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<SEC-DOCUMENT>0000950123-07-008874.txt : 20070619
<SEC-HEADER>0000950123-07-008874.hdr.sgml : 20070619
<ACCEPTANCE-DATETIME>20070619132048
ACCESSION NUMBER:		0000950123-07-008874
CONFORMED SUBMISSION TYPE:	SC 13D
PUBLIC DOCUMENT COUNT:		1
FILED AS OF DATE:		20070619
DATE AS OF CHANGE:		20070619

FILED BY:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			MILLER LLOYD I III
		CENTRAL INDEX KEY:			0000949119

	FILING VALUES:
		FORM TYPE:		SC 13D

	BUSINESS ADDRESS:	
		STREET 1:		4650 GORDON DRIVE
		CITY:			NAPLES
		STATE:			FL
		ZIP:			33940
		BUSINESS PHONE:		9412628577

SUBJECT COMPANY:	

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			GENCOR INDUSTRIES INC
		CENTRAL INDEX KEY:			0000064472
		STANDARD INDUSTRIAL CLASSIFICATION:	CONSTRUCTION MACHINERY & EQUIP [3531]
		IRS NUMBER:				590933147
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			0930

	FILING VALUES:
		FORM TYPE:		SC 13D
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	005-34225
		FILM NUMBER:		07928188

	BUSINESS ADDRESS:	
		STREET 1:		5201 N ORANGE BLOSSOM TRAIL
		CITY:			ORLANDO
		STATE:			FL
		ZIP:			32810
		BUSINESS PHONE:		4072906000

	MAIL ADDRESS:	
		STREET 1:		5201 N ORANGE BLOSSOM
		CITY:			ORANLANDO
		STATE:			FL
		ZIP:			32810

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	MECHTRON INTERNATIONAL CORP
		DATE OF NAME CHANGE:	19880128

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	MECHTRON GENCO CORP
		DATE OF NAME CHANGE:	19720411

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	MECHTRON CORP
		DATE OF NAME CHANGE:	19690909
</SEC-HEADER>
<DOCUMENT>
<TYPE>SC 13D
<SEQUENCE>1
<FILENAME>y36214sc13d.htm
<DESCRIPTION>SCHEDULE 13D
<TEXT>
<HTML>
<HEAD>
<TITLE>sc13d</TITLE>
</HEAD>
<BODY bgcolor="#FFFFFF">
<!-- PAGEBREAK -->
<H5 align="left" style="page-break-before:always">&nbsp;</H5><P>
<DIV style="font-family: 'Times New Roman',Times,serif">


<DIV align="right">
<TABLE style="font-size: 12pt" cellspacing="0" border="0" cellpadding="0" width="15%">
<!-- Begin Table Head -->
<TR valign="bottom">
<TD width="1%">&nbsp;</TD>
<TD width="98%">&nbsp;</TD>
<TD width="1%">&nbsp;</TD>
</TR>
<!-- End Table Head -->
<!-- Begin Table Body -->
<TR valign="bottom">
<TD width="1%" style="border-left: 1px solid #000000; border-top: 1px solid #000000; border-bottom: 1px solid #000000">&nbsp;</TD>
<TD align="center" valign="top" style="border-top: 1px solid #000000; border-bottom: 1px solid #000000"><DIV style="margin-left:0px; text-indent:-0px">OMB APPROVAL</DIV></TD>
<TD width="1%" style="border-right: 1px solid #000000; border-top: 1px solid #000000; border-bottom: 1px solid #000000">&nbsp;</TD>
</TR>
<TR valign="bottom">
<TD width="1%" style="border-left: 1px solid #000000">&nbsp;</TD>
<TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">OMB Number: 3235-0145</DIV></TD>
<TD width="1%" style="border-right: 1px solid #000000">&nbsp;</TD>
</TR>
<TR valign="bottom">
<TD width="1%" style="border-left: 1px solid #000000">&nbsp;</TD>
<TD valign="top" nowrap><DIV style="margin-left:0px; text-indent:-0px">Expires: February&nbsp;28, 2009</DIV>
</TD>
<TD width="1%" style="border-right: 1px solid #000000">&nbsp;</TD>
</TR>
<TR valign="bottom">
<TD width="1%" style="border-left: 1px solid #000000">&nbsp;</TD>
<TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">Estimated average burden hours per response...14.5</DIV></TD>
<TD width="1%" style="border-right: 1px solid #000000">&nbsp;</TD>
</TR>
<TR style="font-size: 1px" valign="bottom">
<TD nowrap align="left" colspan="3" style="border-top: 1px solid #000000">&nbsp;</TD>
</TR>

<!-- End Table Body -->
</TABLE>
</DIV>

<DIV style="width: 100%; border-bottom: 2pt solid black; font-size: 1pt">&nbsp;</DIV>
<DIV style="width: 100%; border-bottom: 1pt solid black; font-size: 1pt">&nbsp;</DIV>


<P align="center" style="font-size: 14pt"><B>UNITED STATES<BR>
SECURITIES AND EXCHANGE COMMISSION</B>

<DIV align="center" style="font-size: 12pt"><B>Washington, D.C. 20549</B>
</DIV>

<P align="center" style="font-size: 18pt"><B>SCHEDULE 13D</B>


<P align="center" style="font-size: 12pt"><B>Under the Securities Exchange Act of 1934<BR>
(Amendment No.&nbsp;&nbsp;)*</B>


<DIV align="center">
<DIV style="font-size: 24pt; margin-top: 16pt; width: 100%; border-bottom: 1px solid #000000">Gencor Industries, Inc.</DIV>
</DIV>


<DIV align="center" style="font-size: 10pt">(Name of Issuer)
</DIV>


<DIV align="center">
<DIV style="font-size: 10pt; margin-top: 16pt; width: 100%; border-bottom: 1px solid #000000">Common Stock</DIV>
</DIV>

<DIV align="center" style="font-size: 10pt">(Title of Class of Securities)
</DIV>


<DIV align="center">
<DIV style="font-size: 10pt; margin-top: 16pt; width: 100%; border-bottom: 1px solid #000000">368678108</DIV>
</DIV>

<DIV align="center" style="font-size: 10pt">(CUSIP Number)
</DIV>


<DIV align="center">
<DIV style="font-size: 10pt; margin-top: 16pt; width: 100%; border-bottom: 1px solid #000000">Lloyd I. Miller, III, 4550 Gordon Drive, Naples, Florida, 34102 (Tel.) (239) 262-8577<BR></DIV>
</DIV>


<DIV align="center" style="font-size: 10pt">(Name, Address and Telephone Number of Person Authorized to<BR>
Receive Notices and Communications)
</DIV>


<DIV align="center">
<DIV style="font-size: 10pt; margin-top: 16pt; width: 100%; border-bottom: 1px solid #000000">June
19, 2007</DIV>
</DIV>

<DIV align="center" style="font-size: 10pt">(Date of Event Which Requires Filing of this Statement)
</DIV>

<P align="left" style="font-size: 10pt">If the filing person has previously filed a statement on Schedule&nbsp;13G to report the acquisition that is the subject of this Schedule&nbsp;13D, and is filing this schedule because of &#167;&#167;240.13d-1(e), 240.13d-1(f) or 240.13d-1(g), check the following box. <FONT face="wingdings" size="2">&#254;</FONT>

<P align="left" style="font-size: 10pt"><B>Note: </B>Schedules filed in paper format shall include a signed original and five copies of the schedule, including all exhibits. See &#167;240.13d-7 for other parties to whom copies are to be sent.

<P align="left" style="font-size: 10pt">* The remainder of this cover page shall be filled out for a reporting person&#146;s initial filing on this form with respect to the subject class of securities, and for any subsequent amendment containing information which would alter disclosures provided in a prior cover page.

<P align="left" style="font-size: 10pt">The information required on the remainder of this cover page shall not be deemed to be &#147;filed&#148; for the purpose of Section 18 of the Securities Exchange Act of 1934 (&#147;Act&#148;) or otherwise subject to the liabilities of that section of the Act but shall be subject to all other provisions of the Act (however, see the Notes).


<DIV style="width: 100%; border-bottom: 1pt solid black; margin-top: 10pt; font-size: 1pt">&nbsp;</DIV>
<DIV style="width: 100%; border-bottom: 2pt solid black; font-size: 1pt">&nbsp;</DIV>

<P align="center" style="font-size: 10pt">
</DIV>



<!-- PAGEBREAK -->
<P><HR noshade><P>
<H5 align="left" style="page-break-before:always">&nbsp;</H5><P>

<DIV style="font-family: 'Times New Roman',Times,serif">

<DIV align="center">
<TABLE style="font-size: 10pt" cellspacing="0" border="0" cellpadding="0" width="100%">
<!-- Begin Table Head -->
<TR valign="bottom">
<TD width="1%">&nbsp;</TD>
<TD width="1%">&nbsp;</TD>
<TD width="20%">&nbsp;</TD>
<TD width="55%">&nbsp;</TD>
<TD width="1%">&nbsp;</TD>
<TD width="1%">&nbsp;</TD>
<TD width="9%">&nbsp;</TD>
<TD width="1%">&nbsp;</TD>
<TD width="1%">&nbsp;</TD>
<TD width="1%">&nbsp;</TD>
<TD width="9%">&nbsp;</TD>
</TR>
<!-- End Table Head -->
<!-- Begin Table Body -->


<TR valign="bottom">
<TD valign="top" nowrap><DIV style="margin-left:0px; text-indent:-0px">CUSIP No.</DIV></TD>
<TD>&nbsp;</TD>
<TD align="center" valign="top"><DIV style="border: 1px solid #000000">368678108&nbsp;</DIV></TD>
<TD>&nbsp;</TD>
<TD align="left" valign="top">Page</TD>
<TD>&nbsp;</TD>
<TD align="center" valign="top"><DIV style="border: 1px solid #000000">2&nbsp;</DIV></TD>
<TD>&nbsp;</TD>
<TD align="left" valign="top">of&nbsp;</TD>
<TD>&nbsp;</TD>
<TD align="center" valign="top"><DIV style="border: 1px solid #000000">6&nbsp;</DIV></TD>
</TR>
<!-- End Table Body -->
</TABLE>
</DIV>

<P>&nbsp;<DIV style="width: 100%; border: 1px solid black"><DIV align="center">

<TABLE style="font-size: 10pt" cellspacing="0" border="0" cellpadding="1" width="100%">
<!-- Begin Table Head --><TR style="font-size: 1px">
<TD width="5%">&nbsp;</TD>
<TD width="1%" style="border-left: 1px solid #000000">&nbsp;</TD>
<TD width="5%">&nbsp;</TD>
<TD width="5%">&nbsp;</TD>
<TD width="1%">&nbsp;</TD>
<TD width="83%">&nbsp;</TD>
</TR>

<!-- End Table Head -->
<!-- Begin Table Body -->
<TR valign="bottom">
<TD valign="middle" align="center" rowspan="4"><FONT style="font-size: 18pt"><B>1</B></FONT></TD>
<TD style="border-left: 1px solid #000000">&nbsp;</TD>
<TD colspan="4" align="left">NAMES OF REPORTING PERSONS:<BR>
<BR>
Lloyd I. Miller, III</TD>
</TR>
<TR valign="bottom"> <TD style="border-left: 1px solid #000000">&nbsp;</TD> <TD colspan="4" align="left">&nbsp;</TD> </TR> <TR valign="bottom">
<TD style="border-left: 1px solid #000000">&nbsp;</TD>
<TD colspan="4" align="left">I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS (ENTITIES ONLY):<BR>&nbsp;</TD>
</TR>
<TR valign="bottom">
<TD style="border-left: 1px solid #000000">&nbsp;</TD>
<TD colspan="4" align="left">###-##-####</TD>
</TR>

<TR style="font-size: 1px">
<TD style="border-top: 1px solid #000000">&nbsp;</TD>
<TD style="border-left: 1px solid #000000; border-top: 1px solid #000000">&nbsp;</TD>
<TD colspan="4" align="left" style="border-top: 1px solid #000000">&nbsp;</TD>
</TR>

<TR valign="bottom">
<TD valign="middle" align="center" rowspan="3"><FONT style="font-size: 18pt"><B>2</B></FONT></TD>
<TD style="border-left: 1px solid #000000">&nbsp;</TD>
<TD colspan="4" align="left">CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP (SEE INSTRUCTIONS):<BR><BR></TD>
</TR>
<TR valign="bottom">
<TD style="border-left: 1px solid #000000">&nbsp;</TD>
<TD colspan="4" align="left">(a)&nbsp;&nbsp;&nbsp;<FONT face="wingdings" size="2">&#111;</FONT>&nbsp;</TD>
</TR>

<TR valign="bottom">
<TD style="border-left: 1px solid #000000">&nbsp;</TD>
<TD colspan="4" align="left">(b)&nbsp;&nbsp;&nbsp;<FONT face="wingdings" size="2">&#111;</FONT>&nbsp;</TD>
</TR>
<TR style="font-size: 1px">
<TD style="border-top: 1px solid #000000">&nbsp;</TD>
<TD style="border-left: 1px solid #000000; border-top: 1px solid #000000">&nbsp;</TD>
<TD colspan="4" align="left" style="border-top: 1px solid #000000">&nbsp;</TD>
</TR>

<TR valign="bottom">
<TD valign="middle" align="center" rowspan="3"><FONT style="font-size: 18pt"><B>3</B></FONT></TD>
<TD style="border-left: 1px solid #000000">&nbsp;</TD>
<TD colspan="4" align="left">SEC USE ONLY:</TD>
</TR>
<TR valign="bottom">
<TD style="border-left: 1px solid #000000">&nbsp;</TD>
<TD colspan="4" align="left">&nbsp;</TD>
</TR>
<TR valign="bottom">
<TD style="border-left: 1px solid #000000">&nbsp;</TD>
<TD colspan="4" align="left">&nbsp;</TD>
</TR>

<TR style="font-size: 1px">
<TD style="border-top: 1px solid #000000">&nbsp;</TD>
<TD style="border-left: 1px solid #000000; border-top: 1px solid #000000">&nbsp;</TD>
<TD colspan="4" align="left" style="border-top: 1px solid #000000">&nbsp;</TD>
</TR>

<TR valign="bottom">
<TD valign="middle" align="center" rowspan="3"><FONT style="font-size: 18pt"><B>4</B></FONT></TD>
<TD style="border-left: 1px solid #000000">&nbsp;</TD>
<TD colspan="4" align="left">SOURCE OF FUNDS (SEE INSTRUCTIONS):</TD>
</TR>
<TR valign="bottom">
<TD style="border-left: 1px solid #000000">&nbsp;</TD>
<TD colspan="11" align="left">&nbsp;</TD>
</TR>
<TR valign="bottom">
<TD style="border-left: 1px solid #000000">&nbsp;</TD>
<TD colspan="11" align="left">PF-AF-OO</TD>
</TR>

<TR style="font-size: 1px">
<TD style="border-top: 1px solid #000000">&nbsp;</TD>
<TD style="border-left: 1px solid #000000; border-top: 1px solid #000000">&nbsp;</TD>
<TD colspan="4" align="left" style="border-top: 1px solid #000000">&nbsp;</TD>
</TR>

<TR valign="bottom">
<TD valign="middle" align="center" rowspan="3"><FONT style="font-size: 18pt"><B>5</B></FONT></TD>
<TD style="border-left: 1px solid #000000">&nbsp;</TD>
<TD colspan="4" align="left">CHECK IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO ITEMS 2(d) OR 2(e):</TD>
</TR>
<TR valign="bottom">
<TD style="border-left: 1px solid #000000">&nbsp;</TD>
<TD colspan="4" align="left">&nbsp;</TD>
</TR>
<TR valign="bottom">
<TD style="border-left: 1px solid #000000">&nbsp;</TD>
<TD colspan="4" align="left"><FONT face="wingdings" size="2">&#111;</FONT></TD>
</TR>

<TR style="font-size: 1px">
<TD style="border-top: 1px solid #000000">&nbsp;</TD>
<TD style="border-left: 1px solid #000000; border-top: 1px solid #000000">&nbsp;</TD>
<TD colspan="4" align="left" style="border-top: 1px solid #000000">&nbsp;</TD>
</TR>

<TR valign="bottom">
<TD valign="middle" align="center" rowspan="3"><FONT style="font-size: 18pt"><B>6</B></FONT></TD>
<TD style="border-left: 1px solid #000000">&nbsp;</TD>
<TD colspan="4" align="left">CITIZENSHIP OR PLACE OF ORGANIZATION:</TD>
</TR>
<TR valign="bottom">
<TD style="border-left: 1px solid #000000">&nbsp;</TD>
<TD colspan="4" align="left">&nbsp;</TD>
</TR>
<TR valign="bottom">
<TD style="border-left: 1px solid #000000">&nbsp;</TD>
<TD colspan="4" align="left">United States
</TD>
</TR>

<TR style="font-size: 1px">
<TD colspan="3" align="left" style="border-top: 1px solid #000000">&nbsp;</TD>
<TD align="left" style="border-top: 1px solid #000000; border-left: 1px solid #000000; border-right: 1px solid #000000">&nbsp;</TD>
<TD align="left" style="border-top: 1px solid #000000">&nbsp;</TD>
<TD align="left" style="border-top: 1px solid #000000">&nbsp;</TD>
</TR>

<TR valign="bottom">
<TD align="center" colspan="3">&nbsp;</TD>
<TD valign="middle" align="center" rowspan="3" style="border-left: 1px solid #000000; border-right: 1px solid #000000"><FONT style="font-size: 18pt"><B>7</B></FONT></TD>
<TD>&nbsp;</TD>
<TD align="left">SOLE VOTING POWER:</TD>
</TR>
<TR valign="bottom">
<TD align="center" colspan="3">&nbsp;</TD>
<TD>&nbsp;</TD>
<TD>&nbsp;</TD>
</TR>
<TR valign="bottom">
<TD align="center" colspan="3">NUMBER OF</TD>
<TD>&nbsp;</TD>
<TD align="left">156,045</TD>
</TR>

<TR style="font-size: 1px">
<TD colspan="3">&nbsp;</TD>
<TD align="left" style="border-top: 1px solid #000000; border-left: 1px solid #000000; border-right: 1px solid #000000">&nbsp;</TD>
<TD align="left" style="border-top: 1px solid #000000">&nbsp;</TD>
<TD align="left" style="border-top: 1px solid #000000">&nbsp;</TD>
</TR>

<TR valign="bottom">
<TD align="center" colspan="3">SHARES</TD>
<TD valign="middle" align="center" rowspan="3" style="border-left: 1px solid #000000; border-right: 1px solid #000000"><FONT style="font-size: 18pt"><B>8</B></FONT></TD>
<TD>&nbsp;</TD>
<TD align="left">SHARED VOTING POWER:</TD>
</TR>
<TR valign="bottom">
<TD align="center" colspan="3">BENEFICIALLY</TD>
<TD>&nbsp;</TD>
<TD>&nbsp;</TD>
</TR>
<TR valign="bottom">
<TD align="center" colspan="3">OWNED BY</TD>
<TD>&nbsp;</TD>
<TD>755,021</TD>
</TR>

<TR style="font-size: 1px">
<TD colspan="3">&nbsp;</TD>
<TD align="left" style="border-top: 1px solid #000000; border-left: 1px solid #000000; border-right: 1px solid #000000">&nbsp;</TD>
<TD align="left" style="border-top: 1px solid #000000">&nbsp;</TD>
<TD align="left" style="border-top: 1px solid #000000">&nbsp;</TD>
</TR>


<TR valign="bottom">
<TD align="center" colspan="3">EACH</TD>
<TD valign="middle" align="center" rowspan="3" style="border-left: 1px solid #000000; border-right: 1px solid #000000"><FONT style="font-size: 18pt"><B>9</B></FONT></TD>
<TD>&nbsp;</TD>
<TD align="left">SOLE DISPOSITIVE POWER:</TD>
</TR>
<TR valign="bottom">
<TD align="center" colspan="3">REPORTING</TD>
<TD>&nbsp;</TD>
<TD>&nbsp;</TD>
</TR>
<TR valign="bottom">
<TD align="center" colspan="3">PERSON</TD>
<TD>&nbsp;</TD>
<TD align="left">156,045</TD>
</TR>
<TR style="font-size: 1px">
<TD colspan="3">&nbsp;</TD>
<TD align="left" style="border-top: 1px solid #000000; border-left: 1px solid #000000; border-right: 1px solid #000000">&nbsp;</TD>
<TD align="left" style="border-top: 1px solid #000000">&nbsp;</TD>
<TD align="left" style="border-top: 1px solid #000000">&nbsp;</TD>
</TR>

<TR valign="bottom">
<TD align="center" colspan="3">WITH</TD>
<TD valign="middle" align="center" rowspan="3" style="border-left: 1px solid #000000; border-right: 1px solid #000000"><FONT style="font-size: 18pt"><B>10</B></FONT></TD>
<TD>&nbsp;</TD>
<TD align="left">SHARED DISPOSITIVE POWER:</TD>
</TR>
<TR valign="bottom">
<TD align="center" colspan="3">&nbsp;</TD>
<TD>&nbsp;</TD>
<TD>&nbsp;</TD>
</TR>
<TR valign="bottom">
<TD align="center" colspan="3">&nbsp;</TD>
<TD>&nbsp;</TD>
<TD align="left">755,021</TD>
</TR>
<TR style="font-size: 1px">
<TD style="border-top: 1px solid #000000">&nbsp;</TD>
<TD style="border-left: 1px solid #000000; border-top: 1px solid #000000">&nbsp;</TD>
<TD colspan="4" align="left" style="border-top: 1px solid #000000">&nbsp;</TD>
</TR>

<TR valign="bottom">
<TD valign="middle" align="center" rowspan="3"><FONT style="font-size: 18pt"><B>11</B></FONT></TD>
<TD style="border-left: 1px solid #000000">&nbsp;</TD>
<TD colspan="4" align="left">AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON:</TD>
</TR>
<TR valign="bottom">
<TD style="border-left: 1px solid #000000">&nbsp;</TD>
<TD colspan="4" align="left">&nbsp;</TD>
</TR>
<TR valign="bottom">
<TD style="border-left: 1px solid #000000">&nbsp;</TD>
<TD colspan="4" align="left">911,066</TD>
</TR>

<TR style="font-size: 1px">
<TD style="border-top: 1px solid #000000">&nbsp;</TD>
<TD style="border-left: 1px solid #000000; border-top: 1px solid #000000">&nbsp;</TD>
<TD colspan="4" align="left" style="border-top: 1px solid #000000">&nbsp;</TD>
</TR>

<TR valign="bottom">
<TD valign="middle" align="center" rowspan="3"><FONT style="font-size: 18pt"><B>12</B></FONT></TD>
<TD style="border-left: 1px solid #000000">&nbsp;</TD>
<TD colspan="4" align="left">CHECK IF THE AGGREGATE AMOUNT IN ROW (11)&nbsp;EXCLUDES CERTAIN SHARES (SEE INSTRUCTIONS):</TD>
</TR>
<TR valign="bottom">
<TD style="border-left: 1px solid #000000">&nbsp;</TD>
<TD colspan="4" align="left">&nbsp;</TD>
</TR>
<TR valign="bottom">
<TD style="border-left: 1px solid #000000">&nbsp;</TD>
<TD colspan="4" align="left"><FONT face="wingdings" size="2">&#111;</FONT>
</TD>
</TR>

<TR style="font-size: 1px">
<TD style="border-top: 1px solid #000000">&nbsp;</TD>
<TD style="border-left: 1px solid #000000; border-top: 1px solid #000000">&nbsp;</TD>
<TD colspan="4" align="left" style="border-top: 1px solid #000000">&nbsp;</TD>
</TR>

<TR valign="bottom">
<TD valign="middle" align="center" rowspan="3"><FONT style="font-size: 18pt"><B>13</B></FONT></TD>
<TD style="border-left: 1px solid #000000">&nbsp;</TD>
<TD colspan="4" align="left">PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11):</TD>
</TR>
<TR valign="bottom">
<TD style="border-left: 1px solid #000000">&nbsp;</TD>
<TD colspan="4" align="left">&nbsp;</TD>
</TR>
<TR valign="bottom">
<TD style="border-left: 1px solid #000000">&nbsp;</TD>
<TD colspan="4" align="left">11.4&#37;</TD>
</TR>

<TR style="font-size: 1px">
<TD style="border-top: 1px solid #000000">&nbsp;</TD>
<TD style="border-left: 1px solid #000000; border-top: 1px solid #000000">&nbsp;</TD>
<TD colspan="4" align="left" style="border-top: 1px solid #000000">&nbsp;</TD>
</TR>

<TR valign="bottom">
<TD valign="middle" align="center" rowspan="3"><FONT style="font-size: 18pt"><B>14</B></FONT></TD>
<TD style="border-left: 1px solid #000000">&nbsp;</TD>
<TD colspan="4" align="left">TYPE OF REPORTING PERSON (SEE INSTRUCTIONS):</TD>
</TR>
<TR valign="bottom">
<TD style="border-left: 1px solid #000000">&nbsp;</TD>
<TD colspan="4" align="left">&nbsp;</TD>
</TR>
<TR valign="bottom">
<TD style="border-left: 1px solid #000000">&nbsp;</TD>
<TD colspan="4" align="left">IA-IN-OO</TD>
</TR>
<!-- End Table Body --></TABLE>
</DIV>
</DIV>

<DIV style="font-size: 10pt; margin-top: 3pt">
</DIV>

<DIV style="font-size: 10pt; margin-top: 3pt">
</DIV>

<DIV style="font-size: 10pt; margin-top: 3pt">
</DIV>

<DIV style="font-size: 10pt; margin-top: 3pt">
</DIV>


<P align="center" style="font-size: 10pt">



</DIV>

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<DIV align="right" style="font-size: 10pt; margin-top: 12pt">Page 3 of 6
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<DIV align="center" style="font-size: 10pt; margin-top: 18pt"><B>ORIGINAL REPORT ON SCHEDULE 13D</B>
</DIV>


<DIV align="left" style="font-size: 10pt; margin-top: 12pt"><B>Item&nbsp;1. </B><U><B>Security and Issuer</B></U>
</DIV>


<DIV align="left" style="font-size: 10pt; margin-top: 6pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;This statement relates to the Common Stock, par value $0.10 per share (the &#147;Shares&#148;) of Gencor
Industries, Inc. (the &#147;Company&#148;). The Company has its principal executive offices at 5201 North
Orange Blossom Trail, Orlando, Florida 32810.
</DIV>

<DIV align="left" style="font-size: 10pt; margin-top: 12pt"><B>Item&nbsp;2. </B><U><B>Identity and Background</B></U>
</DIV>


<DIV align="left" style="font-size: 10pt; margin-top: 6pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;This statement is filed by Lloyd I. Miller, III (&#147;Miller&#148; or the &#147;Reporting
Person&#148;). Miller&#146;s principal business address is 4550 Gordon Drive, Naples, Florida 34102.
Miller&#146;s principal occupation is investing assets held by or on behalf of his family. During the
past five years, Miller has not been convicted in a criminal proceeding (excluding traffic
violations or similar misdemeanors) and has not been a party to civil proceedings of a judicial or
administrative body of competent jurisdiction as a result of which Miller was or is subject to a
judgment, decree or final order enjoining future violations of, or prohibiting or mandating
activities subject to, federal or state securities laws or finding any violation with respect to
such laws. Miller is a United States citizen.
</DIV>

<DIV align="left" style="font-size: 10pt; margin-top: 12pt"><B>Item&nbsp;3. </B><U><B>Source and Amount of Funds or Other Considerations</B></U>
</DIV>


<DIV align="left" style="font-size: 10pt; margin-top: 6pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Miller is the investment advisor to the trustee of Trust A-4 and Trust C (the
&#147;<U>Trusts</U>&#148;). The Trusts were created pursuant to an Amended and Restated Trust Agreement,
dated September&nbsp;20, 1983 (the &#147;Trust Agreement&#148;). Pursuant to a Declaratory Judgment, signed by
the Honorable Wayne F. Wilke for the Court of Common Pleas, Probate Division, Hamilton County,
Ohio, on October&nbsp;27, 1992, Trust A was split into four separate
trusts one of which was Trust
<FONT style="white-space: nowrap">A-4.</font>
All of the Shares purchased by Trust
<FONT style="white-space: nowrap">A-4</font> were purchased by funds
generated and held by Trust
<FONT style="white-space: nowrap">A-4.</font>
The aggregate purchase price for the Shares in Trust
<FONT style="white-space: nowrap">A-4</font> was $7,175,541.18. All of the Shares
purchased by Trust C were purchased by funds generated and held by Trust C. The aggregate purchase
price for the Shares in Trust C was $178,560.00.
</DIV>

<DIV align="left" style="font-size: 10pt; margin-top: 6pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Miller is the manager of Milfam LLC, an Ohio limited liability company established pursuant to
the Operating Agreement of Milfam LLC, dated as of December&nbsp;10, 1996. Milfam LLC is the general
partner of Milfam II L.P., a Georgia limited partnership established pursuant to the Partnership
Agreement for Milfam II L.P., dated December&nbsp;11, 1996. All of the Shares Miller is deemed to
beneficially own as the manager of the general partner of Milfam II L.P. were purchased with money
contributed to Milfam II L.P. by its partners, or money generated and held by Milfam II L.P. The
aggregate purchase price for the Shares in Milfam II L.P. was $1,386,137.30.
</DIV>

<DIV align="left" style="font-size: 10pt; margin-top: 6pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Miller is the custodian to a certain account created pursuant to the Florida Uniform Gift to
Minors Act for Alexandra Miller (&#147;Alex UGMA&#148;). All of the Shares Miller is deemed to beneficially
own in the Alex UGMA were purchased with money held by the Alex UGMA. The aggregate purchase
price for the Shares in the Alex UGMA was $11,550.00.
</DIV>

<DIV align="left" style="font-size: 10pt; margin-top: 6pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;All of the Shares held by Miller on his own behalf, were purchased with personal funds
generated and held by Miller. The purchase price for the Shares purchased by Mr.&nbsp;Miller, on his
own behalf was $97,790.10.
</DIV>

</DIV>
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<DIV align="left" style="font-size: 10pt; margin-top: 6pt"><B>Item&nbsp;4. <U>Purpose of the Transaction</U></B>
</DIV>


<DIV align="left" style="font-size: 10pt; margin-top: 6pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;The Shares covered by this Schedule&nbsp;13D were acquired by the Reporting Person for
investment purposes in the ordinary course of his business as an investor. The Reporting Person
filing this report now believes that it would be in his best interest, and those of other
stockholders, to attempt to influence the governance of the Company.
</DIV>

<DIV align="left" style="font-size: 10pt; margin-top: 6pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;The Reporting Person filing this report is examining all of his options with respect to the
possibility of taking actions that he believes will enhance governance, oversight and shareholder
value. Such actions could include (1)&nbsp;nominating candidates for director of the Board of Directors
of the Company, and (2)&nbsp;encouraging, participating in or leading efforts to include individuals on
the board of directors who would be independent of management and would represent the interests of
the Company and the holders of the common stock.
</DIV>

<DIV align="left" style="font-size: 10pt; margin-top: 6pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Except as described above in this Item&nbsp;4 and herein, the Reporting Person does not have any
specific plans or proposals that relate to or would result in any of the actions or events
specified in clauses (a)&nbsp;through (j)&nbsp;of Item&nbsp;4 of Schedule&nbsp;13D. The Reporting Person reserves the
right to change plans and take any and all actions that the Reporting Person may deem appropriate
to maximize the value of his investments, including, among other things, purchasing or otherwise
acquiring additional securities of the Company, selling or otherwise disposing of any securities of
the Company beneficially owned by him, in each case in the open market or in privately negotiated
transactions or formulating other plans or proposals regarding the Company or its securities to the
extent deemed advisable by the Reporting Person in light of his general investment policies, market
conditions, subsequent developments affecting the Company and the general business and future
prospects of the Company. The Reporting Person may take any other action with respect to the
Company or any of the Company&#146;s debt or equity securities in any manner permitted by applicable
law.
</DIV>

<DIV align="left" style="font-size: 10pt; margin-top: 12pt"><B>Item&nbsp;5</B>. <U><B>Interest in Securities of the Issuer</B></U>
</DIV>


<DIV align="left" style="font-size: 10pt; margin-top: 6pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(a)&nbsp;Miller may be deemed to beneficially own 911,066 Shares (11.4% of the outstanding Shares,
based on 7,967,372 Shares outstanding pursuant to the Company&#146;s Quarterly Report on Form 10-Q filed
on May&nbsp;15, 2007). As of the date hereof, 735,821 of such beneficially owned Shares are owned of
record by Trust A-4; 19,200 of such beneficially owned Shares are owned of record by Trust C; 1,100
of such beneficially owned Shares are owned of record by Alex UGMA; 144,145 of such beneficially
owned Shares are owned of record by Milfam II L.P; and 10,800 of such beneficially owned Shares are
owned of record by Miller directly.
</DIV>

<DIV align="left" style="font-size: 10pt; margin-top: 6pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(b)&nbsp;Miller may be deemed to have shared voting and dispositive power
for all such shares held of record by Trust A-4 and Trust C. Miller
may be deemed to have sole voting and dispositive power for all such shares held of record by Alex UGMA, Milfam II L.P, and Miller directly.
</DIV>
</DIV>
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<DIV align="left" style="font-size: 10pt; margin-top: 6pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(c)&nbsp;The following table details the purchase of Shares effected by Miller during the past 60
days:
</DIV>


<div align="center" style="margin-top: 10pt">MILFAM II L.P.
</div>

<DIV align="center">
<TABLE style="font-size: 10pt" cellspacing="0" border="0" cellpadding="0" width="100%">
<!-- Begin Table Head --><TR valign="bottom">
    <TD width="30%">&nbsp;</TD>
    <TD width="5%">&nbsp;</TD>
    <TD width="30%">&nbsp;</TD>
    <TD width="5%">&nbsp;</TD>
    <TD width="30%">&nbsp;</TD>
</TR>

<TR style="font-size: 8pt" valign="bottom">
    <TD nowrap align="left">Date of Transaction</TD>
    <TD>&nbsp;</TD>
    <TD nowrap align="left">Number of Shares Purchased</TD>
    <TD>&nbsp;</TD>
    <TD nowrap align="left">Price Per Share</TD>
</TR>

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<TR style="font-size: 1px">
    <TD colspan="5" align="left" style="border-top: 1px solid #000000">&nbsp;</TD>
</TR>
<TR valign="bottom" style="background: #cceeff">
    <TD><DIV style="margin-left:15px; text-indent:-15px">April&nbsp;30, 2007</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">560</TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">$9.05</TD>
</TR>
<TR valign="bottom">
    <TD><DIV style="margin-left:15px; text-indent:-15px">May&nbsp;3, 2007</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">1040</TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">$9.05</TD>
</TR>
<TR valign="bottom" style="background: #cceeff">
    <TD><DIV style="margin-left:15px; text-indent:-15px">May&nbsp;4, 2007</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">100</TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">$9.05</TD>
</TR>
<TR valign="bottom">
    <TD><DIV style="margin-left:15px; text-indent:-15px">May&nbsp;8, 2007</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">500</TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">$9.05</TD>
</TR>
<TR valign="bottom" style="background: #cceeff">
    <TD><DIV style="margin-left:15px; text-indent:-15px">May&nbsp;15, 2007</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">3,750</TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">$9.50</TD>
</TR>
<TR valign="bottom">
    <TD><DIV style="margin-left:15px; text-indent:-15px">May&nbsp;23, 2007</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">40,000</TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">$9.00</TD>
</TR>
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</DIV>



<div align="center" style="margin-top: 10pt">LLOYD I. MILLER, III
</div>

<DIV align="center">
<TABLE style="font-size: 10pt" cellspacing="0" border="0" cellpadding="0" width="100%">
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    <TD width="30%">&nbsp;</TD>
    <TD width="5%">&nbsp;</TD>
    <TD width="30%">&nbsp;</TD>
    <TD width="5%">&nbsp;</TD>
    <TD width="30%">&nbsp;</TD>
</TR>

<TR style="font-size: 8pt" valign="bottom">
    <TD nowrap align="left">Date of Transaction</TD>
    <TD>&nbsp;</TD>
    <TD nowrap align="left">Number of Shares Purchased</TD>
    <TD>&nbsp;</TD>
    <TD nowrap align="left">Price Per Share</TD>
</TR>

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    <TD colspan="5" align="left" style="border-top: 1px solid #000000">&nbsp;</TD>
</TR>
<TR valign="bottom">
    <TD><DIV style="margin-left:15px; text-indent:-15px">May&nbsp;25, 2007</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">3,800</TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">$9.00</TD>
</TR>
<TR valign="bottom">
    <TD><DIV style="margin-left:15px; text-indent:-15px">June&nbsp;15, 2007</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">500</TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">$9.00</TD>
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</DIV>


<DIV align="left" style="font-size: 10pt; margin-top: 6pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(d)&nbsp;Other than Shares held directly by Mr.&nbsp;Miller, persons other than Miller have
the right to receive and the power to direct the receipt of dividends from, or the proceeds from the sale of,
the reported securities.
</DIV>

<DIV align="left" style="font-size: 10pt; margin-top: 6pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(e)&nbsp;Not Applicable.
</DIV>

<DIV align="left" style="font-size: 10pt; margin-top: 12pt"><B>Item&nbsp;6. Contracts, Arrangements, Understandings or Relationships With Respect to Securities of the Issuer</B>
</DIV>


<DIV align="left" style="font-size: 10pt; margin-top: 6pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Not Applicable.
</DIV>


<DIV align="left" style="font-size: 10pt; margin-top: 12pt"><B>Item&nbsp;7. Materials to be Filed as Exhibits:</B>
</DIV>


<DIV align="left" style="font-size: 10pt; margin-top: 6pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Not Applicable.
</DIV>

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<DIV align="left" style="font-size: 10pt; margin-top: 6pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;After reasonable inquiry and to the best of my knowledge and belief, I certify that the
information set forth in this statement is true, complete and correct.
</DIV>

<DIV align="left" style="font-size: 10pt; margin-top: 6pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Dated:&nbsp;&nbsp;&nbsp;June&nbsp;19, 2007
</DIV>

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    <TD valign="top" align="left">&nbsp;</TD>
    <TD colspan="3" align="left">&nbsp;</TD>
    <TD>&nbsp;</TD>
</TR><TR>
    <TD align="left">&nbsp;</TD>
    <TD valign="top">By:&nbsp;&nbsp;</TD>
    <TD colspan="2" style="border-bottom: 1px solid #000000" align="left">                      /s/ Lloyd I. Miller, III
&nbsp;</TD>
    <TD>&nbsp;</TD>
</TR><TR>
    <TD align="left">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD colspan="2" align="left">Lloyd I. Miller, III&nbsp;</TD>
    <TD>&nbsp;</TD>
</TR><TR>
    <TD align="left">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD colspan="2" align="left">&nbsp;</TD>
    <TD>&nbsp;</TD>
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    <TD colspan="5">&nbsp;</TD>
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