Tread

<body topmargin=0 leftmargin=0 marginheight=0 marginwidth=0> <table cellpadding=0 cellspacing=0 border=0 height="100%"><tr> <td valign="top" width=145 BGCOLOR="#3366CC" TEXT="#080000" background="03cff483.gif"> <bR> </td> <td valign="top" BGCOLOR="#FFFFFF" TEXT="#080000" background="03dff483.gif"> <div> <FONT SIZE="5" COLOR="#6666FF" FACE="Arial" ><B>Steps Tech . Com</B></FONT><FONT SIZE="1" COLOR="#663399" FACE="Times New Roman" >    </FONT> |    <B> </B><FONT SIZE="2" COLOR="#0000BF" FACE="Times New Roman" ><A HREF="index.htm" TARGET="_top" TITLE="Steps Tech . Com"><U><B>home</B></U></A></FONT></div> <div> <A HREF="h_twister.htm" TARGET="_top" TITLE="Hydro twister"><U>Hydro twister</U></A>   |   <A HREF="hy_picts.htm" TARGET="_top" TITLE="Hydro pictures"><U>Hydro pictures</U></A>   |   <A HREF="crawler.htm" TARGET="_top" TITLE="Hydro Crawler"><U>Hydro Crawler</U></A>   |   <B>Tread</B></div> <div> <IMG SRC="03ef0050.gif" border=0 width="496" height="5" ALIGN="BOTTOM" HSPACE="0" VSPACE="0"></div> <div> Tread</div> <bR> <div> <A HREF="main.htm" TARGET="_top" TITLE="Main Area"><U>Main Area</U></A></div> <bR> <bR> <div> I think the animations of the method shows the triangular tread shape solves the problem of tending to stand still on very smooth surfaces as the motion is applied to the tread by the drive spring.</div> <bR> <div>  <img src="HTMLobj-550/aniGif.gif" alt="motion of cleats" border="0" align="bottom" width="500" height="187">  </div> <div> Tread motion imparted to tread and cleats</div> <bR> <bR> <div>  <img src="HTMLobj-552/aniGif.gif" alt="cleat motion" border="0" align="bottom" width="400" height="300">  </div> <div> Cleat motion</div> <bR> <bR> </td> </tr></table></body>