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David J Tengler, 39N8W30024 Woodcrest Dr, Waukesha, WI 53188

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N8W30024 Woodcrest Dr, Waukesha, WI 53188    262-7193092   

2415 Madison St, Waukesha, WI 53188   

S16W32390 Moraine Ct, Delafield, WI 53018   

Brookfield, WI   

Madison, WI   

Houston, TX   

S16W32390 Moraine Ct, Delafield, WI 53018   

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Us Patents

Ladder Accessory

US Patent:
8074769, Dec 13, 2011
Filed:
Aug 30, 2007
Appl. No.:
11/847926
Inventors:
Michael W. Sracic - Madison WI, US
Daniel J. Goesch - Colgate WI, US
Logan J. Hamel - Northglenn CO, US
Elliot J. Haag - Madison WI, US
David J. Tengler - Delafield WI, US
Assignee:
Wisconsin Alumni Research Foundation - Madison WI
International Classification:
E06C 7/16
US Classification:
182103, 182101, 182102, 182115, 182129
Abstract:
A device is provided for aiding a user in transporting a load up and down a ladder assembly. The ladder assembly includes a fly ladder having slidably connected to a base ladder. Each ladder includes first and second spaced rails interconnected by a plurality of spaced rungs. The device has a frame assembly including a first subframe positionable adjacent the first rail of the base ladder and a second subframe positionable adjacent the second rail of the base ladder. First and second base ladder guides are operatively connected to each subframe and define tracks for receiving the rails of the base ladder therebetween. First and second fly ladder guides are operatively connected to the subframes and defines tracks for receiving the rails of the fly ladder therebetween.

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