Is a
Patent attributes
Patent Jurisdiction
Patent Number
Patent Inventor Names
Lyn Rosenboom0
Date of Patent
June 1, 2010
Patent Application Number
11672151
Date Filed
February 7, 2007
Patent Citations Received
Patent Primary Examiner
Patent abstract
A tread assembly has front and rear main idler wheels supported by a frame. An assembly is provided to permit the front idler wheels to pivot laterally as the cart encounters uneven ground, in order to improve weight distribution across the tread and the idler wheels. The rear idler wheel also has an assembly to permit the rear idler wheel to pivot laterally. An alignment feature is incorporated into the front idler wheel assembly to permit adjustment of the alignment of the front idler wheel relative to the rear idler wheel. A tensioning mechanism is provided at the rear idler wheel to maintain the tread in tension. A bogie wheel structure is pivotally connected to the frame and positioned between the front and rear idler wheels.
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