|국가/구분||United States(US) Patent 등록|
|미국특허분류(USC)||305/124; 305/125; 305/143; 305/150; 180/009.46; 280/124.11; 280/124.111|
|발명자 / 주소|
|출원인 / 주소|
|대리인 / 주소||
|인용정보||피인용 횟수 : 13 인용 특허 : 25|
A tread assembly has front and rear main idler wheels supported by a frame. A continuous tread is provided around the idler wheels for supporting a cart on a bottom portion of the tread between the front and rear main idler wheels. 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 ...
I claim: 1. A track assembly comprising: a frame; a first pivot assembly operably connected to the frame; a second pivot assembly operably connected to the frame; a shaft linking the first and second pivot assemblies; a first elongated spindle connected to said second pivot assembly to pivot on a first roll axis; a third pivot assembly operably connected to the frame; a second elongated spindle connected to said third pivot assembly to pivot on a second roll axis independent of said first roll axis; a first idler wheel rotatably mounted to said first el...