|국가/구분||United States(US) Patent 등록|
|미국특허분류(USC)||305/134; 305/138; 180/0095|
|발명자 / 주소|
|출원인 / 주소|
|인용정보||피인용 횟수 : 5 인용 특허 : 23|
A vehicle with a frame connecting a driver wheel, an idler wheel and mid-roller wheels, an endless track belt being tensioned around the driver wheel and the idler wheel and being in contact with the mid-roller wheels on a lower run thereof, the mid-roller wheels being arranged in bogies, including a front bogie having a first pivot axis, a middle bogie and a rear bogie arranged in tandem having a second pivot axis, wherein the first pivot axis and said second pivot axis act as load transfer pivots.
The invention claimed is: 1. An undercarriage for providing traction to a working vehicle on the ground, the working vehicle having a center of gravity that shifts between a first position and a second position spaced apart from the first position along a longitudinal direction of the undercarriage during operation of the working vehicle, the center of gravity of the working vehicle being located at the first position when the working vehicle carries a first load and being located at the second position when the working vehicle carries a second load grea...