|국가/구분||United States(US) Patent 등록|
|미국특허분류(USC)||180/936 ; 180/15 ; 180/2405 ; 180/2411|
|우선권정보||NL-0011134 (1976-10-08); NL-0000073 (1977-01-06)|
|발명자 / 주소|
|인용정보||피인용 횟수 : 13 인용 특허 : 0|
An agricultural type tractor with lifting devices on the front, rear and both sides for agricultural implements. Each pair of rear drivable wheels which are in tandem pivot about a common axle and each pivotable pair of such wheels is driven by a separate hydraulic motor, with each motor, however, connected to a common control whereby the velocity of the wheels on one side can be increased while the velocity of those on the other is decreased for steering around curves and the like. The arrangement also provides a hydraulically lockable differential to a...
A tractor comprising a frame, a prime mover carried by said frame, at least one drivable wheel which engages under all operative conditions the underlying ground for exerting tractive forces thereon for causing the tractor to move over the ground, said drivable wheel having an axle mounted on said frame which is connectable to said prime mover, at least one supporting element outboard of said wheel, link means connecting said supporting element to said frame whereby it is movable vertically relative to said wheel, said wheel and said supporting element e...