|국가/구분||United States(US) Patent 등록|
|국제특허분류(IPC7판)||B60K-017/356 B60K-001/00 B60K-007/00|
|미국특허분류(USC)||180/242 ; 180/655 ; 180/308|
|발명자 / 주소|
|출원인 / 주소|
|인용정보||피인용 횟수 : 32 인용 특허 : 1|
A selectable multi-wheel drive system for a mining machine has an electrical motor directly driving a wheel and driving a hydraulic pump through a clutching mechanism. Another wheel is connected to be driven by a hydraulic motor connected through a hydraulic circuit to be driven by the hydraulic pump. The hydraulic pump is selectively connected to the hydraulic motor so that one wheel or both wheels may be driven. The hydraulic circuit is controlled so that when in a one wheel drive condition the hydraulic motor is placed in a free-wheeling mode and no l...
A controlled traction vehicle having two sides and four tractive wheels with a first and second wheel adjacent one side and a third and fourth wheel adjacent the other side and a propulsion means connected to the wheels for selectively driving the wheels, said propulsion means comprising: a first hydraulic pump; a first electrical motor connected to drive the first wheel; a first clutching means connected to the first electrical motor and the first hydraulic pump for selectively connecting said first electrical motor to drive said first pump; a hydraulic...