|국가/구분||United States(US) Patent 등록|
|미국특허분류(USC)||60/422 ; 60/423 ; 60/431 ; 91/516|
|발명자 / 주소|
|출원인 / 주소|
|인용정보||피인용 횟수 : 20 인용 특허 : 4|
A lift truck is disclosed with a changeable speed electric motor for driving a single positive displacement pump to supply the power steering and various work handling hydraulic load circuits. Manually actuable selector means are operatively connected with the load circuits and a speed range control means is operatively connected with the selector means for energizing the electric motor in different speed ranges according to the actuation of the selector means. A priority demand valve is connected between the pump and the respective load circuits and sup...
In a work vehicle of the type having at least first and second hydraulic load circuits, said first circuit including a first manually actuable selector member operatively coupled with a first control valve and a first hydraulic motor operatively connected with a first utilization device and adapted to be energized through the first control valve, said second circuit including a second manually actuable selector member operatively coupled with a second control valve, and a second hydraulic motor operatively connected with a second utilization device and a...