|국가/구분||United States(US) Patent 등록|
|미국특허분류(USC)||180/133 ; 60/405 ; 188/5|
|발명자 / 주소|
|출원인 / 주소|
|인용정보||피인용 횟수 : 4 인용 특허 : 1|
An economical and effective auxiliary steering system for a vehicle having a relatively low maximum speed in reverse direction. A ground driven pump having an output when the vehicle is going forward is directed to a diverter valve, which valve is responsive to loss of hydraulic pressure in the main steering circuit to direct the said output to the main steering valve. A single spring loaded check valve isolates the main steering valve under auxiliary steering conditions.
In a log-skidder machine having front and rear frame portions hinged together about a vertical axis for articulated steering, a dozer blade mounted on the front frame and capable of being raised and lowered, and a transmission with gear ratios which permit relatively high speeds in forward and relatively low speeds in reverse; an improved steering system comprising: a normal steering circuit including a reservoir, a main pump, a check valve and a steering valve connected in series; a first conduit connecting said steering valve to said reservoir; a groun...