|국가/구분||United States(US) Patent 등록|
|국제특허분류(IPC7판)||F16K-031/143 F16K-031/14 F16K-031/383 F16K-031/36 R16K-031/363|
|미국특허분류(USC)||251/063; 251/063.5; 091/461|
|발명자 / 주소|
|출원인 / 주소|
|인용정보||피인용 횟수 : 7 인용 특허 : 1|
A torque-transmitting mechanism control valve disposed between a hydrostatic source of pressure and a torque-transmitting mechanism is effective to direct fluid pressure to engage the torque-transmitting mechanism when a control pressure is present, effective to retain the valve closed when source pressure is present but control pressure is not, and to retain the valve closed when torque-transmitting apply pressure is present and source pressure is not and control pressure is not present.
The invention claimed is: 1. A control mechanism for a selectively engageable torque-transmitting mechanism comprising: a source of fluid pressure; a control valve mechanism disposed between said source of fluid pressure and said torque-transmitting mechanism; said control valve mechanism defining a first pair of diametrical portions on said valve to hydraulically balance said valve toward an open position when pressure is applied from said source and a control pressure is available at said valve, and a second pair of diametrical portions providing a ba...