Abstract: A fluid flow sensitive valve mechanism, including a valve member and a valve positioning device, positioned in a valve chamber between first and second inlet-outlet ports controls opening and closing of a third inlet-outlet port in response to flow of fluid to and from the valve chamber through two or more of the ports. The valve member has a planar platform section and a valve body section extending from one side of the planar platform section. The first inlet-outlet port connects with the valve chamber through a surface engageable by one end of a valve member planar platform section. Fluid flow impingement acts on various valve mechanism surfaces so that when fluid flows from the first port into the valve chamber the valve mechanism is moved to close the third port. It keeps the third port closed so long as there is thereafter no fluid flowing from the second or third port into the valve chamber.

Abstract: A hydraulic pressure actuating system has a master cylinder pivotally mounted to the dash panel in line with the actuator pedal, a remotely mounted hydraulic fluid reservoir assembly positioned at the high point of the system for selfbleeding, and an actuating device actuated by pressurized fluid generated by actuation of the master cylinder. The reservoir assembly uses a fluid flow valve mechanism to control its connection with the fluid passage of the system. Several types of reservoirs are disclosed, including a siphon tube arrangement and various flexible bag arrangements. The reservoir volume is contained in minimum space by using a sidesaddle reservoir arrangement. Indicator arrangements are also disclosed which when actuated indicate actuation and release of the master cylinder in one instance and the amount of fluid in a flexible bag reservoir in another instance.

Abstract: A hydraulic pressure actuating system has a master cylinder pivotally mounted to the dash panel in line with the actuator pedal, a remotely mounted hydraulic fluid reservoir assembly positioned at the high point of the system for self-bleeding, and an actuating device actuated by pressurized fluid generated by actuation of the master cylinder. The reservoir assembly uses a fluid flow valve mechanism to control its connection with the fluid passage means of the system. Several types of reservoirs are disclosed, including a siphon tube arrangement and various flexible bag arrangements. The reservoir volume is contained in minimum space by using a sidesaddle reservoir arrangement. Indicator arrangements are also disclosed which when actuated indicate actuation and release of the master cylinder in one instance and the amount of fluid in a flexible bag reservoir in another instance.

Abstract: A fluid pressure operated friction clutch actuating system for releasing the clutch includes a pressure operator, an actuator mechanism, which mechanism is shown as including a housing having a pair of telescopic pistons acting on a force transmission member and reacting through the actuator housing on an end wall of the clutch housing. The force transmission member has a U-shaped recess through which the clutch output shaft and the bearing retainer pass so that the force transmission member is in force transmitting engagement with the clutch throw out bearing while the system is in its operative position in the clutch housing. The actuator pistons act on the force transmission member when pressurized to move the throw out bearing to release the friction clutch through its belleville spring.