Segmented pistons balance fluid pressure to retract the servo pin, eliminating band drag and reducing pump energy consumption.
Load-induced hydrostatic pressure opens the descent control valve, reducing energy consumption and ensuring safe operation during power outages.
A hydraulic circuit uses a switching valve to direct pump flow selectively across multiple actuators while maintaining constant pressure differentials.
A boom drive device reduces hydraulic pump power by blocking oil supply during excavation.
Rearranging pressure-receiving surfaces on the housing end expands area without enlarging outer diameter.
A secondary pump restores elevator operation when the primary unit fails, preventing access blockage by the car.
A hydraulic control arrangement meters predetermined pressure medium volumes into dual chambers to achieve precise actuator positioning.
One-lever hydraulic clutch control system manages steering clutches and track brakes through integrated actuation.
Eliminates the spring rod extending through the regulating piston to reduce structural length and complexity while maintaining precise torque regulation.
A hydraulic spool valve uses a normally closed bypass valve to route fluid around the main throttle.
Segmented arcuate chambers and flexible membranes reduce internal leakage to maintain positional accuracy in rotary hydraulic actuators.
Expanding the servo piston release area counteracts high line pressure forces, eliminating band drag in high gear applications.