Fluid power transmission system
AssigneeSperry Rand Corporation
InventorMacKellar K. Graham
Life of this patent
Estimating the term…
Abstract
A fluid reservoir for hydraulic power systems comprises a tank divided into a liquid compartment and an air compartment by a flexible diaphragm so that the liquid will be pressurized by compressed air in the air compartment. The tank is supported in a stationary frame upon horizontal pivots and a balancing spring. The liquid inlet and outlet connections pass through the pivots. An indicator is provided for showing the vertical position of the tank relative to the frame on the balancing spring and thus indicating the amount of liquid in the tank.
Claims1
A reservoir for hydraulic fluid power systems comprising a rigid container having an open mouth, a diaphragm of impermeable flexible sheet material closing the mouth of the container and dividing the container into a liquid compartment and a gas compartment, a cover having a gas inlet closing the mouth and diaphragm, a frame supporting the container on pivots for movement relative thereto, calibrated spring means connected between one end of the container and the frame for balancing the container and contents at various positions according to the weight thereof, means connected between the container and the frame for indicating such positions, a liquid delivery conduit passing through one of the pivots and secured to the frame and a liquid return conduit passing through the other of the pivots and secured to the frame, means passing through the pivots and connected between each conduit and the container for accommodating relative motion between the container and the frame, a gas connection to the gas compartment, and barrier means preventing expansion of the diaphragm by gas applied through said gas inlet beyond a predetermined gas compartment volume significantly smaller than the total container volume.
Dependencies are inferred from the claim text.