Patent ID: 7165486

Claim:
A vehicle restraint valve block system, comprising: a first valve operably connecting a lift mechanism to a pump and a reservoir to raise and lower a vehicle restraint, wherein the first valve is the only valve in the valve block system that selectively permits fluid communication between the lift mechanism and the pump or the lift mechanism and the reservoir; a second, third, and fourth valve, which together operably connect an extender mechanism to the pump and the reservoir to extend and retract the vehicle restraint, wherein the second valve is a one-way check valve and the third and fourth valves are two-way, two-position poppet valves; and a fifth valve that permits fluid to flow from the pump to the first valve but blocks fluid flow from the first valve back to the pump, wherein the fifth valve is a one-way check valve and the first, second, third, fourth and fifth valves are configured in a single valve block.