Patent ID: 8753564

Claim:
A piston rod and cylinder seal device, comprising: a cylinder creating a piston chamber extending between opposed first and second cylinder heads, a piston slidably disposed in the piston chamber, the piston having a piston rod connected to the piston; a piston rod spud integrally connected to and extending from the piston rod, the piston rod spud including a shaft receiving bore; a first seal member positioned in the shaft receiving bore; and a hollow tubular shaft connected to the second cylinder head and positioned in a spud receiving bore of the second cylinder head, the shaft aligned to be slidingly received in the shaft receiving bore and sealed by contact with the first seal member when the piston rod spud is received in the spud receiving bore and the piston contacts the second cylinder head, the shaft released from contact with the first seal member when the piston moves away from the second cylinder head withdrawing the piston rod spud from the spud receiving bore.