Patent ID: 7455010
Filing Date: 2008-11-25
Classification: F15B

Abstract:
1. A hydraulic cylinder, the hydraulic cylinder comprising: a cylinder barrel having a rod end, a blind end and pressurized hydraulic fluid sealed within the cylinder barrel; a piston adapted for linear movement within the cylinder barrel; a piston rod attached to the piston and exiting the rod end of the cylinder barrel, the piston rod delivering a reciprocating, linear force as the piston is moved within the cylinder barrel; a blind end closure sealing the blind end of the cylinder barrel; a rod gland inside the cylinder barrel and adjacent the rod end of the cylinder barrel to seal the rod end of the cylinder barrel and to allow for movement of the piston rod through the rod gland; the cylinder barrel further having a portion of greater interior circumference adjacent the rod end of the cylinder barrel and an annular groove on the interior of the cylinder barrel within the portion of greater interior circumference; a compressible locking ring adapted for reception in the annular groove to prevent the rod gland from exiting the cylinder barrel; and the cylinder barrel further including a hole through the cylinder barrel at the annular groove to allow the compressible locking ring to be dislodged from the annular groove.