Patent ID: 7527106
Filing Date: 2009-05-05
Classification: B25C

Abstract:
1. A method comprising: providing a housing that defines a housing cavity with a rod aperture; coupling a valve assembly to the housing; inserting a guide assembly into the housing cavity, the guide assembly being sealingly engaged to the housing and defining a flange bore; inserting a cylinder sleeve to the guide assembly such that a periphery of the cylinder sleeve sealingly engages the guide assembly at a first seal position and a second seal position, the first seal position being associated with a flange that is received into the flange bore; inserting a piston assembly to the cylinder sleeve, the piston assembly including a driver that extends into the rod aperture; coupling a cap assembly to the housing to enclose an end of the housing cavity opposite the rod aperture, the cap assembly including an exhaust outlet; operating the valve assembly to supply a pressurized gas between the first and second seal positions to drive the cylinder sleeve toward the cap assembly to fluidly couple the exhaust outlet and an interior portion of the cylinder sleeve; and initiating movement of the piston toward the rod apertures by operating the valve assembly to support the pressurized gas to the housing cavity, the pressurized gas in the housing cavity acting on the flange to drive the cylinder sleeve away from the cap assembly to fluidly uncouple the exhaust outlet from the interior portion of the cylinder sleeve and fluidly couple the interior portion of the cylinder sleeve with the housing cavity.