Patent ID: 7425000
Filing Date: 2008-09-16
Classification: B23Q

Abstract:
1. A quick-action clamping cylinder for anchoring a feed nipple located on any predetermined part, the quick-action clamping cylinder comprising: a housing; a lid enclosing a space within the housing an insert module adapted to fit into the space within the housing, said insert module having a spring assembly, a sealable chamber containing said spring assembly, a spring support base defining an annular seat for one side of the spring assembly, and a ball support member for supporting a plurality of balls movable laterally within the space and adapted releasably to secure the feed nipple in a locked position within the module, an underside of said ball support member and said spring support base being interconnected by a threaded member to compress said spring to a predetermined tensioned position; a piston within said housing and biased against each of said balls by said spring assembly to move said balls laterally to engage and lock the feed nipple within the module, said piston being displaceable against the bias of said spring assembly under fluid pressure in said housing to release said balls from the feed nipple; a base plate connected to the clamping cylinder and defining a drill bushing; and an adapter connected by said threaded member to said insert module, said adapter having a peg-shaped extension engaging said drill bushing.