Patent ID: 6536647
Filing Date: 2003-03-25
Classification: B25C

Abstract:
A holder for a drive piston (8) of a setting tool, comprising a return element (19) having a first end (21) that applies pressure to the drive piston (8), and a second end (22) spaced from the first end (21); and axial and radial stop means (16-18) fixedly securable in the setting tool and against which the second end (22) of the return element (21) is displaceable and elastically deformed upon displacement of the drive piston (8) in a setting direction (20), wherein the return element (19) has a funnel shape, and wherein the return element (19) is formed of an annular disc elastically expandable in a radial direction and having an inner circumference thereof axially offset relative to an outer circumference thereof.