Explosive powder charged operated setting tool

Details Explosive powder charged operated setting tool Explosive powder charged operated setting tool

1996-12-23

1999-09-14

Harrison, Jessica J.

Elongated-member-driving apparatus

Explosive-type driving means

B25C 108

Patent

active

059509007

ABSTRACT:
An explosive powder charge operated setting tool includes an axially extending piston guide (4) for a driving piston (6) and a retaining device (9) for the driving piston. The driving piston (6) has an axially extending shank (7) terminating in a head (8). The retaining device (9) has at least one radially displaceable ball (11) bearing against a conically-shaped inner surface of an annular spring washer (10) laterally enclosing the ball, and the ball is displaceable to a limited extent parallel to the axial direction of the piston guide (4) in a holding part (12) of the piston guide (4) open towards the shank (7) of the driving piston (6). The leading end of the driving piston has at least one circumferentially extending recess (13) which cooperates with the ball (11) of the retaining device (9).

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patent: 5538172 (1996-07-01), Jochum et al.
patent: 5544801 (1996-08-01), Schick

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