Holder for a drive piston of a setting tool

Details Holder for a drive piston of a setting tool Holder for a drive piston of a setting tool

2005-12-27

2005-12-27

Smith, Scott A. (Department: 3721)

Elongated-member-driving apparatus

Explosive-type driving means

With plunger

Reexamination Certificate

active

06978919

ABSTRACT:
A piston holder for a drive piston (8) of a setting tool and having a circumferential adjusting surface (16) inclined toward a central axis (17) thereof so that a diameter of the adjusting surface (16) increase toward a rear, with respect to a setting direction (18) of the setting tool, end of the drive piston (8), with the piston holder including contact elements (22; 24; 36; 38; 40; 41, 52; 53; 58–61) engageable with the adjusting surface (16), and a spring (21; 27; 35; 36; 54; 55; 62) for biasing the contact elements into engagement with the adjusting surface (16).

REFERENCES:
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patent: 5950900 (1999-09-01), Frommelt et al.
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patent: 6502736 (2003-01-01), Dittrich et al.
patent: 1478837 (1969-03-01), None
patent: 8508926 (1985-06-01), None
patent: 3819813 (1989-12-01), None

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