Power actuated tools

Details Power actuated tools Power actuated tools

2005-02-22

2005-02-22

Kim, Eugene (Department: 3721)

Elongated-member-driving apparatus

With means to move or guide member into driving position

Including supply magazine for constantly urged members

C227S010000, C173S211000

Reexamination Certificate

active

06857548

ABSTRACT:
An explosively operated tool (1) for driving a fastener into a substrate such as steel or concrete has a resetting mechanism (12) for resetting a piston (10) of the tool into a rear part of a barrel assembly (8) of the tool after each firing of the tool. The barrel assembly (8) is mounted for axial movement within the tool housing (2) and co-operates with a mass mounted for rearwards movement relative to the housing (2) in opposition to a biasing force to absorb recoil on firing of the tool. The resetting mechanism (12) for resetting the piston (10) into a rear part (2a) of the barrel assembly after firing is powered in response to displacement of the mass on recall.

REFERENCES:
patent: RE30617 (1981-05-01), Butler et al.
patent: 4941391 (1990-07-01), Ehmig et al.
patent: 5538172 (1996-07-01), Jochum et al.
patent: 5715983 (1998-02-01), Lee
patent: 5884828 (1999-03-01), Hirtl et al.
patent: 6123243 (2000-09-01), Pfister et al.
patent: 6126055 (2000-10-01), Gantner et al.
patent: 0035638 (2000-06-01), None

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