Fastener driving tool

Elongated-member-driving apparatus – With interlock means

Reexamination Certificate

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Details

C227S010000, C227S130000, C277S377000

Reexamination Certificate

active

07322501

ABSTRACT:
A cylinder is constituted such that the cylinder includes a large diameter portion constituted by forming a portion thereof brought into contact with an O ring by a diameter larger than a diameter of other portion when a piston is disposed at an upper dead center and a small diameter portion formed downward from the large diameter portion, and a fastening margin is provided between an outer periphery of the O ring and an inner periphery of the cylinder even when the piston is disposed at any position from the upper dead center to a lower dead center and a clearance is provided between an inner periphery of the O ring and an outer periphery of a groove.

REFERENCES:
patent: 3023014 (1962-02-01), Donner
patent: 3375758 (1968-04-01), Novak et al.
patent: 3527142 (1970-09-01), Obergfell
patent: 3673922 (1972-07-01), Doyle
patent: 3815475 (1974-06-01), Howard et al.
patent: 3945551 (1976-03-01), Sato et al.
patent: 4483473 (1984-11-01), Wagdy
patent: 4509669 (1985-04-01), Elliesen
patent: 5711471 (1998-01-01), White
patent: 5775201 (1998-07-01), Tanji et al.
patent: 6116489 (2000-09-01), Branston
patent: 2005/0279802 (2005-12-01), Moeller
patent: 2002-321168 (2002-11-01), None
patent: 2003-236768 (2003-08-01), None

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