Staple-driving gun capable of ensuring attachment of a seal...

Details Staple-driving gun capable of ensuring attachment of a seal... Staple-driving gun capable of ensuring attachment of a seal...

2007-05-08

2007-05-08

Nash, Brian (Department: 3721)

Elongated-member-driving apparatus

With means to support member and/or work relative to driver

Impact-type driver

C227S107000, C227S141000, C227S148000

Reexamination Certificate

active

11378182

ABSTRACT:
A staple-driving gun includes a hollow housing configured with first and second air chambers separated by a partition. A piston unit includes an operating member connected fixedly to a sleeve disposed movably in the first air chamber, and a piston rod disposed movably in the sleeve. The operating member is operable so as to move a valve end portion of the sleeve away from the partition. Hence, compressed air flows from the first air chamber into the second air chamber via a valve hole in the partition, and an air-excluding passage constituted by a gap between the valve end portion of the sleeve and an annular flange of a seal washer mounted on the valve end portion of the sleeve, and an air-excluding hole in the valve end portion of the sleeve so as to urge the piston rod to move toward a staple-discharging member.

REFERENCES:
patent: 3281046 (1966-10-01), Boulay
patent: 3542273 (1970-11-01), Hedrick
patent: 4196833 (1980-04-01), Haytayan
patent: 4744238 (1988-05-01), Halbert
patent: 4907730 (1990-03-01), Dion
patent: 5555780 (1996-09-01), Beach et al.
patent: 6095392 (2000-08-01), Batts et al.
patent: 6155472 (2000-12-01), Deziel
patent: 6834789 (2004-12-01), Dion et al.

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