Staple-driving gun with safety protection

Details Staple-driving gun with safety protection Staple-driving gun with safety protection

2006-03-01

2008-07-22

Nash, Brian D (Department: 3721)

Elongated-member-driving apparatus

With interlock means

C227S107000

Reexamination Certificate

active

07401719

ABSTRACT:
A staple-driving gun includes a gun body having a hollow housing configured with first and second air chambers separated by a partition, and a staple-discharging member mounted on the housing. 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 such that compressed air flowing from the first air chamber into the second air chamber via a valve hole in the partition urges the piston rod to move toward the staple-discharging member for staple discharging. A biasing member biases the sleeve to a standby position, where the valve end portion of the sleeve seals the valve hole in the partition.

REFERENCES:
patent: 3281046 (1966-10-01), Boulay
patent: 3542273 (1970-11-01), Hedrick
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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