Elongated-member-driving apparatus – With means to move or guide member into driving position – Including supply magazine for constantly urged members
Reexamination Certificate
2002-08-23
2004-06-01
Rada, Rinaldi I. (Department: 3721)
Elongated-member-driving apparatus
With means to move or guide member into driving position
Including supply magazine for constantly urged members
C227S131000, C173S211000
Reexamination Certificate
active
06742691
ABSTRACT:
BACKGROUND OF INVENTION
1. Field of Invention
The present invention relates to a nail stapler.
2. Related Prior Art
Referring to
FIGS. 5 and 6
, a conventional nail stapler includes a gun
10
and a magazine
16
. The gun
10
includes a shell
11
, a solenoid
12
received in the shell
11
, a puncher
13
received in the shell
11
, a spring
14
compressed between an end of the solenoid
12
and a head of the puncher
13
and a pin
15
secured to the puncher
13
. When activated, the solenoid
12
attracts the puncher
13
and therefore the pin
15
in order to punch a staple nail
17
from the magazine
16
through an outlet
18
. When the magnetic force is gone, the puncher
13
resumes its original position due to the spring
14
as shown in FIG.
5
. However, the puncher
13
may hit and rebound from a portion of the shell
11
so as to punch a staple by mistake as shown in FIG.
6
.
The present invention is therefore intended to obviate or at least alleviate the problems encountered in the prior art.
SUMMARY OF INVENTION
It is the primary objective of the present invention to provide a nail stapler with a security device for preventing stapling by mistake.
According to the present invention, a nail stapler includes a gun and a magazine for receiving and supplying staple nails to the gun. The gun includes a shell, a solenoid received in the shell, a puncher received in the shell for movement from an original position to a punching position due to attraction by the solenoid, a pin secured to the puncher and inserted through the solenoid, a spring compressed between a portion of the solenoid and a portion of the puncher, and a security device received in the shell for buffering the puncher when the puncher is pushed from the punching position to the original position by the spring.
The security device includes an elastic end for contact with the puncher.
The nail elastic end of the security device includes a plurality of elastic elements. The puncher defines a cavity with a wall for contact with the elastic elements.
The shell includes two halves each with a retainer formed on an internal face. The security device defines a groove for receiving the retainers of the halves of the shell.
Other objectives, advantages, and novel features of the invention will become more apparent from the following detailed description when taken in conjunction with the attached drawings.
REFERENCES:
patent: 3325074 (1967-06-01), Batliner et al.
patent: 3434026 (1969-03-01), Doyle
patent: 4515303 (1985-05-01), Schadlich et al.
patent: 4573621 (1986-03-01), Merkator et al.
patent: 4778094 (1988-10-01), Fishback
patent: 4946087 (1990-08-01), Wingert
patent: 5025971 (1991-06-01), Schafer et al.
patent: 5098004 (1992-03-01), Kerrigan
patent: 6145727 (2000-11-01), Mukoyama et al.
patent: 6364193 (2002-04-01), Tsai
Durand Paul
Kamrath Alan D.
Nikolai & Merserau, P.A.
Rada Rinaldi I.
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