Device for adjusting single or auto shooting for staple guns

Details Device for adjusting single or auto shooting for staple guns Device for adjusting single or auto shooting for staple guns

2002-12-27

2003-12-16

Smith, Scott A. (Department: 3721)

Elongated-member-driving apparatus

With interlock means

C227S130000

Reexamination Certificate

active

06662989

ABSTRACT:

FIELD OF THE INVENTION
The present invention relates to a staple gun that has an adjusting member which lifts or lowers an activation plate connected with the trigger so as to perform single or auto shooting feature.
BACKGROUND OF THE INVENTION
A conventional staple gun is shown in
FIGS. 1 and 2
and generally includes a body
10
with a valve
13
connected thereto which is activated by an activation plate
12
so as to eject a staple or a nail. The activation plate
12
is located behind the trigger
11
and a safety plate
14
extends through a hole
15
defined through the trigger
11
and contacts the activation plate
12
. The activation plate
12
includes a fork-like end and includes two protrusions
17
and a recess
16
, located between the two protrusions
17
. The safety plate
14
is first pushed against the object to be stapled and the pushes the activation plate
12
toward the valve
13
. When the trigger
11
is pulled, the body of the activation plate
12
touches the valve
13
to eject the staple. The push of the trigger
11
makes the activation plate
12
pivoted an angle so that the safety plate
14
no longer contacts the body of the activation plate,
12
and is located between the two protrusions
17
. Therefore, the activation plate
12
is not pushed by the safety plate
14
and no staple will be ejected even if the trigger
11
is pulled again. This single shooting feature does not meet the requirement of continuous shootings of the users and repeatedly release and pull the trigger consumes,;too much time and efforts.
The present invention intends to provide a device that can set the staple gun at single shooting or auto shooting status.
SUMMARY OF THE INVENTION
In accordance with one aspect of the present invention, there is provided a staple gun that has a trigger assembly which comprises a trigger with an activation plate received therein and an adjusting member connected to the trigger. A cam rod extends through the body of the staple gun and is engaged with an eccentric hole defined through the adjusting member such that the trigger and the activation plate are both lifted or lowered by rotating the adjusting member. The relative position between the activation plate, the valve and the safety plate of the staple gun can be adjusted so as to obtain different ways of shooting of the staples.


REFERENCES:
patent: 5551621 (1996-09-01), Valles
patent: 5692663 (1997-12-01), Yang
patent: 5791545 (1998-08-01), Lin
patent: 5836501 (1998-11-01), Lai
patent: 5862969 (1999-01-01), Lee
patent: 6059161 (2000-05-01), Chang et al.
patent: 6116488 (2000-09-01), Lee
patent: 6213372 (2001-04-01), Chen
patent: 6357647 (2002-03-01), Ou

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