Tools – Wrench – screwdriver – or driver therefor – Machine
Reexamination Certificate
2002-11-15
2004-03-09
Wilson, Lee D. (Department: 3723)
Tools
Wrench, screwdriver, or driver therefor
Machine
C081S435000
Reexamination Certificate
active
06701811
ABSTRACT:
FIELD OF THE INVENTION
The present invention relates to a screw feeding device and more articularly, to a feeding device that has a compact size and includes an adjusting shaft for the safety board so that the device is easily to be assembled, operated and the depth of the screws can be controlled.
BACKGROUND OF THE INVENTION
A conventional screw feeding device known to the applicant is disclosed in U.S. Pat. No. 5,402,695 to Hornung and shown in
FIGS. 1
to
4
. The device includes a guide body
10
and a barrel
11
which is connected to the guide body
10
by a spring and includes a shaft
12
pivotably received therein. An end of the shaft
12
has an axle
14
for connecting two gears
13
and the other end of the shaft
12
is movably received in a slot
101
in the guide body
10
. A positioning member
16
with a spring
15
are connected to the front end of the barrel
11
. The shaft
12
swings in the slot
102
so as to let the two gears
13
drive the belt
18
with the screws
17
. Notches
131
are defined in an inner side of each gear
13
and a one-direction valve
133
with a spring
132
are located between the two gears
13
so that the gears
13
can only rotate in one direction by the valve
133
. The belt
18
and the screws
17
move in the direction and the positioning member
16
positions the belt
18
.
Due to the movement of the two gears
13
is made by the swinging of the shaft
12
, and the two gears
13
have to cooperate with the valve
133
and the positioning member
16
so that the whole assembly is complicated and involves too many parts. It requires complicated manufacturing processes to make the notches
131
in the two gears
13
and to install the spring
132
in the one-direction valve
133
. The whole assembly occupies a lot of space. The belt
18
is not conveniently positioned because it is engaged with two gears
13
. Furthermore, the cooperation between the swinging of the gears
13
and the positioning member
16
cannot be satisfied by the users.
SUMMARY OF THE INVENTION
The primary object of the present invention is to provide a screw feeding device that has a compact size and is easily to be assembled. A gear, a positioning gear and a hollow shaft are made into a one piece member and a one-direction bearing is received in the hollow shaft, a biasing plate is engaged with the positioning gear, thereby simplifying the structure of the device and may have a compact screw feeding device.
Another object of the present invention is that the screw feeding device may adjust the depth of the screws. An adjusting shaft is cooperated with a safety board, the adjusting shaft has an inclined surface which is engaged with a bead so as to be positioned precisely to achieve the purpose of micro-adjusting the depth of the screws.
REFERENCES:
patent: 5402695 (1995-04-01), Hornung
patent: 6073523 (2000-06-01), Shinjo
patent: 6296166 (2001-10-01), Huang
Chang Shin-Nan
Lai ChUn-Chih
Basso Industry Corp.
Baxley Charles E.
Wilson Lee D.
LandOfFree
Screw feeding device does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Screw feeding device, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Screw feeding device will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3220530