Elongated-member-driving apparatus – With means to move or guide member into driving position – With means to assure correct orientation of member
Reexamination Certificate
2002-12-06
2003-06-17
Smith, Scott A. (Department: 3721)
Elongated-member-driving apparatus
With means to move or guide member into driving position
With means to assure correct orientation of member
C227S120000, C227S136000, C227S123000, C227S128000
Reexamination Certificate
active
06578749
ABSTRACT:
BACKGROUND OF THE INVENTION
1. Field of the Invention
The present invention relates to a nail guide device, and more particularly to an improved nail guide device for a power nailer, which has a guide device to facilitate accurate and consistent orientation and placement of nails as the nails exit the power nailer.
2. Description of the Prior Art
A Conventional nail guide device normally comprises a nose portion
10
and two guiding plates
20
, as shown in FIG.
1
. The nose portion
10
is formed at the end of a power nailer, and two stationary portions
11
are respectively formed on the upper and lower of the nose portion
10
. Two positioning pins
13
are respectively located on each of the two stationary portions
11
. Two recesses
14
are respectively formed at each of the two stationary portions
11
and two protrusions
15
are respectively formed on one end of each of the recesses
14
. Each of the guiding plates
20
has a hole
22
for engaging with each of the positioning pins
13
of the two stationary portions
11
. Two noses
23
are respectively formed on each of the guiding plates
20
. Two springs
16
are received in the each of the recesses
14
and each engaged between each of the protrusions
15
of the recesses
14
and each of the noses
23
of the guiding plates
20
for biasing the guiding plates
20
. In this device, a nail, by virtue of the springs
16
, is guided parallel to the axis of the nose portion
10
by a guide surface
21
of the guiding plate
20
pushing against each other. However, while in the condition of the tension of the springs
23
are unequal, the nail will be tilted. Furthermore, the nail guide device for the conventional power nailer is difficult in assembling and cost too much.
The present invention has arisen to mitigate and/or obviate the afore-described disadvantages of the conventional nail guide device.
SUMMARY OF THE INVENTION
In accordance with one aspect of the present invention, there is provided a nail guide device comprises a gap portion of a muzzle of a power nailer and a guiding plate affixed to a fix member of the gap portion, a protrusion of the guiding plate contacts against an interior surface of a semi-tubular member of the gap.
The primary object of the invention is to provide a nail guide device for a power nailer which is capable of guiding the movement direction of the nail in the nose portion parallel to the axis of the nose portion of a power nailer and hammered vertically into a work piece.
Another object of the present invention is to provide a nail guide device for a power nailer which is more simple both in structure and assembly.
A further object of the present invention is to provide a nail guide device for a power nailer which is compact in size and cost-saved in material.
REFERENCES:
patent: 5316200 (1994-05-01), Wallin
patent: 5452835 (1995-09-01), Shkolnikov
patent: 5476204 (1995-12-01), Eisenpresser et al.
patent: 5579975 (1996-12-01), Moorman
patent: 5810239 (1998-09-01), Stich
patent: 6279808 (2001-08-01), Larsen
Liou Guey-Hong
Shen Yao-Sheng
Basso Industry Corp.
Baxley Charles E.
Smith Scott A.
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