Elongated-member-driving apparatus – With means to move or guide member into driving position – Magnetic member-feed and/or holding means
Reexamination Certificate
2000-04-14
2001-10-30
Smith, Scott A. (Department: 3721)
Elongated-member-driving apparatus
With means to move or guide member into driving position
Magnetic member-feed and/or holding means
C227S119000, C227S130000
Reexamination Certificate
active
06308879
ABSTRACT:
FIELD OF THE INVENTION
The present invention relates to a nailer that has a ring enclosing a magnet in a tube to prevent loss of the magnetic force of the magnet. A protrusion extends from an inside of the tube to avoid nails from being inclined relative to a longitudinal axis of the tube.
BACKGROUND OF THE INVENTION
A conventional pneumatic nailer is illustrated in FIG.
1
and generally includes a head
10
connected to pneumatic source and a neck
12
extends from the head
10
. A tube
11
is connected to the neck
12
and has a magnet
15
engaged in the tube
11
so as to attract nails
13
in the tube
11
before the nails
13
are ejected into an object
14
. In order to maintain the magnetic force of the magnet
15
in the tube
11
, the material of the tube
11
has to be especially chosen so that the feature of the magnet
15
will not fail. However, the material of the tube
11
is expensive. Besides, nails
13
in the tube
11
tend to be inclined relative to a longitudinal axis of the tube
11
as shown because the diameter of the tube
11
is larger than the nails
13
. Therefore, the nails
13
could be ejected into the object
14
inclinedly. Furthermore, the magnet
15
could drop from the tube
11
by vibration.
The present invention intends to provide a nailer that has a positioning means to securely position the magnet in the tube. A protrusion extends from an inside of the tube to let the nails attracted by the magnet orient a correct direction in the tube.
SUMMARY OF THE INVENTION
In accordance with one aspect of the present invention, there is provided a nailer comprising a head having a neck connected to a bottom of the head and a tube extending from the neck. A protrusion extends from an inside of the tube and an aperture is defined through the protrusion and the tube so as to receive a magnet in the aperture. A position member is mounted to an outside of the tube and seals the aperture.
The object of the present invention is to provide a nailer wherein nails attracted by the magnet are arranged to orient an upright direction so that every nail can be ejected as desired into an object.
Another object of the present invention is to provide a nailer with a position member mounted to the tube so as to prevent a magnet in the tube from dropping from the aperture in the tube by vibration.
These and further objects, features and advantages of the present invention to will become more obvious from the following description when taken in connection with the accompanying drawings which show, for purposes of illustration only, several embodiments in accordance with the present invention.
REFERENCES:
patent: 2829369 (1958-04-01), Browning
patent: 3820705 (1974-06-01), Beals
patent: 3979040 (1976-09-01), Denin
patent: 4611739 (1986-09-01), Rowton
patent: 5074453 (1991-12-01), Tachihara et al.
patent: 5647525 (1997-07-01), Ishizawa
patent: 6145723 (2000-11-01), Gupta
Besco Pneumatic Corp.
Rosenberg , Klein & Lee
Smith Scott A.
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