Elongated-member-driving apparatus – With means to move or guide member into driving position – Including supply magazine for constantly urged members
Reexamination Certificate
2001-01-16
2001-10-02
Smith, Scott A. (Department: 3721)
Elongated-member-driving apparatus
With means to move or guide member into driving position
Including supply magazine for constantly urged members
Reexamination Certificate
active
06296168
ABSTRACT:
FIELD OF THE INVENTION
The present invention relates to an exhausted air dispensing device for a pneumatic power nailer wherein a cover is rotatably mounted to an end cap on a rear end of the barrel by engaging an annular hook of the cover with a groove in the end cap of the barrel.
BACKGROUND OF THE INVENTION
A conventional exhausted air dispensing device for a pneumatic power nailer is disclosed in FIG.
1
and includes a cover
13
rotatably mounted to a rear end of the barrel of the power nailer and the cover
13
has a radial opening
12
defined therethrough. An end cap
10
extends from the rear end of the barrel of the power nailer and a hole
11
is defined through the end cap
10
so that the exhausted air ejects from the hole
11
. A plurality of bosses
14
extend radially from a root portion of the end cap
10
so as to be received in a groove
15
defined in an inside of the cover
13
. Therefore, the cover
13
can be rotated to adjust the position of the opening
12
to prevent the exhausted air together with dust or waste wooden powder from blowing to the user. Besides, because the exhausted air expelled from the holes
11
is so strong so that the cover
13
could not be securely mounted to the end cap
10
and the cover
13
could be loosened so that the position of the radial opening
12
is changed.
The present invention intends to provide an engagement structure between the cover and the end cap of the nailer, which ensures the positioning of the cover.
SUMMARY OF THE INVENTION
In accordance with one aspect of the present invention, there is provided an exhausted air dispensing device for a power nailer and comprising an end cap connected to a rear end of the nailer. An annular recess is defined in a surface of the end cap and a protrusion is located in a center of the annular recess. A plurality of holes are defined radially through the protrusion and an annular groove is defined radially inward in a periphery of the protrusion. A cover has a flange received in the annular recess and an opening is defined radially through the flange. A circular lip extends from a surface of the cover and an annular hook extends radially inward from the circular lip. The annular hook is rotatably engaged with the annular groove.
The primary object of the present invention is to provide a cover which is rotatably and securely mounted to an end cap of the nailer so that the exhausted air from the nailer will not loosen the cover.
These and further objects, features and advantages of the present invention 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: 5110030 (1992-05-01), Tanji
patent: 5259465 (1993-11-01), Mukoyama
patent: 5485946 (1996-01-01), Jankel
patent: 5715986 (1998-02-01), Sauer
patent: 5782395 (1998-07-01), Sauer
patent: 5881941 (1999-03-01), Lai
patent: 5927584 (1999-07-01), Akiba
patent: 6059166 (2000-05-01), Ho et al.
Basso Industry Corp.
Baxley Charles E.
Smith Scott A.
LandOfFree
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