Flow control structure of a pistol nozzle

Details Flow control structure of a pistol nozzle Flow control structure of a pistol nozzle

2002-01-18

2003-02-18

Mar, Michael (Department: 3752)

Fluid sprinkling, spraying, and diffusing

Flow line or nozzle attached or carried handgrip or handle

Pistol grip type

C239S569000, C239S583000

Reexamination Certificate

active

06520427

ABSTRACT:

RELATED U.S. APPLICATIONS
Not applicable.
STATEMENT REGARDING FEDERALLY SPONSORED RESEARCH OR DEVELOPMENT
Not applicable.
REFERENCE TO MICROFICHE APPENDIX
Not applicable.
FIELD OF THE INVENTION
The present invention relates generally to a pistol nozzle, and more particularly to a water flow control structure of the pistol nozzle.
BACKGROUND OF THE INVENTION
As shown in
FIG. 1
, a pistol nozzle of the prior art comprises a control lever
10
and a retaining piece
11
. The control lever
10
is provided with a retaining edge
13
. The retaining piece
11
is provided at the bottom end with a rack
12
opposite in location to the retaining edge
13
of the control lever
10
. The water flow control of the prior art pistol nozzle is attained by the control lever
10
in conjunction with the retaining piece
11
such that the retaining edge
13
is retained by the rack
12
of the retaining piece
11
.
The prior art flow control structure described above is defective in design because the rack
12
of the retaining piece
11
is not properly shielded at all, and because the rack
12
is bound to accumulated or the like, thereby undermining the retaining effect of the rack
12
or the service life span of the rack
12
. In addition, the prior art flow control structure is devoid of a means to bring about the disengagement of the retaining edge
13
with the rack
12
, thereby making the prior art water flow control structure rather inefficient.
BRIEF SUMMARY OF THE INVENTION
The present invention is intended to overcome the drawbacks of the water flow control structure of the prior art pistol nozzle described above.
In keeping with the principle of the Present invention, the objective of the present invention is attained by a pistol nozzle comprising a flow control structure which is easy to use and durable. The flow control structure comprises a main body, an inner rack, a control lever, an outer rack, and two switching members.
The features and the advantages of the present invention will be more readily understood upon a thoughtful deliberation of the following detailed description of the present invention with reference to the accompanying drawings.


REFERENCES:
patent: 3006560 (1961-10-01), Rosenkranz
patent: 3888421 (1975-06-01), Chow
patent: 4448355 (1984-05-01), Roman
patent: 4619403 (1986-10-01), Goldney et al.
patent: 5660333 (1997-08-01), Strahman et al.

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