Fluid sprinkling – spraying – and diffusing – Flow line or nozzle attached or carried handgrip or handle
Reexamination Certificate
2000-05-15
2001-08-28
Scherbel, David A. (Department: 3752)
Fluid sprinkling, spraying, and diffusing
Flow line or nozzle attached or carried handgrip or handle
C239S391000, C239S526000
Reexamination Certificate
active
06279839
ABSTRACT:
FIELD OF THE INVENTION
The present invention relates generally to a sprinkling device, and more particularly to a nozzle.
BACKGROUND OF THE INVENTION
As shown in
FIGS. 1 and 2
, a pistol nozzle of the prior art comprises a main body
10
, an action rod
20
, a hand lever
30
, and an adjustment nut
40
. The main body
10
is provided with a through hole
101
and a head
102
which is in turn provided with a outlet
103
in communication with the through hole
101
. The main body
10
is further provided a handle
104
thereof with a flow hole
105
in communication with the through hole
101
. The action rod
20
is disposed in the through hole
101
and is provided at the front end thereof with an annular body
202
having a water-distributing rib
202
. The annular body
202
acts to a water-distributing rib
201
. The annular body
202
acts to obstruct the outlet
103
of the head
102
. The action rod
20
is provided in the proximity of one end thereof with an obstruction portion
203
for confining a spring
204
in conjunction with the annular body
202
. The action rod
20
is further provided at one end thereof with a threaded portion
205
, which is engaged with the adjustment nut
40
via the slide hole
301
of the top end of the hand lever
30
. The hand lever
30
has a curved portion
302
, which is pivoted with the handle
104
of the main body
10
. The main body
10
is provided at the rear end thereof with a fastening ring
106
for fastening the top end of the hand lever
30
at an appropriate distance.
As shown in
FIG. 3
, when the hand lever
30
is pressed, the hand lever
30
swivels on the pivoting point at which the hand lever
30
is pivoted with the handle
104
. As a result, the top end of the handle
104
is pulled rearwards. In the meantime, the rear end of the action rod
20
is caused to slide along the slide hole
301
of the hand lever
30
. In light of the action rod
20
being engaged with the adjustment nut
40
, the action rod
20
moves rearwards at the time when the top end of the handle
104
is pulled rearwards, thereby causing the annular body
202
of the front end of the action rod
20
to move away from the outlet
103
so as to allow the passage of water through the flow hole
105
, the through hole
101
, and the water-distributing rib
201
of the annular body
202
. The water is finally emitted through the outlet
103
. The spring
204
, which is fitted over the action rod
20
, is compressed by the displaced annular body
202
and the obstruction portion
203
. As the hand lever
30
is relieved of the pressure exerting thereon, the recovery force of the compressed spring
204
forces the action rod
20
and the hand lever
30
to move back to their original positions.
Such a pistol nozzle of the prior art as described above is defective in design in that the slide hole and the adjustment bolt are so exposed as to be vulnerable to impact or damage, thereby disabling the pistol nozzle. In addition, the exposed adjustment bolt undermines the overall esthetic effect of the prior art pistol nozzle. Moreover, when the action rod is pulled rearwards, the adjustment nut is unable to be actuated by the slide hole with certainly, thereby causing the action rod to sway or move aside. As a result, the action rod is not fully acted on by the force exerting on the hand lever. The user of the prior art pistol nozzle is thus apt to tire out.
SUMMARY OF THE INVENTION
The primary objective of the present invention is to provide a pistol nozzle which is free from the drawbacks of the prior art pistol nozzle described above.
In keeping with the principle of the present invention, the foregoing objective of the present invention is attained by the pistol nozzle comprising a main body in which an action rod is disposed such that the action rod is slidably fastened at one end thereof with a hand lever to slide in the locating seat slide slot. The amount of water being emitted via the outlet is adjusted by the water flow between the through hole and the action rod. An adjustment sleeve is fastened with one end of the action rod, with the one end of the action rod being fastened with the locating seat. The action rod, the locating seat and other component parts are all concealed in the main body in such a way that they do not undermine the overall esthetic effect of the pistol nozzle of the present invention.
The locating seat of the present invention is provided with two slide slots, each having a protruded edge engageable with the arcuate slot of the action rod. In light of the locating portion of the slide slot being located in the middle of the slide slot and narrower than both ends of the slide slot, the arcuate slot of the action rod is located by the locating portion of the slide slot at the time when the action rod moves rearwards along with the locating seat. The rearward displacement of the action rod can be thus carried out without causing the action rod sway or move aside. In other words, the action rod is fully acted on by an external force exerting on the hand lever of the pistol nozzle of the present invention.
The features and the advantages of the present invention will be more readily understood upon a thoughtful deliberation of the following detailed description of a preferred embodiment of the present invention with reference to the accompanying drawings.
REFERENCES:
patent: 4448355 (1984-05-01), Roman
patent: 4666085 (1987-05-01), Liaw
patent: 5232162 (1993-08-01), Chih
patent: 5323968 (1994-06-01), Kingston et al.
patent: 5333792 (1994-08-01), Wang
patent: 5348228 (1994-09-01), Wang
patent: 5630548 (1997-05-01), Chih
patent: 5732886 (1998-03-01), Liaw
patent: 5740968 (1998-04-01), Mueller
patent: 2827402 (1980-01-01), None
Bacon & Thomas PLLC
Hwu Davis
Scherbel David A.
LandOfFree
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