Water pipe joint

Details Water pipe joint Water pipe joint

2001-08-21

2002-10-22

Nicholson, Eric K. (Department: 3679)

Pipe joints or couplings

Essential catch

With manipulator

C285S308000, C285S309000

Reexamination Certificate

active

06467816

ABSTRACT:

BACKGROUND OF THE INVENTION
1. Field of the Invention
The present invention relates generally to a water pipe, and more particularly to a water pipe joint.
2. Description of Related Art
As shown in
FIG. 1
, a water pipe joint of the prior art comprises a hollow main body
10
which is provided at one end with a hose connector
101
and a locking nut
2
. The main body
10
is provided at other end with a spring
17
fitted thereover, walls
11
, and an expansion hole
12
. Located between two walls
11
is a guide slot
110
for receiving a driven piece
13
which is provided with a retaining block
130
. The retaining block
130
is extracted and retracted via the expansion hole
12
. The driven piece
13
is pushed by a driving piece
15
. The main body
10
is provided with a protruded edge
103
for stopping a stop piece
16
of a control sleeve
14
. The spring
17
is forced backward by the control sleeve
14
, so as to enable the retaining block
130
to retract into the expansion hole
12
. As a result, the water discharging connector
1
can be inserted into a through hole
102
of the main body
10
. As the control sleeve
14
is let go, the driven piece
13
is forced by the driving piece
15
, thereby causing the retaining block
130
to jut out of the expansion hole
12
. The main body
10
is thus joined with the water discharging connection
1
which can be connected with a hose or sprinkler.
Such a prior art water pipe joint as described above has several drawbacks. In the first place, it is rather complicated in construction and is therefore not cost-effective. In addition, the prior art water pipe joint is vulnerable to failure or clogging. In view of the fact that the control sleeve
14
and the main body
10
cannot be separated easily once they are joined together, the prior art water pipe-joint cannot be repaired or maintained with ease. Moreover, the control sleeve
14
and the retaining block
130
are made separately by injection molding, thereby resulting in a substantial increase in production cost.
BRIEF SUMMARY OF THE INVENTION
The primary objective of the present invention is to provide a water pipe joint which is free of the drawbacks of the prior art water pipe described above.
The features, functions, and advantages of the present invention will be more readily understood upon a thoughtful deliberation of the following detailed description of the preferred embodiment of the present invention with reference to the accompanying drawings.


REFERENCES:
patent: 3873062 (1975-03-01), Johnson et al.
patent: 4660803 (1987-04-01), Johnston et al.
patent: 4903942 (1990-02-01), Licciardello et al.
patent: 5209528 (1993-05-01), Weh et al.
patent: 5884943 (1999-03-01), Katzer et al.
patent: 5927683 (1999-07-01), Weh et al.
patent: 6199913 (2001-03-01), Wang
patent: 6283443 (2001-09-01), Taneya

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