Water stopping seat of ceramic control valve of faucet

Details Water stopping seat of ceramic control valve of faucet Water stopping seat of ceramic control valve of faucet

2000-07-05

2001-08-28

Rivell, John (Department: 3753)

Fluid handling

Removable valve head and seat unit

Retained by bonnet or closure

C137S454500, C137S625280, C137S625310, C251S208000

Reexamination Certificate

active

06279605

ABSTRACT:

BACKGROUND OF THE INVENTION
1. Field of the Invention
The present invention relates generally to a ceramic control valve, and more particularly to a water stopping seat of the ceramic control valve.
2. Description of Related Art
As shown in
FIGS. 1-3
, a conventional faucet
10
has a receiving portion
11
, a fastening chamber
12
, a handle
13
, and a ceramic control valve
20
disposed in the fastening chamber
12
such that the ceramic control valve
20
is actuated by the handle
13
.
The ceramic control valve
20
comprises a cylindrical body
21
, a water outlet
22
, an annular edge
23
, a threaded section
24
, a washer
25
, an axial hole
26
, a stop rib
27
, a press edge
28
, and a locating slot
29
.
A rotary shaft
30
is provided with two water stopping rings
31
, a protruded shoulder portion
32
, a circular
33
, and a moving rib
34
.
A rotary valve block
35
is provided with an insertion slot
36
corresponding in location to the moving rib
34
, a rotary slide surface
37
, and a guide slot
38
.
A stationary valve block
39
is provided with an opening
40
, and a locating rib
41
corresponding in location to the locating slot
29
of the cylindrical body
21
.
A pressure rotary member
42
is provided with a wing portion
44
and a retaining surface
45
.
A water stopping pad
46
is provided with a through hole
47
, an annular groove
48
, and a plurality of annular projections
49
.
The conventional ceramic control valve
20
is fastened in the fastening chamber
12
of the faucet
10
by a pneumatic tool such that the water stopping pad
46
of the ceramic control valve
20
can not be easily located, and the rotary valve block
35
and the stationary valve block
39
are often jammed. In order to overcome the deficiencies described above, a conventional water stopping seat
50
is used in place of the water stopping pad
46
. The water stopping seat
50
is formed of two o-rings
51
and
52
, which are disposed in the cylindrical body
21
of the ceramic control valve
20
, as shown in
FIGS. 3 and 4
. The water stopping seat
50
is provided with an annular protruded edge
53
, which is engaged with the cylindrical body
21
. An o-rings
54
is disposed in the cylindrical body
21
. These o rings are susceptible to water leakage which undermines the effectiveness of the ceramic control valve
20
.
A BRIEF SUMMARY OF THE INVENTION
The primary objective of the present invention is to provide a ceramic control valve of the faucet with a water stopping seat which is provided in the periphery thereof with a retaining edge. The water stopping seat is disposed in the cylindrical body of the ceramic control valve such that the retaining edge of the water stopping seat is retained in an annular recess of the cylindrical body.
The features and advantages of the present invention will be 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: 4924903 (1990-05-01), Orlandi
patent: 5082241 (1992-01-01), Orlandi
patent: 5174324 (1992-12-01), Chrysler

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