Fluid handling – Systems – Multi-way valve unit
Reexamination Certificate
2001-09-05
2003-06-03
Rivell, John (Department: 3753)
Fluid handling
Systems
Multi-way valve unit
C137S625400, C137S454600
Reexamination Certificate
active
06571826
ABSTRACT:
BACKGROUND OF THE INVENTION
The present invention relates to a ceramic valve in combination with a connection mount. The ceramic valve has a bottom seat with a seal ring disposed on the external periphery thereof. There are two supporting lugs, a cold water inlet tube, a hot water inlet tube and a water outlet extended from the bottom of the bottom seat. Both the cold and hot water inlet tubes have a short extended insertion section and also have a seal ring at their ends respectively. The connection mount and the water outlet conduct are integrally produced. The connection mount has a cold water inlet, a hot water inlet and a water outlet and is provided with an externally threaded journal section at the top thereof. Whereby the assembly of the components can be completed with speed and ease without finely machining insertion grooves, resulting in the saving of production time, labor and cost. No specific orientation must be check in assembly to make the assembly easy and quick.
There are two kinds of prior arts disclosed in
FIGS. 1
,
2
. Referring first to
FIG. 1
, the first prior art includes a control head portion
10
, an engagement retainer
20
, a ceramic valve
30
, a connection mount
40
and a water outlet conduct
50
. The control head portion
10
has a handle
11
. The engagement retainer
20
has an internally threaded section
21
. The ceramic valve
30
has a bottom section
31
having a seal ring
32
disposed therearound. There are two insertion projections
33
, a cold water inlet flange
34
, a hot water inlet flange
35
and a water outlet
36
extended from the underside of the bottom section
31
. The connection mount
40
has two insertion recesses
41
, a cold water inlet hole
42
, a hot water inlet hole
43
and a water outlet hole
44
and an externally threaded flange
45
. In assembly, the engagement retainer
20
is first engaged with the control head portion
10
and then the ceramic valve
30
is housed in the engagement retainer
20
with the two insertion projections
33
thereof are correctly oriented and inserted into the two insertion recesses
41
. Accordingly, the cold, hot water inlet flanges
34
,
35
of the ceramic valve
30
are in alignment and engagement with the cold, hot water inlet holes
42
,
43
respectively. The externally threaded flange
45
is in locking engagement with the internally threaded section
21
of the engagement retainer
20
, and the connection mount
40
is placed into the water outlet conduct
50
to complete the assembly.
Referring to
FIG. 2
, the second prior art mainly includes a control head portion
10
, an engagement retainer
20
, a ceramic valve
30
, a connection mount
40
and a water outlet conduct
50
. The control head portion
10
has a handle
11
. The engagement retainer
20
has an internally threaded section
21
. The ceramic valve
30
has a bottom section
31
having a seal ring
32
disposed therearound. There are two supporting projections
33
, a cold water inlet tube
37
, a hot water inlet tube
38
and a water outlet
36
extended from the underside of the bottom section
31
. Each supporting projections
33
has an insertion leg
331
. The cold, hot water inlet tubes
37
,
38
are provided with a seal ring
39
respectively. The connection mount
40
and the water outlet conduct
50
are integrally formed. The connection mount
40
has two insertion recesses
41
, a cold water inlet hole
42
, a hot water inlet hole
43
and a water outlet hole
44
and an externally threaded flange
45
. In assembly, the engagement retainer
20
is first engaged with the control head portion
10
and then the ceramic valve
30
is housed in the engagement retainer
20
with the two insertion legs
331
of the supporting projections
33
thereof are correctly oriented and inserted into the two insertion recesses
41
. Accordingly, the cold, hot water inlet tubes
37
,
38
of the ceramic valve
30
are in alignment and engagement with the cold, hot water inlet holes
42
,
43
respectively. The externally threaded flange
45
is in locking engagement with the internally threaded section
21
of the engagement retainer
20
to complete the assembly.
In both the above described two prior art structures, the connection mount
40
has to be finely machined of its insertion recesses
41
after casting so as to permit the engagement of the supporting projections
33
and the insertion legs
331
with the recesses when the cold, hot water inlet holes
42
,
43
of the connection mount
40
are in alignment and engagement with the cold, hot water inlet flanges
34
,
35
(or the cold, hot water inlet tubes
37
,
38
). In assembly, the cold, hot water inlet flanges
34
,
35
or the cold, hot water inlet tubes
37
,
38
have to be aligned and engaged with the cold, hot water inlet holes
42
,
43
; and the supporting projections
33
or the insertion legs
331
of the ceramic valve
30
must be oriented to engage with the insertion recesses
41
of the connection mount
40
. Such alignment and engagement are not ready and relatively tedious.
SUMMARY OF THE INVENTION
Therefore, the primary object of the present invention is to provide a ceramic valve in combination with a connection mount for a single outlet faucet which is not finely processed of its insertion groove after the casting of the connection mount, resulting in reduction of production time and integral cost.
Another object of the present invention is to provide a ceramic valve in combination with a connection mount for a single outlet faucet wherein no specific orientation must be checked in assembly and only the insertion pins of the hot and cold water inlet tubes are directly planted in the cold and hot water inlet holes to complete the assembly with speed and facility.
REFERENCES:
patent: 4513781 (1985-04-01), Nikolayczik
patent: 4733694 (1988-03-01), Knapp
patent: 4942902 (1990-07-01), Knapp
patent: 4979539 (1990-12-01), Rohr
patent: 5320129 (1994-06-01), Bosio
patent: 5368071 (1994-11-01), Hsieh
patent: 5404911 (1995-04-01), Tres Casas
patent: 6029690 (2000-02-01), Weineland et al.
patent: 6394133 (2002-05-01), Knapp
Chung Cheng Faucet Co. Ltd.
Rivell John
Troxell Law Offices PLLC
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