Fluid handling – Self-proportioning or correlating systems – Self-proportioning flow systems
Reexamination Certificate
1999-12-08
2001-07-31
Hepperle, Stephen M. (Department: 3753)
Fluid handling
Self-proportioning or correlating systems
Self-proportioning flow systems
C137S597000
Reexamination Certificate
active
06267134
ABSTRACT:
BACKGROUND OF THE INVENTION
1. Field of the Invention
The present invention relates to a wall mounted mixer valve with pressure balance device, and more particularly, to a mixer valve that prevents the user from being burnt due to pressure drop by cold water without affecting the normal water outlet amount, attracting deposit of sediment nor the complete suspension of water supply.
2. Description of the Prior Art
As illustrated in
FIG. 1
, the prior art of a mixer valve is essentially comprised of a handle
1
, a bonnet
2
, a connection bolt, a control valve, a rose
3
, a cylinder
4
, a mixer valve
5
, a large washer, a spout
6
a
and a shower-bath
6
b
. When assembled, the mixer valve
5
is mounted in the preserved wall openings to be respectively connected to cold water and water inlets and two water outlets, another ends of said two water outlets are respectively connected to the spout
6
a
and the shower-bath
6
b
. The control valve is placed with the mixer valve
5
, and the cylinder
4
is inserted and secured at the outer edge of the mixer valve
5
. The large wash is inserted into the inner edge of the rose
3
, then the rose
3
together with the large washer is secured with two screws to the circumference of the openings preserved on the wall. The front side of the cylinder
4
is made protruding out of the center hole in the rose
3
, then one end of the connection bolt is inserted into and fixed at the terminal of a control valve rod from the control valve. The bonnet
2
is placed in the front side of the central hole in the rose
3
and fixed at the front end of the mixer valve
5
. The handle
1
is placed onto the front side of the bonnet
2
and is secured at the other end of the connection bolt with a screw to operate the control valve in the mixer valve
5
to form an assembly.
The prior art of a mixer valve adjusts for a proper temperature of mixed water supply simply by control and adjustment of the mixing ratio between cold and hot water. However, the average tap user suffers low pressure of water supply as a pressure motor is required to boost the line water pressure, and the water pressure drops suddenly if water closet or tap water is in use at the same time. As a result, there is the reduction of cold water supply while hot water remains its original mixing ratio. Accordingly, the user suffers a sudden surge of the temperature of hot water and may get burnt while taking a shower.
SUMMARY OF THE INVENTION
The primary objective of the present invention is to provide a wall mounted mixer valve provided with a pressure balance device comprised of an outer sleeve, an inner sleeve and a lid. At both LR and RH sides of the walls to said outer and inner sleeves are provided with perforated spacer slots so that both hot and cold water are respectively entering into the lines through said perforated slots before being mixed. Once the pressure of cold water supply drops, a partition provided in the center of the inner sleeve is pushed inward to leave from its symmetrical position by the pressure of hot water. Meanwhile the hot water supply is suspended due to that the perforated spacer slots to the outer sleeve operate in the other direction so to prevent the user from being burnt.
Another objective of the present invention is to provide a wall mounted mixer valve provided with a pressure balance device. Within, the perforated slots to both outer and inner sleeves can effectively interact to prevent deposit of foreign matters to facilitate the water flows directly through partition in the inner sleeve and both outlets of the inner sleeve without affecting the consistent flow of the mixed water.
Another objective yet of the present invention is to provide a wall mounted mixer valve provided with a pressure balance device. Within, both ends of the outer sleeve indicates hollow so that when the water flows from the outer sleeve into the inner sleeve, no sediment will be created and deposited at both ends of the outer sleeve to block the water flow. In turn the force to push against the partition in the inner sleeve will not be impeded, so to ensure of a balanced inner sleeve and the constant mixing ratio of the water flow.
Another objective yet of the present invention is to provide a wall mounted mixer valve provided with a pressure balance device. Within, when the pressure of cold water drops due to that other water outlets in the same piping system are operating, the flow of hot water is moving towards the lid as the inner sleeve is pushed and the perforated slot of the outer sleeve to permit entering of hot water is closed by the inner sleeve. Meanwhile, cold water continues to flow into the outer and inner sleeves to prevent the embarrassment of no water supply at all.
REFERENCES:
patent: 3192939 (1965-07-01), Moen
patent: 5299593 (1994-04-01), Ottelli
patent: 5355906 (1994-10-01), Marty et al.
patent: 5725010 (1998-03-01), Marty et al.
patent: 5740836 (1998-04-01), Tang
patent: 5884653 (1999-03-01), Orlandi
Hepperle Stephen M.
Rosenberg , Klein & Lee
Tai Yi Industrial Co., Ltd.
LandOfFree
Wall mounted mixer valve with pressure balance does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Wall mounted mixer valve with pressure balance, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Wall mounted mixer valve with pressure balance will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2544238