Patent US3674048A successfully refreshed from Google Patents.
US3674048A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Mixing valve
Assignee: Masco Corp
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Filing: 1970-04-09
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Granted: 1972-07-04
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Expires: 1990-04-09
Abstract
Abstract A hot and cold water mixing valve having hot and cold water inlet ports controlled by a rotatable valve member to open and close the inlet ports in sequence suitable for use of the valve as a shower valve or the like. An adjustable stop associated with the valve permits the full hot position to be adjusted to prevent scalding. In installations such as apartments, hotels or the like wherein a single system of hot and cold water supply pipes services shower or tub facilities arranged back to back on opposite sides of a common wall containing the supply pipes, a fixed bushing part may be selectively oriented relative to the inlet ports so that in both such installations the valve is rotatable in the same direction of rotation and provides the proper sequence of operation without the necessity of additional cross over piping within the wall.
Inventors
- 👤 Alex Manoogian
- 👤 Eric V Pullen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 10:37
CPC Classifications
F; F16; F16K; F16K11/00; F16K11/02; F16K11/06; F16K11/072; F16K11/074; F16K11/0746; Y; Y10; Y10T; Y10T137/00; Y10T137/5109; Y10T137/5196; Y10T137/8593; Y10T137/86493; Y10T137/86815; Y10T137/86823
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
159 words
A mixing valve comprising a valve body having a bore therein and hot and cold water inlet ports opening into the inner end wall of said bore, a bushing in the outer end of said bore and spaced from said end wall to define a mixing chamber therebetween, a valve disc having an operating stem extending outwardly through and rotatably supported in said bushing, said valve disc being rotatable against said end wall and having circumferentially spaced hot and cold water passages extending therethrough respectively registrable with said hot and cold water inlet ports to permit the flow of water into said mixing chamber, stop means on said bushing and said stem to limit rotation of said valve disc between two limit positions, in one of which positions said valve disc closes both of said inlet ports and upon rotation thereof toward the other position first opens said cold water inlet port and then said hot water inlet port.
Claim 2
Dependent Claim
159 words
A mixing valve comprising a valve body having a bore therein and hot and cold water inlet ports opening into the inner end wall of said bore, a bushing in the outer end of said bore and spaced from said end wall to define a mixing chamber therebetween, a valve disc having an operating stem extending outwardly through and rotatably supported in said bushing, said valve disc being rotatable against said end wall and having circumferentially spaced hot and cold water passages extending therethrough respectively registrable with said hot and cold water inlet ports to permit the flow of water into said mixing chamber, stop means on said bushing and said stem to limit rotation of said valve disc between two limit positions, in one of which positions said valve disc closes both of said inlet ports and upon rotation thereof toward the other position first opens said cold water inlet port and then said hot water inlet port.
Claim 3
Dependent Claim
57 words
A mixing valve according to claim 1 wherein said valve body is provided with an outlet port opening into said end wall of said bore and said valve disc has portions of its periphery of smaller diameter than said bore to provide communication between said mixing chamber and outlet port in all positions of said valve disc.
Claim 4
Dependent Claim
31 words
A mixing valve according to claim 1 wherein said stop means comprises circumferentially spaced abutments on said bushing and a stop member rotatable with said stem and engageable with said abutments.
Claim 5
Dependent Claim
27 words
A mixing valve according to claim 3 wherein said stop member is provided with a pair of radially extending arms engageable with said abutments on said bushing.
Claim 6
Dependent Claim
43 words
A mixing valve according to claim 4 wherein one of said arms is provided with adjustable means engageable with the one of said abutments which defines the full hot position of said valve disc thereby to permit adjustment of said full hot position.
Claim 7
Dependent Claim
37 words
A mixing valve according to claim 1 wherein said other position of said valve disc defines the full hot position thereof, said stop means including a manually adjustable element to permit adjustment of said full hot position.
Claim 8
Dependent Claim
180 words
A mixing valve comprising a valve body having a bore therein and diametrically opposed hot and cold water inlet ports and an outlet port opening into the inner end wall of said bore, a bushing in the outer end of said bore and spaced from said end wall to define a mixing chamber therebetween, said mixing chamber communicating with said outlet port, a valve disc having an operating stem extending outwardly through and rotatably supported in said bushing, said valve disc being rotatable against said end wall and having circumferentially spaced hot and cold water passages extending therethrough respectively registrable with said hot and cold water inlet ports to permit the flow of water into said mixing chamber, stop means on said bushing and a stop member on said stem engageable therewith to limit rotation of said valve disc between two limit positions, in one of which positions said valve disc closes both of said inlet ports and upon rotation thereof toward the other limit position first opens said cold water inlet port and then said hot water inlet port.
Claim 9
Dependent Claim
180 words
A mixing valve comprising a valve body having a bore therein and diametrically opposed hot and cold water inlet ports and an outlet port opening into the inner end wall of said bore, a bushing in the outer end of said bore and spaced from said end wall to define a mixing chamber therebetween, said mixing chamber communicating with said outlet port, a valve disc having an operating stem extending outwardly through and rotatably supported in said bushing, said valve disc being rotatable against said end wall and having circumferentially spaced hot and cold water passages extending therethrough respectively registrable with said hot and cold water inlet ports to permit the flow of water into said mixing chamber, stop means on said bushing and a stop member on said stem engageable therewith to limit rotation of said valve disc between two limit positions, in one of which positions said valve disc closes both of said inlet ports and upon rotation thereof toward the other limit position first opens said cold water inlet port and then said hot water inlet port.
Claim 10
Dependent Claim
36 words
A mixing valve according to claim 7 wherein said bushing and said valve body are provided with cooperating means for mounting said bushing in said valve bore in a selected position relative to said inlet ports.
Claim 11
Dependent Claim
28 words
A mixing valve according to claim 8 wherein said cooperating means permit selective mounting of said bushing in either of two diametrically opposite positions in said valve bore.
Claim 12
Dependent Claim
46 words
A mixing valve according to claim 8 wherein said cooperating means permit mounting of said bushing in either of two positions relative to said inlet ports whereby movement of said valve disc from its closed position will first open a selected one of said inlet ports.
References Cited (Backward Citations)
US3437273A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-07-04 | 1976-01-03 | 1976-07-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-07-04 | 1980-01-03 | 1980-07-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-07-04 | 1984-01-03 | 1984-07-04 | $7700.00 | Window Closed / Lapsed |