US3595474A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hot and cold water mixing valves
Assignee: Grohe Water Technology AG and Co KG
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Filing: 1969-09-26
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Granted: 1971-07-27
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Expires: 1989-09-26
Abstract
Abstract A mixing valve for controlling the flow of hot and cold fluids with temperature controlled through thermostatic means. The fluid lines connecting to the valve contain within the valve connections, sleeve members having passages displaced from each other. These passages are fully closeable and fully openable through 90* of rotation of the sleeve member. The sleeve member is, furthermore, provided with a check valve and filter, and a hollow insert member on the check valve is operatively coupled to the sleeve member. When the hollow insert member is rotated, the sleeve member is rotated therewith, so that the hollow insert member is fully removable and insertable from and into the sleeve member when the latter is in fully closed position.
Inventors
- 👤 Jurgen Humpert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 10:43
CPC Classifications
G; G05; G05D; G05D23/00; G05D23/01; G05D23/13; G05D23/1306; G05D23/132; G05D23/134; G05D23/1346; F; F16; F16K; F16K11/00; F16K11/02; Y; Y10; Y10T; Y10T137/00; Y10T137/7504; Y10T137/8593; Y10T137/87917; Y10T137/88022; Y10T137/8803
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
126 words
A mixing valve for mixing hot and cold fluids comprising, in combination, a valve housing; thermostatic means within said housing for regulating the temperature of said fluid; fluid line connecting means on said housing for transmitting said fluids to the interior of said housing; sleeve means in said fluid line connecting means and having passages fully closeable and fully openable through substantially 90* of rotation of said sleeve means; check valve means with filter in said sleeve means; and a hollow insert member on said check valve means and operatively coupled to said sleeve means so that said sleeve means rotates with said insert member, said insert member being removable and insertable from and into said sleeve means when said sleeve is in fully closed position.
Claim 2
Dependent Claim
126 words
A mixing valve for mixing hot and cold fluids comprising, in combination, a valve housing; thermostatic means within said housing for regulating the temperature of said fluid; fluid line connecting means on said housing for transmitting said fluids to the interior of said housing; sleeve means in said fluid line connecting means and having passages fully closeable and fully openable through substantially 90* of rotation of said sleeve means; check valve means with filter in said sleeve means; and a hollow insert member on said check valve means and operatively coupled to said sleeve means so that said sleeve means rotates with said insert member, said insert member being removable and insertable from and into said sleeve means when said sleeve is in fully closed position.
Claim 3
Dependent Claim
72 words
The mixing valve as defined in claim 1 wherein said hollow insert member has projecting portions reaching into recesses of said sleeve means for rotating said sleeve means during rotation of said hollow insert member, said hollow insert member having further guide portions within ring-shaped notch at said fluid line connection means, whereby said hollow insert member is insertable and removable only when said sleeve means is in the fully closed position.
Claim 4
Dependent Claim
66 words
The mixing valve as defined in claim 1 wherein said passages in said sleeve means are displaced from each other so that fluid flow is directed from one passage into the other passage through said filter and the interior of said hollow insert member, said sleeve surrounding said hollow insert member and said check valve means being arranged at the base of said hollow insert member.
Claim 5
Dependent Claim
29 words
The mixing valve as defined in claim 1 including O-ring means arranged on both sides of said filter, said filter being a filter sleeve surrounding said hollow insert member.
Claim 6
Dependent Claim
40 words
The mixing valve as defined in claim 1 wherein said check valve means comprises a taper-shaped membrane for pressing against a corresponding taper-shaped perforated base of said hollow insert member; and a securing screw for mounting in place said membrane.
Claim 7
Dependent Claim
16 words
The mixing valve as defined in claim 5 wherein said membrane is a soft rubber membrane.
Claim 8
Dependent Claim
27 words
The mixing valve as defined in claim 1 wherein said hollow insert member comprises two separately fabricated parts assembleD through screw threads and having a cutoff cap.
Claim 9
Dependent Claim
38 words
The mixing valve as defined in claim 1 including a bushing member with passages surrounding said sleeve means and being soldered in corresponding bores within said fluid line connecting means, said sleeve means being a separately fabricated member.
Claim 10
Dependent Claim
39 words
The mixing valve as defined in claim 1 including a spring member surrounding said sleeve means and having a longitudinal slot, said spring member being secured to said sleeve means; and O-ring means spread sealingly through said spring member.
Claim 11
Dependent Claim
38 words
The mixing valve as defined in claim 9 including O-ring means on said sleeve means and forming annular spaces under pressure when said sleeve means is in the fully closed position, said spring member having substantially small passages.
Claim 12
Dependent Claim
31 words
The mixing valve as defined in claim 1 wherein said sleeve means, hollow insert member with check valve means and filter are interchangeable between hot and cold fluid line connecting means.
Claim 13
Dependent Claim
20 words
The mixing valve as defined in claim 1 wherein said hollow insert member has a cutoff flange and actuating means.
Claim 14
Dependent Claim
19 words
The mixing valve as defined in claim 12 wherein said actuating means comprises a coated edge with threaded opening.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-07-26 | 1975-01-25 | 1975-07-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-07-26 | 1979-01-25 | 1979-07-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-07-26 | 1983-01-25 | 1983-07-27 | $7700.00 | Window Closed / Lapsed |