US3870075A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Mixer taps
Assignee: Polypipe Terrain Ltd
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Filing: 1973-06-01
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Granted: 1975-03-11
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Expires: 1993-06-01
Abstract
Abstract A mixer tap of the kind comprising a pair of manually operable valve units controlling two flows of fluid to a common outlet spout. A central body unit receives the outlet spout and has two fluid feed ducts, each of which is connected to the outlet of a respective valve unit through a spigot and socket connection. Preferably the body unit and the valve outlets are of plastics material.
Inventors
- 👤 Eric R Percival
- 👤 Robert W Parker
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 10:52
CPC Classifications
F; F16; F16K; F16K27/00; F16K27/02; F16K27/0263; Y; Y10; Y10T; Y10T137/00; Y10T137/8593; Y10T137/87571; Y10T137/87676; Y10T137/87684
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
180 words
A mixer tap comprising: a. a pair of manually operable valve units each having an inlet and outlet duct; b. a central body unit formed as a one piece moulding and provided with; i. two fluid feed ducts each of which is connected to the outlet duct of one of said valve units through a spigot amd socket connection; and ii. a central boss portion defining respective extension ducts to said fluid feed ducts substantially at right angles thereto, one said extension duct extending from an open end centrally into the boss portion and the other extension duct being of trough form partially surrounding said first extension duct and being defined between inner and outer walls of the boss portion, the inner wall of which defines said first extension duct and the outer wall of which is higher than said inner wall, and c. an outlet spout having co-axial ducts connected with said extension ducts respectively, the outlet spout sealingly engaging with said inner and outer walls of the boss portion to close the trough constituting said other extension duct.
Claim 2
Dependent Claim
180 words
A mixer tap comprising: a. a pair of manually operable valve units each having an inlet and outlet duct; b. a central body unit formed as a one piece moulding and provided with; i. two fluid feed ducts each of which is connected to the outlet duct of one of said valve units through a spigot amd socket connection; and ii. a central boss portion defining respective extension ducts to said fluid feed ducts substantially at right angles thereto, one said extension duct extending from an open end centrally into the boss portion and the other extension duct being of trough form partially surrounding said first extension duct and being defined between inner and outer walls of the boss portion, the inner wall of which defines said first extension duct and the outer wall of which is higher than said inner wall, and c. an outlet spout having co-axial ducts connected with said extension ducts respectively, the outlet spout sealingly engaging with said inner and outer walls of the boss portion to close the trough constituting said other extension duct.
Claim 3
Dependent Claim
180 words
A mixer tap comprising: a. a pair of manually operable valve units each having an inlet and outlet duct; b. a central body unit formed as a one piece moulding and provided with; i. two fluid feed ducts each of which is connected to the outlet duct of one of said valve units through a spigot amd socket connection; and ii. a central boss portion defining respective extension ducts to said fluid feed ducts substantially at right angles thereto, one said extension duct extending from an open end centrally into the boss portion and the other extension duct being of trough form partially surrounding said first extension duct and being defined between inner and outer walls of the boss portion, the inner wall of which defines said first extension duct and the outer wall of which is higher than said inner wall, and c. an outlet spout having co-axial ducts connected with said extension ducts respectively, the outlet spout sealingly engaging with said inner and outer walls of the boss portion to close the trough constituting said other extension duct.
Claim 4
Dependent Claim
180 words
A mixer tap comprising: a. a pair of manually operable valve units each having an inlet and outlet duct; b. a central body unit formed as a one piece moulding and provided with; i. two fluid feed ducts each of which is connected to the outlet duct of one of said valve units through a spigot amd socket connection; and ii. a central boss portion defining respective extension ducts to said fluid feed ducts substantially at right angles thereto, one said extension duct extending from an open end centrally into the boss portion and the other extension duct being of trough form partially surrounding said first extension duct and being defined between inner and outer walls of the boss portion, the inner wall of which defines said first extension duct and the outer wall of which is higher than said inner wall, and c. an outlet spout having co-axial ducts connected with said extension ducts respectively, the outlet spout sealingly engaging with said inner and outer walls of the boss portion to close the trough constituting said other extension duct.
Claim 5
Dependent Claim
31 words
A mixer tap according to claim 1, wherein the body unit and the valve outlets are of plastics material and are bonded or welded together at the spigot and socket connections.
Claim 6
Dependent Claim
43 words
A mixer tap according to claim 2, wherein the body unit and the valve outlets are welded together at the spigot and socket connections by high frequency dielectric heating, a metAl welding ring being located within each of the spigot and socket connections.
Claim 7
Dependent Claim
17 words
A mixer tap according to claim 1, wherein the spigot and socket connections incorporate interengaging lug formations.
Claim 8
Dependent Claim
52 words
A mixer tap according to claim 4, wherein the socket of each spigot and socket connection comprises an annular socket defined by inner and outer concentric walls, the edge of the inner wall being castellated to provide lug formations which cooperate with lugs formed on the inner wall surface of the spigot.
Claim 9
Dependent Claim
36 words
A mixer tap according to claim 1, wherein the outlet spout is held in the body unit by a shroud ring which screws into the boss portion and abuts against a shoulder on the outlet spout.
References Cited (Backward Citations)
US1257785A
Cited
US1916449A
Cited
US2517391A
Cited
US3238346A
Cited
US3229710A
Cited
US3394954A
Cited
US3714958A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-03-10 | 1978-09-09 | 1979-03-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-03-10 | 1982-09-09 | 1983-03-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-03-10 | 1986-09-09 | 1987-03-11 | $7700.00 | Window Closed / Lapsed |