US3700207A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Washer replacement assembly for faucet valves
Assignee: Individual
•
Filing: 1970-07-23
•
Granted: 1972-10-24
•
Expires: 1990-07-23
Abstract
Abstract A nonmetallic washer having a resilient main body and a bifurcated variable thickness shank integral therewith. A frictionless bearing is located at the juncture between the main body and shank, the shank being insertable into the central bore of the faucet valve with the bearing thus between the washer and end of the stem. An auxiliary, resilient spacer held within the slot of the shank provides adaptation of the washer to various size stem bores.
Inventors
- 👤 Joseph E Bartlett
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 15:27
CPC Classifications
F; F16; F16K; F16K1/00; F16K1/32; F16K1/48; F16K1/487
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
114 words
A washer replacement assembly for repairing a valve stem having an internally threaded central bore therein, said assembly comprising: a resilient, nonmetallic washer of solid cylindrical shape; and a resiliently deformable, nonmetallic shank integral with said washer and centrally projecting therefrom, said shank having an unthreaded, cylindrical surface and a longitudinal slot substantially bifurcating the length thereof to provide two legs to be received within said central bore of said valve stem to retain said washer to said stem, in section, each of said legs being in the form of a ring section and pressable together for insertion in said central bore should the diameter thereof be smaller than the diameter of said shank.
Claim 2
Dependent Claim
114 words
A washer replacement assembly for repairing a valve stem having an internally threaded central bore therein, said assembly comprising: a resilient, nonmetallic washer of solid cylindrical shape; and a resiliently deformable, nonmetallic shank integral with said washer and centrally projecting therefrom, said shank having an unthreaded, cylindrical surface and a longitudinal slot substantially bifurcating the length thereof to provide two legs to be received within said central bore of said valve stem to retain said washer to said stem, in section, each of said legs being in the form of a ring section and pressable together for insertion in said central bore should the diameter thereof be smaller than the diameter of said shank.
Claim 3
Dependent Claim
38 words
The assembly as in claim 1 including at least one cylindrical wafer bearing having a circular opening therein of substantially the same diameter as said shank, said bearing being disposed on said shank to mate with said washer.
Claim 4
Dependent Claim
41 words
The assembly as in claim 2, wherein said shank includes a circumferential ridge slightly above said washer, said ridge being of slightly greater diameter than said cylindrical opening in said bearing to retain said bearing in mating engagement with said washer.
Claim 5
Dependent Claim
15 words
The assembly as in claim 2 wherein said bearing is fabricated from a polytetrafluoroethylene polymer.
Claim 6
Dependent Claim
17 words
The assembly as in claim 1 wherein said washer and shank are fabricated from a urethane polymer.
Claim 7
Dependent Claim
23 words
The assembly as in claim 1 including a resilient expander plug disposed between the legs of said shank to provide additional rigidity thereto.
Claim 8
Dependent Claim
38 words
The assembly as in Claim 1 wherein the cross sectional area of said legs of said shank in the form of ring sections being of greater are than the ring section area of said slot bifurcating said legs.
References Cited (Backward Citations)
CA491245A
Cited
US2192322A
Cited
US2452354A
Cited
US2709470A
Cited
US2850759A
Cited
FR1120748A
Cited
US2952439A
Cited
US3137476A
Cited
US3275287A
Cited
US3472481A
Cited
US3411744A
Cited
US3385560A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-10-24 | 1976-04-24 | 1976-10-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-10-24 | 1980-04-24 | 1980-10-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-10-24 | 1984-04-24 | 1984-10-24 | $7700.00 | Window Closed / Lapsed |