Patent US3552714A successfully refreshed from Google Patents.
US3552714A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Torque free valve assembly
Assignee: Manville Manufacturing Corp
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Filing: 1968-05-08
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Granted: 1971-01-05
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Expires: 1988-05-08
Abstract
Abstract A valve housing with a fluid inlet and fluid outlet and a valve seat in a passageway therebetween. A seal mount in the passageway, with a bib-washer thereon to engage the valve seat, and with an O-ring thereon to prevent leakage from the housing along the valve operating stem. A split ring freely received on a groove in the stem and snugly received in a bore on the seal mount for connection therebetween, permitting free-floating seal action and torque-free stem rotation for valve operation.
Inventors
- 👤 Charles J Manville
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 23:12
CPC Classifications
F; F16; F16K; F16K1/00; F16K1/32; F16K1/34; F16K1/36; Y; Y10; Y10T; Y10T137/00; Y10T137/8158; Y10T137/8359
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
122 words
A valve assembly comprising: a valve stem; a stem end member received on said stem and rotatable with respect thereto on the longitudinal axis thereof, a portion of said stem being received in a cylindrical bore in said end member; said stem having a first annular groove therein; a snap ring loosely received in said groove and snugly received in said bore, to retain said end member on said stem while permitting free rotation of said end member on said stem; said stem having a second annular groove therein; and a resilient member received in said second groove and engaging both said stem and said bore to establish a desired amount of resistance to movement of said end member on said stem.
Claim 2
Dependent Claim
122 words
A valve assembly comprising: a valve stem; a stem end member received on said stem and rotatable with respect thereto on the longitudinal axis thereof, a portion of said stem being received in a cylindrical bore in said end member; said stem having a first annular groove therein; a snap ring loosely received in said groove and snugly received in said bore, to retain said end member on said stem while permitting free rotation of said end member on said stem; said stem having a second annular groove therein; and a resilient member received in said second groove and engaging both said stem and said bore to establish a desired amount of resistance to movement of said end member on said stem.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-01-04 | 1974-07-06 | 1975-01-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-01-04 | 1978-07-06 | 1979-01-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-01-04 | 1982-07-06 | 1983-01-05 | $7700.00 | Window Closed / Lapsed |