US3434691A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Valve
Assignee: CLARK H HAMILTON
•
Filing: 1964-10-12
•
Granted: 1969-03-25
•
Expires: 1984-10-12
Abstract
No abstract record available.
Inventors
- 👤 Clark H Hamilton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 02:30
CPC Classifications
F; F16; F16K; F16K5/00; F16K5/08; F16K5/14; F16K5/16; F16K5/162; F16K5/166; F16K5/02; F16K5/025; F16K5/167
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
91 words
IN A PLUG VALVE MECHANISM FOR CONTROLLING THE FLOW OF FLUID: (A) A BODY OF PLASTIC MATERIAL, SAID BODY HAVING AN INWARDLY TAPERED RECESS AND FLUID FLOW PASSAGES CONNECTED THEREWITH; (B) A RIGID HOUSING ON AT LEAST A PORTION OF SAID BODY COMPRESSIVELY RESTRAINING SAID BODY; (C) A PLASTIC TAPERED PLUG VALVE MEMBER OPERABLY DISPOSED IN SAID RECESS FOR ROTATION THEREIN, SAID PLUG VALVE MEMBER HAVING PASSAGE MEANS MOVABLE INTO AND OUT OF COMMUNICATION WITH THE BODY PASSAGES; (D) AND RESILIENT MEANS FOR URGING SAID VALVE MEMBER INWARD IN SAID RECESS.
Claim 2
Dependent Claim
91 words
IN A PLUG VALVE MECHANISM FOR CONTROLLING THE FLOW OF FLUID: (A) A BODY OF PLASTIC MATERIAL, SAID BODY HAVING AN INWARDLY TAPERED RECESS AND FLUID FLOW PASSAGES CONNECTED THEREWITH; (B) A RIGID HOUSING ON AT LEAST A PORTION OF SAID BODY COMPRESSIVELY RESTRAINING SAID BODY; (C) A PLASTIC TAPERED PLUG VALVE MEMBER OPERABLY DISPOSED IN SAID RECESS FOR ROTATION THEREIN, SAID PLUG VALVE MEMBER HAVING PASSAGE MEANS MOVABLE INTO AND OUT OF COMMUNICATION WITH THE BODY PASSAGES; (D) AND RESILIENT MEANS FOR URGING SAID VALVE MEMBER INWARD IN SAID RECESS.
References Cited (Backward Citations)
FR1064281A
Cited
US2950081A
Cited
US2889733A
Cited
US2926884A
Cited
US2925625A
Cited
US3192943A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-03-24 | 1972-09-23 | 1973-03-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-03-24 | 1976-09-23 | 1977-03-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-03-24 | 1980-09-23 | 1981-03-25 | $7700.00 | Window Closed / Lapsed |