US3375972A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pump for a gaseous medium
Assignee: ZEFEX Inc
•
Filing: 1966-08-11
•
Granted: 1968-04-02
•
Expires: 1986-08-11
Abstract
No abstract record available.
Inventors
- 👤 Raufeisen Joseph
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 17:07
CPC Classifications
F; F04; F04B; F04B39/00; F04B39/04; F04B39/041; F04B39/042; F04B27/00; F04B27/04; F04B27/0404; F04B27/0414; F04B39/0005; F04B39/10; F04B39/1073; F04B39/12; F04B39/127; Y; Y10; Y10S; Y10S417/00; Y10S417/01
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
115 words
THE COMBINATION OF A SUPPORT STRUCTURE AND A ROTARY OUTPUT SHAFT MOUNTED THEREON, A CYLINDER HAVING A CYLINDRICAL BODY, MEANS MOUNTING SAID CYLINDER ON SAID STRUCTURE WITH THE AXIS OF THE BODY DISPOSED RADIALLY OF SAID SHAFT, A HEAD HAVING INLET AND OUTLET PORTS AND SECURED TO ONE END OF SAID BODY REMOTE FROM THE SHAFT, AND A VALVE ASSEMBLY MOUNTED AT SAID END OF SAID BODY AND HAVING INLET AND OUTLET VALVES COMMUNICATING RESPECTIVELY WITH SAID INLET AND OUTLET PORTS, A PISTON RECIPROCABLE IN SAID CYLINDER, AND AN ECCENTRIC ROTATABLE WITH SAID SHAFT AND CONNECTED TO SAID PISTON TO RECIPROCATE THE PISTON THROUGH A STROKE EQUAL TO THE THROW OF THE ECCENTRIC DURING ROTA-
Claim 2
Dependent Claim
115 words
THE COMBINATION OF A SUPPORT STRUCTURE AND A ROTARY OUTPUT SHAFT MOUNTED THEREON, A CYLINDER HAVING A CYLINDRICAL BODY, MEANS MOUNTING SAID CYLINDER ON SAID STRUCTURE WITH THE AXIS OF THE BODY DISPOSED RADIALLY OF SAID SHAFT, A HEAD HAVING INLET AND OUTLET PORTS AND SECURED TO ONE END OF SAID BODY REMOTE FROM THE SHAFT, AND A VALVE ASSEMBLY MOUNTED AT SAID END OF SAID BODY AND HAVING INLET AND OUTLET VALVES COMMUNICATING RESPECTIVELY WITH SAID INLET AND OUTLET PORTS, A PISTON RECIPROCABLE IN SAID CYLINDER, AND AN ECCENTRIC ROTATABLE WITH SAID SHAFT AND CONNECTED TO SAID PISTON TO RECIPROCATE THE PISTON THROUGH A STROKE EQUAL TO THE THROW OF THE ECCENTRIC DURING ROTA-
References Cited (Backward Citations)
US3125004A
Cited
US786871A
Cited
US1802281A
Cited
US2293564A
Cited
US2484387A
Cited
US2859912A
Cited
US2817562A
Cited
US2980024A
Cited
US3004810A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-04-02 | 1971-10-02 | 1972-04-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-04-02 | 1975-10-02 | 1976-04-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-04-02 | 1979-10-02 | 1980-04-02 | $7700.00 | Window Closed / Lapsed |