US3175506A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rotating vane type pump
Assignee: Individual
•
Filing: 1961-09-27
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Granted: 1965-03-30
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Expires: 1981-09-27
Abstract
No abstract record available.
Inventors
- 👤 Erdmann Hans
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 12:45
CPC Classifications
F; F04; F04C; F04C2/00; F04C2/30; F04C2/34; F04C2/344; F04C2/3441; F01; F01C; F01C1/00; F01C1/30; F01C1/34; F01C1/344; F03; F03C; F03C2/00; F03C2/30
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
178 words
A VANE-TYPE PUMP, COMPRISING A POT-LIKE CASING WITH INLET AND OUTLET PORTS, AN INTERNAL AND EXTERNAL STEERING DISC, A CAM RING DISPOSED THEREBETWEEN, A SHAFT ROTATABLY JOURNALED IN SAID STEERING DISCS AND EXTENDING BEYOND SAID EXTERNAL DISC, A VANE-TYPE ROTOR FIXEDLY SECURED TO SAID SHAFT AND ROTATABLY JOURNALED IN SAID CAM RING, A SINGLE MEANS TO BOTH CONNECT AND CENTER SAID DISCS AND SAID RING WITH RESPECT TO EACH OTHER THUS FORMING AN INTEGRAL UNIT INDEPENDENTLY MOUNTABLE, SAID UNIT BEING RECEIVED BY SAID CASE, BOLT MEANS TO FASTEN AND SEALING MEANS TO SEAL SAID UNIT IN SAID CASE, A SUCTION CHAMBER AND A PRESSURE CHAMBER BEING DEFINED BETWEEN SAID CASE AND SAID UNIT, SAID INLET PORT COMMUNICATING THROUGH SAID SUCTION CHAMBER WITH THE INTERIOR OF SAID CAM RING AND SAID OUTLET PORT COMMUNICATING THROUGH SAID PRESSURE CHAMBER WITH THE INTERIOR OF SAID CAM RING, AND WHEREIN SAID DISCS AND SAID RING ARE DEFINED BY CYLINDRICAL OUTER SURFACES, SAID SURFACES ALL HAVING THE SAME OUTER DIAMETER AND WHEREIN SAID MEANS TO BOTH CONNECT AND CENTER SAID DISCS AND SAID
Claim 2
Dependent Claim
178 words
A VANE-TYPE PUMP, COMPRISING A POT-LIKE CASING WITH INLET AND OUTLET PORTS, AN INTERNAL AND EXTERNAL STEERING DISC, A CAM RING DISPOSED THEREBETWEEN, A SHAFT ROTATABLY JOURNALED IN SAID STEERING DISCS AND EXTENDING BEYOND SAID EXTERNAL DISC, A VANE-TYPE ROTOR FIXEDLY SECURED TO SAID SHAFT AND ROTATABLY JOURNALED IN SAID CAM RING, A SINGLE MEANS TO BOTH CONNECT AND CENTER SAID DISCS AND SAID RING WITH RESPECT TO EACH OTHER THUS FORMING AN INTEGRAL UNIT INDEPENDENTLY MOUNTABLE, SAID UNIT BEING RECEIVED BY SAID CASE, BOLT MEANS TO FASTEN AND SEALING MEANS TO SEAL SAID UNIT IN SAID CASE, A SUCTION CHAMBER AND A PRESSURE CHAMBER BEING DEFINED BETWEEN SAID CASE AND SAID UNIT, SAID INLET PORT COMMUNICATING THROUGH SAID SUCTION CHAMBER WITH THE INTERIOR OF SAID CAM RING AND SAID OUTLET PORT COMMUNICATING THROUGH SAID PRESSURE CHAMBER WITH THE INTERIOR OF SAID CAM RING, AND WHEREIN SAID DISCS AND SAID RING ARE DEFINED BY CYLINDRICAL OUTER SURFACES, SAID SURFACES ALL HAVING THE SAME OUTER DIAMETER AND WHEREIN SAID MEANS TO BOTH CONNECT AND CENTER SAID DISCS AND SAID
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-03-29 | 1968-09-28 | 1969-03-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-03-29 | 1972-09-28 | 1973-03-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-03-29 | 1976-09-28 | 1977-03-30 | $7700.00 | Window Closed / Lapsed |