Patent US3211104A successfully refreshed from Google Patents.
US3211104A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pumps
Assignee: Individual
•
Filing: 1963-08-02
•
Granted: 1965-10-12
•
Expires: 1983-08-02
Abstract
No abstract record available.
Inventors
- 👤 Oscar E Rosaen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 15:04
CPC Classifications
F; F04; F04C; F04C2/00; F04C2/30; F04C2/34; F04C2/344; F04C2/3446; F01; F01C; F01C21/00; F01C21/08; F01C21/0809
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
91 words
A ROTARY VANE PUMP COMPRISING (A) A HOUSING PROVIDED WITH A CHAMBER HAVING A PERIPHERAL WALL, (B) ANNULARLY SPACED INLET AND OUTLET PORTS CONNECTED RESPECTIVELY WITH SUCTION AND PRESSURE PORTIONS OF SAID CHAMBER, (C) A ROTOR ROTATABLE IN SAID CHAMBER AND HAVING ANNULARLY SPACED RADIALLY EXTENDING SLOTS, (D) VANES RADIALLY SLIDABLE IN SAID SLOTS AND HAVING OUTER ENDS GUIDED IN RADIAL EXTENSION OF SAID ROTOR, BY SAID PERIPHERAL WALL DURING ROTATION OF SAID ROTOR, (E) MEANS PROVIDING A FULCRUM LINE BETWEEN THE FORWARD FACING PORTION OF SAID VANES AND THE ADJACENT
Claim 2
Dependent Claim
91 words
A ROTARY VANE PUMP COMPRISING (A) A HOUSING PROVIDED WITH A CHAMBER HAVING A PERIPHERAL WALL, (B) ANNULARLY SPACED INLET AND OUTLET PORTS CONNECTED RESPECTIVELY WITH SUCTION AND PRESSURE PORTIONS OF SAID CHAMBER, (C) A ROTOR ROTATABLE IN SAID CHAMBER AND HAVING ANNULARLY SPACED RADIALLY EXTENDING SLOTS, (D) VANES RADIALLY SLIDABLE IN SAID SLOTS AND HAVING OUTER ENDS GUIDED IN RADIAL EXTENSION OF SAID ROTOR, BY SAID PERIPHERAL WALL DURING ROTATION OF SAID ROTOR, (E) MEANS PROVIDING A FULCRUM LINE BETWEEN THE FORWARD FACING PORTION OF SAID VANES AND THE ADJACENT
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) | 1968-10-11 | 1969-04-12 | 1969-10-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-10-11 | 1973-04-12 | 1973-10-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-10-11 | 1977-04-12 | 1977-10-12 | $7700.00 | Window Closed / Lapsed |