US3140761A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rotary fluid brake means
Assignee: All American Engineering Co
•
Filing: 1962-08-21
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Granted: 1964-07-14
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Expires: 1982-08-21
Abstract
No abstract record available.
Inventors
- 👤 Doolittle Donald Beach
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 08:48
CPC Classifications
F; F16; F16D; F16D57/00; F16D57/02; B; B64; B64F; B64F1/00; B64F1/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
126 words
IN A FLUID BRAKE UNIT INCLUDING A HOUSING WITH VERTICALLY SPACED UPPER AND LOWER STATOR VANES AND A ROTOR THEREIN BETWEEN SAID VANES, A VERTICAL ROTOR SHAFT ON WHICH SAID ROTOR IS MOUNTED, CENTRALLY POSITIONED VERTICALLY SPACED ROTOR BEARINGS, SAID VERTICAL ROTOR SHAFT BEING JOURNALLED TO ROTATE AT EACH END IN SAID BEARINGS, CONTROL MEANS IN THE SPACE BETWEEN SAID VANES TO EFFECT THE K FACTOR OF THE UNIT, SAID CONTROL MEANS COMPRISING FLUID FLOW PATH CHANGING MEANS, SAID CONTROL MEANS EACH INCLUDING A HORIZONTAL PLATE, EACH SAID PLATE BEING SECURED SOLELY TO INFLATABLE MEANS, SAID INFLATABLE MEANS BEING EXPANSIBLE IN THE HOUSING BETWEEN THE STATOR VANES TO VARY DEPTH OF THE SPACE BETWEEN SAID VANES, AND MEANS FOR SELECTIVELY INFLATING AND DEFLATING SAID INFLATABLE MEANS.
Claim 2
Dependent Claim
126 words
IN A FLUID BRAKE UNIT INCLUDING A HOUSING WITH VERTICALLY SPACED UPPER AND LOWER STATOR VANES AND A ROTOR THEREIN BETWEEN SAID VANES, A VERTICAL ROTOR SHAFT ON WHICH SAID ROTOR IS MOUNTED, CENTRALLY POSITIONED VERTICALLY SPACED ROTOR BEARINGS, SAID VERTICAL ROTOR SHAFT BEING JOURNALLED TO ROTATE AT EACH END IN SAID BEARINGS, CONTROL MEANS IN THE SPACE BETWEEN SAID VANES TO EFFECT THE K FACTOR OF THE UNIT, SAID CONTROL MEANS COMPRISING FLUID FLOW PATH CHANGING MEANS, SAID CONTROL MEANS EACH INCLUDING A HORIZONTAL PLATE, EACH SAID PLATE BEING SECURED SOLELY TO INFLATABLE MEANS, SAID INFLATABLE MEANS BEING EXPANSIBLE IN THE HOUSING BETWEEN THE STATOR VANES TO VARY DEPTH OF THE SPACE BETWEEN SAID VANES, AND MEANS FOR SELECTIVELY INFLATING AND DEFLATING SAID INFLATABLE MEANS.
References Cited (Backward Citations)
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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) | 1967-07-14 | 1968-01-13 | 1968-07-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-07-14 | 1972-01-13 | 1972-07-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-07-14 | 1976-01-13 | 1976-07-14 | $7700.00 | Window Closed / Lapsed |