Patent US3270838A successfully refreshed from Google Patents.
US3270838A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Control of the brake power of a hydrodynamic brake
Assignee: Rolls Royce Solutions GmbH
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Filing: 1964-02-24
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Granted: 1966-09-06
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Expires: 1984-02-24
Abstract
No abstract record available.
Inventors
- 👤 Schweizer Walter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 20:08
CPC Classifications
F; F16; F16D; F16D57/00; F16D57/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
115 words
A CORE-LESS HYDRODYNAMIC BRAKE COMPRISING: A STATIONARY BLADE RIM WITHOUT A CENTER GUIDE CORE; A MOVABLE BLADE RIM TO BE BRAKED WITHOUT A CENTER GUIDE CORE; SAID BLADE RIMS DEFINING AN ANNULAR FLUID EXCHANGE GAP THEREBETWEEN AND A FLUID CIRCUIT CHAMBER UNOBSTRUCTED IN THE DIRECTION TRANSVERSE TO SAID GAP DUE TO THE ABSENCE OF A CENTER GUIDE CORE; FLUID WITHIN SAID CHAMBER; AND ANNULAR WALL MEANS OPERABLE TO CONTROL THE MOMENT OF THE BRAKE BY MOVING INTO SAID STATIONARY BLADE RIM TO CHANGE THE PROFILE OF THE CIRCUIT CHAMBER INCLUDING THE LOCATION OF THE NEUTRAL FLUID CORE FORMED BY THE CIRCULATION OF SAID FLUID WITHIN SAID CHAMBER AND TO REMOVE SAID FLUID FROM THE CIRCUIT.
Claim 2
Dependent Claim
115 words
A CORE-LESS HYDRODYNAMIC BRAKE COMPRISING: A STATIONARY BLADE RIM WITHOUT A CENTER GUIDE CORE; A MOVABLE BLADE RIM TO BE BRAKED WITHOUT A CENTER GUIDE CORE; SAID BLADE RIMS DEFINING AN ANNULAR FLUID EXCHANGE GAP THEREBETWEEN AND A FLUID CIRCUIT CHAMBER UNOBSTRUCTED IN THE DIRECTION TRANSVERSE TO SAID GAP DUE TO THE ABSENCE OF A CENTER GUIDE CORE; FLUID WITHIN SAID CHAMBER; AND ANNULAR WALL MEANS OPERABLE TO CONTROL THE MOMENT OF THE BRAKE BY MOVING INTO SAID STATIONARY BLADE RIM TO CHANGE THE PROFILE OF THE CIRCUIT CHAMBER INCLUDING THE LOCATION OF THE NEUTRAL FLUID CORE FORMED BY THE CIRCULATION OF SAID FLUID WITHIN SAID CHAMBER AND TO REMOVE SAID FLUID FROM THE CIRCUIT.
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) | 1969-09-05 | 1970-03-07 | 1970-09-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-09-05 | 1974-03-07 | 1974-09-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-09-05 | 1978-03-07 | 1978-09-06 | $7700.00 | Window Closed / Lapsed |