US3072222A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hydrodynamic brake and method of operating the same
Assignee: JM Voith GmbH
•
Filing: 1960-08-15
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Granted: 1963-01-08
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Expires: 1980-08-15
Abstract
No abstract record available.
Inventors
- 👤 Kugel Fritz
- 👤 Muller Helmut
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 14:12
CPC Classifications
F; F16; F16D; F16D57/00; F16D57/04
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
86 words
THE METHOD OF ELIMINATING AIR TURBULENT LOSSES IN A HYDRODYNAMIC BRAKE WHEN THE BRAKE IS DRIVEN AND IS EMPTY OF HYDRAULIC FLUID AND IS THEREFORE IN A NON-BRAKING CONDITION, SAID BRAKE COMPRISING A BLADED PRIMARY PART CONFINING PRIMARY HYDRAULIC FLUID CHAMBER MEANS AND A BLADED SECONDARY PART CONFINING SECONDARY HYDRAULIC FLUID CHAMBER MEANS, SAID METHOD COMPRISING THE STEPS OF: EMPTYING THE CHAMBER OF HYDRAULIC FLUID AND SUBSTANTIALLY COMPLETELY INTERRUPTING COMMUNICATION BETWEEN SAID CHAMBER MEANS WHEN, AND ONLY WHEN, SAID CHAMBER MEANS ARE EMPTY OF HYDRAULIC FLUID.
References Cited (Backward Citations)
GB190929049A
Cited
US1059837A
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US1249261A
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US1992911A
Cited
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GB734024A
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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) | 1966-01-07 | 1966-07-09 | 1967-01-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-01-07 | 1970-07-09 | 1971-01-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-01-07 | 1974-07-09 | 1975-01-08 | $7700.00 | Window Closed / Lapsed |