US3552765A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hydrodynamic-brake system with heat dissipation from the chassis
Assignee: Continental Teves AG and Co OHG
•
Filing: 1968-09-17
•
Granted: 1971-01-05
•
Expires: 1988-09-17
Abstract
Abstract A HYDRODYNAMIC-BRAKE SYSTEM FOR AN AUTOMOTIVE VEHICLE, ESPECIALLY HEAVY-DUTY TRUCKS, TRAILER-TRACTOR COMBINATIONS, AND SEMITRAILERS IN WHICH THE HYDRODYNAMIC BRAKE CIRCULATES A BRAKING FLUID WHICH IS HEATED IN PROPORTION TO THE DEGREE OF BRAKING OF THE VEHICLE, THE HEAT BEING DISSIPATED BY THE CHASSIS. THE CHASSIS OR VEHICLE FRAME IS PROVIDED WITH DUCTS THROUGH WHICH THE HYDRODYNAMIC-BRAKE SYSTEM CIRCULATES THE BRAKING FLUID TO DISSIPATE THE BRAKING ENERGY IN THE FORM OF HEAT BY INDIRECT HEAT EXCHANGE WITH THE AIR VIA THE THERMALLY CONDUCTIVE CHASSIS OR A PORTION THEREOF.
Inventors
- 👤 Fritz Ostwald
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 10:50
CPC Classifications
F; F16; F16D; F16D65/00; F16D65/78
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-01-04 | 1974-07-06 | 1975-01-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-01-04 | 1978-07-06 | 1979-01-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-01-04 | 1982-07-06 | 1983-01-05 | $7700.00 | Window Closed / Lapsed |