US3371734A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Steering system for endlesstrack vehicles
Assignee: Renk GmbH
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Filing: 1966-09-08
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Granted: 1968-03-05
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Expires: 1986-09-08
Abstract
No abstract record available.
Inventors
- 👤 Zaunberger Franz Xaver
- 👤 Kugler Artur
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 18:39
CPC Classifications
B; B62; B62D; B62D11/00; B62D11/02; B62D11/06; B62D11/10; B62D11/14; B62D11/18; F; F16; F16H; F16H47/00; F16H47/02; F16H47/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
167 words
IN A VEHICLE HAVING A PAIR OF ENDLESS TRACKS, IN COMBINATION, A PAIR OF DRIVE SHAFTS FOR SAID TRACKS; AN ENGINE; A STEERING DEVICE; A MAIN SHAFT COUPLED WITH SAID ENGINE; TRANSMISSION MEANS INCLUDING A PAIR OF DIFFERENTIAL GEAR TRAINS FOR POWERING SAID ENDLESS TRACKS, EACH OF SAID DIFFFERENTIAL GEAR TRAINS BEING PROVIDED WITH A FIRST INPUT CONNECTED TO SAID MAIN SHAFT A SECOND INPUT, AND AN OUTPUT CONNECTED TO THE RESPECTIVE DRIVE SHAFT; TWO CONTROL SHAFTS EACH CONNECTED TO SAID SECOND INPUT OF A RESPECTIVE DIFFERENTIAL GEAR TRAIN; A TORQUE GENERATOR CONNECTED TO SAID CONTROL SHAFTS AND RESPONSIVE TO SAID STEERING DEVICE FOR APPLYING TO SAID CONTROL SHAFTS A REVERSIBLE DIFFERENTIAL TORQUE CONTINUOUSLY VARIABLE IN A RANGE BETWEEN ZERO AND A PREDETERMINED MAXIMUM; A SERVO MECHANISM UNDER THE CONTROL OF SAID STEERING DEVICE; AND ADDITIONAL DRIVE MEANS RESPONSIVE TO SAID SERVO MECHANISM FOR APPLYING TO ONE OF SAID CONTROL SHAFTS A SUPPLEMENTAL TORQUE AIDING SAID DIFFERENTIAL TORQUE AT LEAST IN THE UPPER REGION OF SAID RANGE.
Claim 2
Dependent Claim
167 words
IN A VEHICLE HAVING A PAIR OF ENDLESS TRACKS, IN COMBINATION, A PAIR OF DRIVE SHAFTS FOR SAID TRACKS; AN ENGINE; A STEERING DEVICE; A MAIN SHAFT COUPLED WITH SAID ENGINE; TRANSMISSION MEANS INCLUDING A PAIR OF DIFFERENTIAL GEAR TRAINS FOR POWERING SAID ENDLESS TRACKS, EACH OF SAID DIFFFERENTIAL GEAR TRAINS BEING PROVIDED WITH A FIRST INPUT CONNECTED TO SAID MAIN SHAFT A SECOND INPUT, AND AN OUTPUT CONNECTED TO THE RESPECTIVE DRIVE SHAFT; TWO CONTROL SHAFTS EACH CONNECTED TO SAID SECOND INPUT OF A RESPECTIVE DIFFERENTIAL GEAR TRAIN; A TORQUE GENERATOR CONNECTED TO SAID CONTROL SHAFTS AND RESPONSIVE TO SAID STEERING DEVICE FOR APPLYING TO SAID CONTROL SHAFTS A REVERSIBLE DIFFERENTIAL TORQUE CONTINUOUSLY VARIABLE IN A RANGE BETWEEN ZERO AND A PREDETERMINED MAXIMUM; A SERVO MECHANISM UNDER THE CONTROL OF SAID STEERING DEVICE; AND ADDITIONAL DRIVE MEANS RESPONSIVE TO SAID SERVO MECHANISM FOR APPLYING TO ONE OF SAID CONTROL SHAFTS A SUPPLEMENTAL TORQUE AIDING SAID DIFFERENTIAL TORQUE AT LEAST IN THE UPPER REGION OF SAID RANGE.
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) | 1971-03-05 | 1971-09-04 | 1972-03-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-03-05 | 1975-09-04 | 1976-03-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-03-05 | 1979-09-04 | 1980-03-05 | $7700.00 | Window Closed / Lapsed |