Patent US3251433A successfully refreshed from Google Patents.
US3251433A
Expired / Lapsed
US
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Steering system for wheeled vehicle
Assignee: DROTT Manufacturing CORP
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Filing: 1963-09-30
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Granted: 1966-05-17
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Expires: 1983-09-30
Abstract
No abstract record available.
Inventors
- 👤 Vernon R Hintze
- 👤 Gerald P Lamer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 17:51
CPC Classifications
B; B66; B66C; B66C19/00; B66C19/005; B62; B62D; B62D7/00; B62D7/02; B62D7/06; B62D7/14; B62D7/142
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
173 words
A STEERING SYSTEM FOR A WHEELED VEHICLE HAVING A FRAME INCLUDING SPACED U-SHAPED BRIDGE MEMBERS INTERCONNECTED BY SIDE MEMBERS, TWO WHEELS ROTATABLY MOUNTED ON THE FRAME ON A COMMON FIXED AXIS AND TWO STEERABLE WHEELS MOUNTED ON THE FRAME FOR TURNING ABOUT SUBSTANTIALLY VERTICAL AXES AND BEING SPACED ON A LINE PARALLEL TO AND SPACED FROM THE COMMON FIXED AXIS, THE STEERING SYSTEM COMPRISING A PAIR OF ARMS PIVOTED ON THE FRAME ADJACENT TO THE STEERABLE WHEELS, RESPECTIVELY, AND EXTENDING AT ACUTE ANGLES TO THE FRAME LENGTH IN OPPOSITE DIRECTIONS FROM THEIR PIVOTS, LINKS CONNECTING THE FREE ENDS OF THE ARMS TO THE STEERABLE WHEELS AND JOINING THE ARMS AT ANGLES OTHER THAN RIGHT ANGLES WHEN THE STEERABLE WHEELS ARE IN A STRAIGHT AHEAD POSITION, RESPECTIVELY, TO TURN THE WHEELS AND LINEARLY EXTENSIBLE AND CONTRACTIBLE ACTUATING DEVICES PIVOTED AT ONE END TO THE FRAME AND AT THE OTHER END TO THE ARMS, RESPECTIVELY, AND OPERABLE SIMULTANEOUSLY THROUGH EQUAL DISTANCES IN OPPOSITE DIRECTIONS TO TURN THE WHEELS IN THE SAME DIRECTION THROUGH DIFFERENT ANGLES.
Claim 2
Dependent Claim
173 words
A STEERING SYSTEM FOR A WHEELED VEHICLE HAVING A FRAME INCLUDING SPACED U-SHAPED BRIDGE MEMBERS INTERCONNECTED BY SIDE MEMBERS, TWO WHEELS ROTATABLY MOUNTED ON THE FRAME ON A COMMON FIXED AXIS AND TWO STEERABLE WHEELS MOUNTED ON THE FRAME FOR TURNING ABOUT SUBSTANTIALLY VERTICAL AXES AND BEING SPACED ON A LINE PARALLEL TO AND SPACED FROM THE COMMON FIXED AXIS, THE STEERING SYSTEM COMPRISING A PAIR OF ARMS PIVOTED ON THE FRAME ADJACENT TO THE STEERABLE WHEELS, RESPECTIVELY, AND EXTENDING AT ACUTE ANGLES TO THE FRAME LENGTH IN OPPOSITE DIRECTIONS FROM THEIR PIVOTS, LINKS CONNECTING THE FREE ENDS OF THE ARMS TO THE STEERABLE WHEELS AND JOINING THE ARMS AT ANGLES OTHER THAN RIGHT ANGLES WHEN THE STEERABLE WHEELS ARE IN A STRAIGHT AHEAD POSITION, RESPECTIVELY, TO TURN THE WHEELS AND LINEARLY EXTENSIBLE AND CONTRACTIBLE ACTUATING DEVICES PIVOTED AT ONE END TO THE FRAME AND AT THE OTHER END TO THE ARMS, RESPECTIVELY, AND OPERABLE SIMULTANEOUSLY THROUGH EQUAL DISTANCES IN OPPOSITE DIRECTIONS TO TURN THE WHEELS IN THE SAME DIRECTION THROUGH DIFFERENT ANGLES.
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) | 1969-05-16 | 1969-11-15 | 1970-05-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-05-16 | 1973-11-15 | 1974-05-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-05-16 | 1977-11-15 | 1978-05-17 | $7700.00 | Window Closed / Lapsed |