US3269481A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Steering controls for vehicles operating in tandem
Assignee: Caterpillar Inc
•
Filing: 1964-12-02
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Granted: 1966-08-30
•
Expires: 1984-12-02
Abstract
No abstract record available.
Inventors
- 👤 Robert A Peterson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 10:33
CPC Classifications
B; B62; B62D; B62D53/00; B62D53/02; B62D12/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
99 words
IN TANDEM OPERATING EARTHMOVING SCRAPERS WHEREIN A REAR SCRAPER COMPRISES A TRACTOR UNIT ARTICULATELY CONNECTED TO A SCRAPER UNIT AND WHEREIN STEERING MEANS INCLUDES HYDRAULIC JACKS EXTENDING BETWEEN SAID UNITS ON OPPOSITE SIDES AND A STEERING WHEEL CONTROLLING FLOW OF FLUID UNDER PRESSURE TO AND FROM OPPOSITE ENDS OF THE JACKS ON OPPOSSITE SIDES THROUGH A CIRCUIT INCLUDING A PRESSURE SOURCE, THE IMPROVEMENT WHICH COMPRISES MEANS INCLUDING A VALVE IN SAID CIRCUIT TO PROVIDE COMMUNICATION BETWEEN OPPOSITE ENDS OF SAID JACKS ON OPPOSITE SIDES AND FREE ARTICULATION BETWEEN THE TRACTOR AND SCRAPER UNITS INDEPENDENTLY OF THE STEERING WHEEL CONTROL.
Claim 2
Dependent Claim
99 words
IN TANDEM OPERATING EARTHMOVING SCRAPERS WHEREIN A REAR SCRAPER COMPRISES A TRACTOR UNIT ARTICULATELY CONNECTED TO A SCRAPER UNIT AND WHEREIN STEERING MEANS INCLUDES HYDRAULIC JACKS EXTENDING BETWEEN SAID UNITS ON OPPOSITE SIDES AND A STEERING WHEEL CONTROLLING FLOW OF FLUID UNDER PRESSURE TO AND FROM OPPOSITE ENDS OF THE JACKS ON OPPOSSITE SIDES THROUGH A CIRCUIT INCLUDING A PRESSURE SOURCE, THE IMPROVEMENT WHICH COMPRISES MEANS INCLUDING A VALVE IN SAID CIRCUIT TO PROVIDE COMMUNICATION BETWEEN OPPOSITE ENDS OF SAID JACKS ON OPPOSITE SIDES AND FREE ARTICULATION BETWEEN THE TRACTOR AND SCRAPER UNITS INDEPENDENTLY OF THE STEERING WHEEL CONTROL.
References Cited (Backward Citations)
US2762634A
Cited
US3159230A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-08-29 | 1970-02-28 | 1970-08-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-08-29 | 1974-02-28 | 1974-08-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-08-29 | 1978-02-28 | 1978-08-30 | $7700.00 | Window Closed / Lapsed |