US3245488A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Control arrangement and steering of tractors in tandem
Assignee: Caterpillar Inc
•
Filing: 1964-03-19
•
Granted: 1966-04-12
•
Expires: 1984-03-19
Abstract
No abstract record available.
Inventors
- 👤 Robert A Peterson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 03:45
CPC Classifications
B; B62; B62D; B62D49/00; B62D49/06; B62D49/0621; B62D49/0642; B62D12/00; B62D12/02; B62D55/00; B62D55/06; B62D55/065; B62D55/0655
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
77 words
IN COMBINATION WITH TWO ARTICULATELY CONNECTED TANDEM ARRANGED TRACK-TYPE TRACTORS, FLUID PRESSURE MEANS FOR ACTUATING THE STEERING CLUTCHES AND BRAKES OF BOTH TRACTORS, SAID FLUID PRESSURE MEANS INCLUDING A SOURCE OF FLUID UNDER PRESSURE, A CIRCUIT INCLUDING CONTROL VALVES AT AN OPERATOR''S STATION ON ONE TRACTOR, AND MEANS OPERABLE UPON ACTUATION OF SAID CONTROL VALVES TO RELEASE THE STEERING CLUTCHES OF OPPOSITE HAND ON THE TWO TRACTORS AND SELECTIVELY TO RELEASE EITHER STEERING CLUTCH ON ONE TRACTOR.
Claim 2
Dependent Claim
77 words
IN COMBINATION WITH TWO ARTICULATELY CONNECTED TANDEM ARRANGED TRACK-TYPE TRACTORS, FLUID PRESSURE MEANS FOR ACTUATING THE STEERING CLUTCHES AND BRAKES OF BOTH TRACTORS, SAID FLUID PRESSURE MEANS INCLUDING A SOURCE OF FLUID UNDER PRESSURE, A CIRCUIT INCLUDING CONTROL VALVES AT AN OPERATOR''S STATION ON ONE TRACTOR, AND MEANS OPERABLE UPON ACTUATION OF SAID CONTROL VALVES TO RELEASE THE STEERING CLUTCHES OF OPPOSITE HAND ON THE TWO TRACTORS AND SELECTIVELY TO RELEASE EITHER STEERING CLUTCH ON ONE TRACTOR.
References Cited (Backward Citations)
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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) | 1969-04-11 | 1969-10-11 | 1970-04-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-04-11 | 1973-10-11 | 1974-04-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-04-11 | 1977-10-11 | 1978-04-12 | $7700.00 | Window Closed / Lapsed |