US4086563A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Wheel slippage monitor
Assignee: Dickey John Corp
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Filing: 1975-07-10
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Granted: 1978-04-25
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Expires: 1995-07-10
Abstract
Abstract In plowing or towing of other vehicles or implements with a tractor it generally is desirable to move as fast as is economically feasible. Attempting too high a speed may be self-defeating through wheel slippage of the pulling tractor which may reduce efficiency to an uneconomic level. In accordance with the present invention an electronic signal is provided corresponding to the speed of the driving wheels of a tractor, and another electronic signal is provided corresponding to the ground speed of the tractor. These signals are compared electronically, and a visual readout is provided for the operator of the tractor so that he may know if he is operating within acceptable conditions of efficiency. Both audio and visual warning signals are provided to the tractor driver if slippage exceeds a predetermined maximum, corresponding to a predetermined minimum allowable efficiency.
Inventors
- 👤 Wesley J. Bachman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 12:40
CPC Classifications
B; B60; B60T; B60T8/00; B60T8/17; B60T8/1701; B60T8/1708; G; G01; G01P; G01P3/00; G01P3/42; G01P3/44; G01P3/48; G01P3/481; G01P3/489; G01P3/56; G01P3/60
Claims Analysis
Total Claims: 19
Claim 1
Independent Claim
91 words
A monitor for determining wheel slip for a wheeled vehicle having an engine and at least one driving wheel and being driven by the engine over the ground comprising means providing an electrical signal related to the speed of said engine, means providing an electrical signal related to the ground speed of said vehicle, means connected with both of said signal providing means and including dual ramp integrator means for comparing said signals and providing an electrical output according thereto, and perceptual means connected to and operated by said electrical output.
Claim 2
Dependent Claim
91 words
A monitor for determining wheel slip for a wheeled vehicle having an engine and at least one driving wheel and being driven by the engine over the ground comprising means providing an electrical signal related to the speed of said engine, means providing an electrical signal related to the ground speed of said vehicle, means connected with both of said signal providing means and including dual ramp integrator means for comparing said signals and providing an electrical output according thereto, and perceptual means connected to and operated by said electrical output.
Claim 3
Dependent Claim
42 words
A wheel slip monitor as set forth in claim 1 wherein said comparing means comprises a latch operatively connected with said dual ramp integrator means and receiving said electrical output, and said perceptual means comprises a line display connected with said latch.
Claim 4
Dependent Claim
23 words
A wheel slip monitor as set forth in claim 2 and further including a range display connected to and operated by said latch.
Claim 5
Dependent Claim
28 words
A wheel slip monitor as set forth in claim 1 wherein the dual ramp integrator means comprises a dual ramp generator and a zero crossing detector connected thereto.
Claim 6
Dependent Claim
30 words
A wheel slip monitor as set forth in claim 4 wherein said comparing means further comprises a range indicator detector connected to and operated from said dual ramp integrator means.
Claim 7
Dependent Claim
30 words
A wheel slip monitor as set forth in claim 4 wherein the dual ramp integrator means comprises a shift register means connected to and operated from said zero crossing detector.
Claim 8
Dependent Claim
30 words
A wheel slip monitor as set forth in claim 6 wherein the shift register means comprises parallel outputs, and further including a latch connected to and operated by said outputs.
Claim 9
Dependent Claim
54 words
A wheel slip monitor as set forth in claim 1 which includes a pair of monostable circuits respectively connected to the electrical signal providing means related to engine speed and to ground speed, and a pair of integrator means respectively connected to said pair of monostable circuits and to said dual ramp integrator means.
Claim 10
Dependent Claim
29 words
A wheel slip monitor as set forth in claim 8 wherein the monostable circuit connected to the electrical signal means related to ground speed comprises a variable monostable circuit.
Claim 11
Dependent Claim
23 words
A wheel slip monitor as set forth in claim 8 wherein the integrator means related to engine speed comprises a variable output integrator.
Claim 12
Dependent Claim
23 words
A wheel slip monitor as set forth in claim 9 wherein the integrator means related to engine speed comprises a variable output integrator.
Claim 13
Dependent Claim
28 words
A wheel slip monitor as set forth in claim 8 wherein the dual ramp integrator means comprises a dual ramp generator and a zero crossing detector connected thereto.
Claim 14
Dependent Claim
30 words
A wheel slip monitor as set forth in claim 12 wherein the dual ramp integrator means comprises a shift register means connected to and operated from said zero crossing detector.
Claim 15
Dependent Claim
30 words
A wheel slip monitor as set forth in claim 13 wherein the shift register means comprises parallel outputs, and further including a latch connected to and operated by said outputs.
Claim 16
Dependent Claim
133 words
A monitor for determining drive slippage for a vehicle having an engine and being driven by the engine over the ground and having means providing an electrical signal related to the speed of the engine and means for providing an electrical signal related to ground speed of the vehicle comprising means connected with both of said signal providing means and including dual ramp integrator means for comparing said signals and providing an electrical output according thereto, said dual ramp integrator means comprising a dual ramp generator, switching means for alternately connecting and disconnecting said dual ramp generator with said first and second mentioned signal providing means, and means including a zero crossing detector connected with said dual ramp generator and shift register means connected with the switching means for actuating the switching means.
Claim 17
Dependent Claim
133 words
A monitor for determining drive slippage for a vehicle having an engine and being driven by the engine over the ground and having means providing an electrical signal related to the speed of the engine and means for providing an electrical signal related to ground speed of the vehicle comprising means connected with both of said signal providing means and including dual ramp integrator means for comparing said signals and providing an electrical output according thereto, said dual ramp integrator means comprising a dual ramp generator, switching means for alternately connecting and disconnecting said dual ramp generator with said first and second mentioned signal providing means, and means including a zero crossing detector connected with said dual ramp generator and shift register means connected with the switching means for actuating the switching means.
Claim 18
Dependent Claim
53 words
A monitor as defined in claim 15, which includes latch means connected with said shift register means and operated from said zero crossing detector for providing an electrical output in accordance with any difference between the inputs into the shift register means during positive and negative slopes generated by said dual slope generator.
Claim 19
Dependent Claim
31 words
A monitor as defined in claim 16 further including line display means connected to and operated by said latch means and range display means connected to and operated by said latch.
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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) | 1981-04-24 | 1981-10-24 | 1982-04-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-04-24 | 1985-10-24 | 1986-04-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-04-24 | 1989-10-24 | 1990-04-25 | $7700.00 | Window Closed / Lapsed |