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EP0053033A1
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EP
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Slip indicating system for a four-wheel drive vehicle
Assignee: Subaru Corp
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Filing: 1981-11-24
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Granted: —
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Expires: 2001-11-24
Abstract
Abstract A wheel-slip indicating system for a four-wheel drive vehicle employs speed detectors for detecting the speeds of each of the four wheels (2 - 5). An electric circuit (20) compares the detected speeds of all wheels and turns on at least one of a number of lamps (28, 32) when a difference between the speeds is detected, so that a slipping wheel is indicated.
Inventors
- 👤 Tetsuo Satoh
- 👤 Masaaki Ohgami
- 👤 Shoji Ogata
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-28 06:19
CPC Classifications
B; B60; B60L; B60L3/00; B60L3/10; B60L3/102; G; G01; G01P; G01P3/00; G01P3/42; G01P3/56; G01P3/58
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
85 words
A wheel-slip indicating system for a four-wheel drive vehicle comprising a speed detector (16, 17, 18, 19) for detecting the speed of each wheel (2, 3, 4, 5) individually, means (20) for comparing the speeds detected by the speed detectors (16 - 19) and for producing outputs in accordance with the difference between the speeds, switch units (34 - 37) adapted to be closed by those outputs and indicators (29 - 32) adapted to be operated on closing of the switch units (34 - 37).
Claim 2
Dependent Claim
85 words
A wheel-slip indicating system for a four-wheel drive vehicle comprising a speed detector (16, 17, 18, 19) for detecting the speed of each wheel (2, 3, 4, 5) individually, means (20) for comparing the speeds detected by the speed detectors (16 - 19) and for producing outputs in accordance with the difference between the speeds, switch units (34 - 37) adapted to be closed by those outputs and indicators (29 - 32) adapted to be operated on closing of the switch units (34 - 37).
Claim 3
Dependent Claim
100 words
A slip indicating system for four-wheel drive vehicle in accordance with claim 1, wherein each speed detector (16, 17, 18, 19) comprises a pulse generator (Figure 2) for producing pulses at a rate proportional to the wheel speed, and one said comparing means is provided for each wheel and comprises an integrating circuit (40, 41; 50, 51; 60, 61; 70, 71) for integrating the pulses, and comparators (44 - 46; 54 - 56; 64 - 66; 74 - 76) for comparing the output of each integrating circuit with the outputs of each of the integrating circuits for the other wheels.
References Cited (Backward Citations)
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