Patent US3780346A successfully refreshed from Google Patents.
US3780346A
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Digital anti-spin and anti-slide system for moving vehicles
Assignee: RTX Corp
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Filing: 1972-07-03
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Granted: 1973-12-18
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Expires: 1992-07-03
Abstract
Abstract A magnetic pickup located in close proximity to a gear mounted on a vehicle wheel or axle produces a series of pulses indicative of wheel velocity. A binary up/down counter is set to a preselected binary count, and the wheel velocity pulses are alternatively directed to the up and down inputs of the counter for equivalent intervals of time. Any count remaining in the counter after the up and down counts which differs from the preselected count indicates acceleration or deceleration of the wheel, and the appearance of a binary one in any one of several preselected bits in the counter at the end of a counting cycle cause the application or release of the wheel brakes.
Inventors
- 👤 R Gagnon
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 11:42
CPC Classifications
G; G01; G01P; G01P15/00; G01P15/16; G01P15/165; B; B60; B60T; B60T8/00; B60T8/17; B60T8/171; B60T8/175; B60T8/176; B60T8/1761; B60T8/17613; B60T8/32; B60T8/88; B60T8/885
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
169 words
Apparatus for determining a slide or spin condition of a wheel in a moving vehicle comprising means for generating a series of data pulses having a rate proportional to the rotational velocity of said wheel, a binary counter, means for setting into said counter the binary number equivalent to the decimal number 1032, means for directing said series of data pulses into said counter during first and second time periods, said counter adding the number of said data pulses received during said first time period and subtracting the number of data pulses received during said second time period, the counter containing therein a remainder binary count after said first and second time periods which is indicative of the rate of change of rotational velocity of said wheel during said time periods, means for sampling the binary state of the fourth, fifth, sixth and seventh bits of the remainder count within said counter, and means for generating an output signal when any of the said bits is a binary one.
Claim 2
Dependent Claim
169 words
Apparatus for determining a slide or spin condition of a wheel in a moving vehicle comprising means for generating a series of data pulses having a rate proportional to the rotational velocity of said wheel, a binary counter, means for setting into said counter the binary number equivalent to the decimal number 1032, means for directing said series of data pulses into said counter during first and second time periods, said counter adding the number of said data pulses received during said first time period and subtracting the number of data pulses received during said second time period, the counter containing therein a remainder binary count after said first and second time periods which is indicative of the rate of change of rotational velocity of said wheel during said time periods, means for sampling the binary state of the fourth, fifth, sixth and seventh bits of the remainder count within said counter, and means for generating an output signal when any of the said bits is a binary one.
Claim 3
Dependent Claim
39 words
Apparatus as in claim 1 in which said wheel is mounted on a vehicle which includes brake means for said wheel, said apparatus further including means responsive to said Output signal for causing the release of said brake means.
Claim 4
Dependent Claim
80 words
Apparatus as in claim 1 in which said sampling means includes a storage register connected with said counter, means for transferring to said storage register the binary data contained in the fourth, fifth, sixth and seventh bits of said counter, and a Nand gate receiving from said storage register as inputs thereto the complement of the binary data contained in said storage register, said Nand gate producing said output signal when any of the inputs thereto is a binary zero.
Claim 5
Dependent Claim
90 words
Apparatus as in claim 1 in which said wheel is mounted on a vehicle, means for producing a motion signal when said vehicle is moving, a switching circuit, means for connecting said motion signal to said switching circuit as an input thereto, means for connecting said series of data pulses to said switching circuit as an input thereto, and means including said switching means for producing a warning signal indicative of a malfunction in said apparatus upon noncoincidence of said motion signal and said data pulses in said switching circuit.
Claim 6
Independent Claim
146 words
A method for determining a slide or spin condition of a wheel in a moving vehicle comprising generating a series of data pulses having a rate proportional to the rotational velocity of said wheel, setting into a binary counter a preselected integral binary number other than zero, directing said series of data pulses to said counter during first and second time periods, said data pulses being added in said counter during said first time period and being subtracted in said counter during said second time period, said counter containing a remainder binary count after said first and second time periods, sampling the binary state of selected bits of the remainder count in said counter, and generating an output signal when the binary state of said selected bits in said remainder count is different from the binary state of the same bits in said preselected binary number.
Claim 7
Independent Claim
146 words
A method for determining a slide or spin condition of a wheel in a moving vehicle comprising generating a series of data pulses having a rate proportional to the rotational velocity of said wheel, setting into a binary counter a preselected integral binary number other than zero, directing said series of data pulses to said counter during first and second time periods, said data pulses being added in said counter during said first time period and being subtracted in said counter during said second time period, said counter containing a remainder binary count after said first and second time periods, sampling the binary state of selected bits of the remainder count in said counter, and generating an output signal when the binary state of said selected bits in said remainder count is different from the binary state of the same bits in said preselected binary number.
Claim 8
Dependent Claim
70 words
The method of claim 5 in which said step of setting a binary number into said counter includes the step of setting into said counter the binary equivalent of the decimal number 1032, and in which the step of sampling the binary state of selected bits in the remainder count includes the step of sampling the binary state of the fourth, fifth, sixth and seventh bits of said remainder count.
References Cited (Backward Citations)
US3649871A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-12-17 | 1977-06-18 | 1977-12-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-12-17 | 1981-06-18 | 1981-12-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-12-17 | 1985-06-18 | 1985-12-18 | $7700.00 | Window Closed / Lapsed |