US3801845A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rotational characteristics sensing and signal generating mechanism and a magnetic field interrupter therefor
Assignee: Motors Liquidation Co
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Filing: 1972-07-13
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Granted: 1974-04-02
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Expires: 1992-07-13
Abstract
Abstract A vehicle wheel hub is provided with a frusto-conical end surface having a shoulder adjacent the smaller circumferential side. A magnetic field probe is mounted in radially spaced relation to the frusto-conical surface, and an elastic garter member made of a magnetic field modifying material is positioned on the frusto-conical surface. The garter member has a plurality of raised surfaces which, when rotating with the hub relative to the probe, interrupts the magnetic field sensed by the probe so that signals which reflect the rotational characteristics of the hub are generated in the probe. The signals may be related to hub rotational velocity or hub acceleration characteristics, for example.
Inventors
- 👤 W Gavitt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 23:56
CPC Classifications
G; G01; G01P; G01P3/00; G01P3/42; G01P3/44; G01P3/48; G01P3/481; G01P3/488; B; B60; B60T; B60T8/00; B60T8/32; B60T8/321; B60T8/329; H; H02; H02K; H02K19/00; H02K19/16; H02K19/22; H02K19/24
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
138 words
In combination in a rotational characteristics signal generating mechanism, a rotatable wheel hub having a frusto-conical outer surface formed adjacent one end thereof and an integrally formed shoulder at the smaller diameter peripheral edge of said frusto-conical outer surface, a magnetic field probe mounted with the head thereof spaced radially outward of said frusto-conical outer surface, and an annular frusto-conical magnetic field interrupter formed as a multi-toothed garter member received on said frusto-conical outer surface of said hub immediately adjacent said magnetic field probe head with the interrupter smaller diameter peripheral edge thereof engaging said shoulder, said interrupter being sufficiently elastic to stretch over said shoulder during installation and retract radially to elastically grip said frusto-conical outer surface, said interrupter rotating with said hub and interrupting the magnetic field sensed by said probe in accordance with said rotation.
Claim 2
Dependent Claim
138 words
In combination in a rotational characteristics signal generating mechanism, a rotatable wheel hub having a frusto-conical outer surface formed adjacent one end thereof and an integrally formed shoulder at the smaller diameter peripheral edge of said frusto-conical outer surface, a magnetic field probe mounted with the head thereof spaced radially outward of said frusto-conical outer surface, and an annular frusto-conical magnetic field interrupter formed as a multi-toothed garter member received on said frusto-conical outer surface of said hub immediately adjacent said magnetic field probe head with the interrupter smaller diameter peripheral edge thereof engaging said shoulder, said interrupter being sufficiently elastic to stretch over said shoulder during installation and retract radially to elastically grip said frusto-conical outer surface, said interrupter rotating with said hub and interrupting the magnetic field sensed by said probe in accordance with said rotation.
References Cited (Backward Citations)
US3573520A
Cited
US3551712A
Cited
US3694661A
Cited
US3549925A
Cited
US3626223A
Cited
US3626228A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-04-01 | 1977-10-01 | 1978-04-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-04-01 | 1981-10-01 | 1982-04-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-04-01 | 1985-10-01 | 1986-04-02 | $7700.00 | Window Closed / Lapsed |