US5004358A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Device enabling the revolutionary speed to be measured between two parts in relative rotation such as the supports of a vehicle wheel
Assignee: SKF Industrie SpA
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Filing: 1990-04-09
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Granted: 1991-04-02
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Expires: 2010-04-09
Abstract
Abstract A device enabling the revolutionary speed to be measured between two parts in relative rotation such as the supports of a vehicle wheel and in particular between rings of a rolling bearing for the support of a vehicle wheel, including a first shield integral with the rotating ring of the rolling bearing carrying a magnetized ring with a pair of alternate poles, which is placed in front of, in operation, a passive sensor borne by a second shield attached to the fixed ring of the bearing; the sensor is inductive and has n polar pieces in a number proportional to the pairs of alternate poles of the magnetized ring; the configurations of shields and sensor are such that the elements measuring the relative speed are integral with the shields and protected outwards.
Inventors
- 👤 Angelo Varvello
- 👤 Angelo Vignotto
- 👤 Roberto Moretti
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 04:12
CPC Classifications
F; F16; F16C; F16C41/00; F16C41/007; F16C33/00; F16C33/72; F16C33/76; F16C33/78; F16C33/784; F16C33/7859; F16C33/7869; F16C33/7879; F16C33/80; F16C33/805; G; G01; G01P; G01P3/00; G01P3/42; G01P3/44; G01P3/443; F16C19/00; F16C19/02; F16C19/14; F16C19/18; F16C19/181; F16C19/183; F16C19/184; F16C2326/00; F16C2326/01; F16C2326/02
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
130 words
Device enabling the speed to be measured between two parts in relative rotation such as the supports of a vehicle wheel and in particular between rings of a rolling bearing for the support of a vehicle wheel, characterized by the fact that first shield integral with a rotating ring of the bearing carries a magnetized ring with pairs of alternate poles, which is placed in front of, in operation, a passive sensor borne by a second shield attached to the fixed ring of the bearing; the sensor being inductive with n pole pieces in a number proportional to the pairs of alternate poles of the magnetized ring; the configurations of shields and sensor being such that the elements measuring the relative speed are integral with the shields and protected outwards.
Claim 2
Dependent Claim
130 words
Device enabling the speed to be measured between two parts in relative rotation such as the supports of a vehicle wheel and in particular between rings of a rolling bearing for the support of a vehicle wheel, characterized by the fact that first shield integral with a rotating ring of the bearing carries a magnetized ring with pairs of alternate poles, which is placed in front of, in operation, a passive sensor borne by a second shield attached to the fixed ring of the bearing; the sensor being inductive with n pole pieces in a number proportional to the pairs of alternate poles of the magnetized ring; the configurations of shields and sensor being such that the elements measuring the relative speed are integral with the shields and protected outwards.
Claim 3
Dependent Claim
54 words
Device as per claim 1 characterized by the fact that the sensor consists of a ring having inner and/or outer appendices perpendicular to the surface of the ring, closing pole pieces as to such rotary magnetized ring with pairs of alternate poles and by a measurement coil wound inside the ring between the appendices.
Claim 4
Dependent Claim
46 words
Device as per claim 2 characterized by the fact that the sensor ring is supported by a block fixed to the ends of the shield of the stationary bearing ring or to the ring itself, from which a cable or a connector reaches the signal-processing appliance.
Claim 5
Dependent Claim
22 words
Device as per claim 2 characterized by the fact that the sensor ring is integral with the stationary ring of the bearing.
Claim 6
Dependent Claim
53 words
Device as per claim 1 characterized by the fact that the sensor consists of a ring having radial inner or outer appendices equally spaced, closing the pole pieces as to such rotating magnetized ring with pairs of alternate poles; between the alternate pairs of adjacent appendices being realized windings forming the measurement system.
Claim 7
Dependent Claim
46 words
Device as per claim 5 characterized by the fact that the sensor ring is supported by a block fixed to the ends of the shield of the stationary bearing ring or to the ring itself, from which a cable or a connector reaches the signal-processing appliance.
Claim 8
Dependent Claim
22 words
Device as per claim 5 characterized by the fact that the sensor ring is integral with the stationary ring of the bearing.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1994-04-01 | 1994-10-01 | 1995-04-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1998-04-01 | 1998-10-01 | 1999-04-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2002-04-01 | 2002-10-01 | 2003-04-02 | $7700.00 | Window Closed / Lapsed |