US5086272A
Expired / Lapsed
US
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Apparatus for distinguishing between opposed directions of relative motion of a part having magnetic variations
Assignee: Volkswagen AG
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Filing: 1990-06-12
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Granted: 1992-02-04
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Expires: 2010-06-12
Abstract
Abstract In the embodiments disclosed in the specification, an apparatus for distinguishing between opposed directions of motion of a part having spaced magnetic variations contains an inductive magnetic sensor disposed adjacent to the path of motion of the variations and having portions with different magnetic couplings with the magnetic variations spaced in the direction of motion of the part.
Inventors
- 👤 Uwe Hinrichsen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 16:51
CPC Classifications
G; G01; G01P; G01P3/00; G01P3/42; G01P3/44; G01P3/48; G01P3/481; G01P3/488; G01P13/00; G01P13/02; G01P13/04; G01P13/045
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
99 words
Apparatus for distinguishing between opposed directions of relative motion of a part having magnetic variations comprising magnetic sensor means disposed adjacent to the path of the magnetic variations of the part and having different magnetic couplings with the magnetic variations in the part in the direction of relative motion of the part with respect to the sensor means, wherein the sensor means includes armature means having portions spaced at different distances from the magnetic variations and wherein the portions of the armature means have different dimensions in a direction transverse to the direction of motion of the magnetic variations.
Claim 2
Dependent Claim
99 words
Apparatus for distinguishing between opposed directions of relative motion of a part having magnetic variations comprising magnetic sensor means disposed adjacent to the path of the magnetic variations of the part and having different magnetic couplings with the magnetic variations in the part in the direction of relative motion of the part with respect to the sensor means, wherein the sensor means includes armature means having portions spaced at different distances from the magnetic variations and wherein the portions of the armature means have different dimensions in a direction transverse to the direction of motion of the magnetic variations.
Claim 3
Dependent Claim
27 words
Apparatus according to claim 1 including circuit means for digitizing signals produced by the sensor mean and means for determining the duration ratio of the digitized signals.
Claim 4
Dependent Claim
98 words
Apparatus for distinguishing between opposed directions of relative motion of a part having magnetic variations comprising magnetic sensor means disposed adjacent to the path of the magnetic variation of the part and having different magnetic couplings with the magnetic variations in the part in the direction of relative motion of the part with respect to the sensor means, wherein the sensor means includes armature means having portions spaced at different distances from the magnetic variations, including circuit means responsive to signals produced by the sensor means for determining the amplitude difference of signals generated by the sensor means.
Claim 5
Dependent Claim
98 words
Apparatus for distinguishing between opposed directions of relative motion of a part having magnetic variations comprising magnetic sensor means disposed adjacent to the path of the magnetic variation of the part and having different magnetic couplings with the magnetic variations in the part in the direction of relative motion of the part with respect to the sensor means, wherein the sensor means includes armature means having portions spaced at different distances from the magnetic variations, including circuit means responsive to signals produced by the sensor means for determining the amplitude difference of signals generated by the sensor means.
Claim 6
Dependent Claim
31 words
Apparatus according to claim 3 wherein the circuit means includes means for digitizing the signals supplied by the sensor means and means for determining the duration ratio of the digitized signals.
Claim 7
Dependent Claim
130 words
Apparatus for distinguishing between opposed directions of relative motion of a part having magnetic variations comprising magnetic sensor means disposed adjacent to the path of the magnetic variations of the part and having different magnetic couplings with the magnetic variations in the part in the direction of relative motion of the part with respect to the sensor means, including circuit means responsive to signals produced by the sensor means for determining the amplitude difference of signals generated by the sensor means, wherein the circuit means comprises signal peak memory means having predetermined decay time constants for positive and negative peaks in the output signals from the sensor means, signal addition means for adding signals received from the memory means, and signal comparison means for comparing signals from the addition means.
Claim 8
Dependent Claim
130 words
Apparatus for distinguishing between opposed directions of relative motion of a part having magnetic variations comprising magnetic sensor means disposed adjacent to the path of the magnetic variations of the part and having different magnetic couplings with the magnetic variations in the part in the direction of relative motion of the part with respect to the sensor means, including circuit means responsive to signals produced by the sensor means for determining the amplitude difference of signals generated by the sensor means, wherein the circuit means comprises signal peak memory means having predetermined decay time constants for positive and negative peaks in the output signals from the sensor means, signal addition means for adding signals received from the memory means, and signal comparison means for comparing signals from the addition means.
Claim 9
Dependent Claim
25 words
Apparatus according to claim 5 wherein the comparison means comprises two comparators to which comparison voltages of like absolute value and opposite sign are supplied.
Claim 10
Dependent Claim
86 words
Apparatus for distinguishing between opposed directions of relative motion of a part having magnetic variations comprising magnetic sensor means disposed adjacent to the path of the magnetic variations of the part and having different magnetic couplings with the magnetic variations in the part depending upon the direction of relative motion of the part with respect to the sensor means, said apparatus comprising circuit means which include means for digitizing signals supplied by the sensor means and means for determining the duration ratio of the digitized signals.
Claim 11
Dependent Claim
86 words
Apparatus for distinguishing between opposed directions of relative motion of a part having magnetic variations comprising magnetic sensor means disposed adjacent to the path of the magnetic variations of the part and having different magnetic couplings with the magnetic variations in the part depending upon the direction of relative motion of the part with respect to the sensor means, said apparatus comprising circuit means which include means for digitizing signals supplied by the sensor means and means for determining the duration ratio of the digitized signals.
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) | 1995-02-03 | 1995-08-05 | 1996-02-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1999-02-03 | 1999-08-05 | 2000-02-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2003-02-03 | 2003-08-05 | 2004-02-04 | $7700.00 | Window Closed / Lapsed |