US5157329A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for sensing rotation having an encoder biased towards a stationary sensor and a member transmitting rotation to the encoder
Assignee: Timken US LLC
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Filing: 1990-10-31
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Granted: 1992-10-20
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Expires: 2010-10-31
Abstract
Abstract An apparatus for sensing rotation of a rotary member comprising a fixed sensor, the sensor being stationary relative to the rotary member. An encoder rotates with the rotary member and is disposed adjacent the sensor. A biasing member for biasing the encoder is in close proximity into the sensor. The sensor may be a Hall effect sensor or a magnetic resistive sensor. The biasing member may be a well known biasing device such as a spring washer, a magnetic device, a hydraulic or pneumatic device.
Inventors
- 👤 Michael C. Brauer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 17:41
CPC Classifications
G; G01; G01P; G01P3/00; G01P3/42; G01P3/44; G01P3/48; G01P3/481; G01P1/00; G01P1/04
Claims Analysis
Total Claims: 17
Claim 1
Independent Claim
67 words
An apparatus for sensing rotation of a rotary member, comprising: a fixed sensor disposed adjacent the rotary member, said sensor being stationary relative to the rotary member; an encoder rotatable with the rotary member, the encoder being disposed adjacent the sensor; biasing means for biasing the encoder into close proximity to the sensor; and transmitting means for transmitting rotation of the rotary member to the biasing means.
Claim 2
Independent Claim
67 words
An apparatus for sensing rotation of a rotary member, comprising: a fixed sensor disposed adjacent the rotary member, said sensor being stationary relative to the rotary member; an encoder rotatable with the rotary member, the encoder being disposed adjacent the sensor; biasing means for biasing the encoder into close proximity to the sensor; and transmitting means for transmitting rotation of the rotary member to the biasing means.
Claim 3
Dependent Claim
26 words
The apparatus as described in claim 1, further comprising: a housing with an encoder support formed therein, the encoder being in contact with the encoder support.
Claim 4
Dependent Claim
22 words
The apparatus as described in claim 2, wherein the sensor is disposed within the housing in close proximity to the encoder support.
Claim 5
Dependent Claim
14 words
The apparatus as described in claim 1, wherein the biasing means is a spring.
Claim 6
Dependent Claim
21 words
The apparatus as described in claim 4, wherein the spring is annular in configuration, being disposed circumferentially to the rotary member.
Claim 7
Dependent Claim
14 words
The apparatus as described in claim 5, wherein the spring is a belleville washer.
Claim 8
Dependent Claim
14 words
The apparatus as described in claim 5, wherein the spring is a wave washer.
Claim 9
Dependent Claim
25 words
The apparatus as described in claim 1, wherein the encoder is an annular encoder which is sensed parallel to the axis of the rotary member.
Claim 10
Dependent Claim
24 words
The apparatus as described in claim 1, wherein the transmitting means further comprises: an intermediate member connecting the rotary member and the biasing means.
Claim 11
Dependent Claim
22 words
The apparatus as described in claim 1, further comprising: connecting means for transmitting rotational motion of the biasing means to the encoder.
Claim 12
Dependent Claim
14 words
The apparatus as described in claim 1, wherein the sensor is a magneto-resistive sensor.
Claim 13
Dependent Claim
15 words
The apparatus as described in claim 1, wherein the sensor is a Hall effect sensor.
Claim 14
Dependent Claim
15 words
The apparatus as described in claim 1, wherein the biasing means is a hydraulic device.
Claim 15
Dependent Claim
15 words
The apparatus as described in claim 1, wherein the biasing means is a pneumatic device.
Claim 16
Dependent Claim
15 words
The apparatus as described in claim 1, wherein the biasing means is an electro-mechanical device.
Claim 17
Dependent Claim
16 words
The apparatus as described in claim 1, wherein the biasing means is a passive magnetic device.
References Cited (Backward Citations)
US3716121A
Cited
US3745392A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1995-10-20 | 1996-04-20 | 1996-10-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1999-10-20 | 2000-04-20 | 2000-10-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2003-10-20 | 2004-04-20 | 2004-10-20 | $7700.00 | Window Closed / Lapsed |