Patent US4045185A successfully refreshed from Google Patents.
Patent US5223760A successfully refreshed from Google Patents.
US5223760A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Wheel speed sensor for drive axle
Assignee: ArvinMeritor Technology LLC
•
Filing: 1991-11-04
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Granted: 1993-06-29
•
Expires: 2011-11-04
Abstract
Abstract An axially compact rotational sensor adaptable to a drive axle for determining the rotational speed of the differential case which is the average speed of the wheels associated therewith. In a second embodiment dual rotational sensors are incorporated in the drive axle for determining the rotational speed of the differential and one axle shaft permitting calculation of the speed of both axle shafts.
Inventors
- 👤 David E. Peck
- 👤 William D. Martin
- 👤 Glen E. Swanson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 23:03
CPC Classifications
G; G01; G01P; G01P3/00; G01P3/42; G01P3/44; G01P3/48; G01P3/481; G01P3/487; G01P3/443; G01P3/488
Claims Analysis
Total Claims: 39
Claim 1
Independent Claim
189 words
A rotational speed sensor system including a gearing system drivingly engaging first and second axle shafts having a rotatable differential case disposed in a stationary carrier, said differential case including a rotatable axially extending flange member and a normally nonrotatable adjusting ring arranged coaxially of said flange member and arranged to provide axial adjustment of the position of the differential case relative to said carrier, said speed sensor system further comprising; a first rotor element drivingly connected to said flange member and a second rotor element drivingly connected to one of said first and second axle shafts; said adjusting ring including an axial flange extending in a direction axially away from said differential case; a first and second stator element each connected to said adjusting ring axial flange and respectively disposed proximate said first and second rotor elements; first means for generating a first electrical signal indicative of the speed of rotation of said first rotor element relative to said first stator element and second means for generating a second electrical signal indicative of the speed of rotation of said second rotor element relative to said second stator element.
Claim 2
Dependent Claim
189 words
A rotational speed sensor system including a gearing system drivingly engaging first and second axle shafts having a rotatable differential case disposed in a stationary carrier, said differential case including a rotatable axially extending flange member and a normally nonrotatable adjusting ring arranged coaxially of said flange member and arranged to provide axial adjustment of the position of the differential case relative to said carrier, said speed sensor system further comprising; a first rotor element drivingly connected to said flange member and a second rotor element drivingly connected to one of said first and second axle shafts; said adjusting ring including an axial flange extending in a direction axially away from said differential case; a first and second stator element each connected to said adjusting ring axial flange and respectively disposed proximate said first and second rotor elements; first means for generating a first electrical signal indicative of the speed of rotation of said first rotor element relative to said first stator element and second means for generating a second electrical signal indicative of the speed of rotation of said second rotor element relative to said second stator element.
Claim 3
Dependent Claim
35 words
The rotational speed sensor system of claim 1 wherein said first and second respective rotor and stator elements form first and second closed magnetic flux paths wherein magnetizable contaminants are not attracted to said sensor.
Claim 4
Dependent Claim
24 words
The rotational speed sensor system of claim 1 wherein said first and said second stator elements are connected to provide a single sensor assembly.
Claim 5
Dependent Claim
26 words
The rotational speed sensor system of claim 1 wherein said second rotor is drivingly connected to an annular member disposed coaxially about said second axle shaft.
Claim 6
Dependent Claim
128 words
A rotational speed sensor including a gearing system having a rotatable differential case disposed in a nonrotatable carrier, said differential case including a first rotatable axially extending flange member and a normally nonrotatable adjusting ring arranged coaxially of said first flange member and arranged to provide axial adjustment of the position of the differential case relative to said carrier; said speed sensor further comprising; a rotor element connected to said first flange member for rotation therewith; said nonrotatable adjusting ring including a second axial flange member extending in a direction axially away from said differential case; a stator element connected to said second axial flange member; and means for generating an electrical signal indicative of the speed of rotation of said rotor element relative to said stator element.
Claim 7
Dependent Claim
128 words
A rotational speed sensor including a gearing system having a rotatable differential case disposed in a nonrotatable carrier, said differential case including a first rotatable axially extending flange member and a normally nonrotatable adjusting ring arranged coaxially of said first flange member and arranged to provide axial adjustment of the position of the differential case relative to said carrier; said speed sensor further comprising; a rotor element connected to said first flange member for rotation therewith; said nonrotatable adjusting ring including a second axial flange member extending in a direction axially away from said differential case; a stator element connected to said second axial flange member; and means for generating an electrical signal indicative of the speed of rotation of said rotor element relative to said stator element.
Claim 8
Dependent Claim
131 words
A rotational speed sensor including a gearing system drivingly engaging an axle shaft having a rotatable differential case disposed in a stationary carrier, said differential case including a first rotatable axially extending flange member and a normally nonrotatable adjusting ring arranged coaxially of said first flange member and arranged to provide axial adjustment of the position of the differential case relative to said carrier, said speed sensor further comprising; a rotor element drivingly connected to said axial shaft; said adjusting ring including a second axial flange member extending outwardly from said differential case; a stator element connected to said second axial flange member and disposed proximate said rotor element; and means for generating an electrical signal indicative of the speed of rotation of said rotor element relative to said stator element.
Claim 9
Dependent Claim
131 words
A rotational speed sensor including a gearing system drivingly engaging an axle shaft having a rotatable differential case disposed in a stationary carrier, said differential case including a first rotatable axially extending flange member and a normally nonrotatable adjusting ring arranged coaxially of said first flange member and arranged to provide axial adjustment of the position of the differential case relative to said carrier, said speed sensor further comprising; a rotor element drivingly connected to said axial shaft; said adjusting ring including a second axial flange member extending outwardly from said differential case; a stator element connected to said second axial flange member and disposed proximate said rotor element; and means for generating an electrical signal indicative of the speed of rotation of said rotor element relative to said stator element.
Claim 10
Dependent Claim
36 words
The invention of claim 4 wherein said rotor element is drivingly connected to said axle shaft by means of friction drive achieved by engaging said rotor element with an elastomeric ring disposed on said axle shaft.
Claim 11
Dependent Claim
22 words
The invention of claim 4 wherein said rotor element is drivingly connected to said axle shaft by means of a tang engagement.
Claim 12
Dependent Claim
24 words
The invention of claim 4 wherein said stator element is connected to said second axial flange member by means of a light press fit.
Claim 13
Dependent Claim
28 words
The invention of claim 4 wherein said second axial flange member extending outwardly from said differential case is formed by extensions of castellations disposed on said adjusting ring.
Claim 14
Dependent Claim
176 words
A rotational speed sensor system including a gearing system drivingly engaging first and second axle shafts having a rotatable differential case disposed in a stationary carrier, said differential case bearingly supported in said stationary carrier, a first and second adjusting ring for retaining and positioning said differential case with respect to said stationary carrier, said speed sensor system further comprising; a first rotor element drivingly connected to said first axle shaft; a second rotor element drivingly connected to said second axle shaft; said first and second adjusting rings include axial flange members extending respectively outwardly from said differential case; first and second stator elements connected respectively to said first and second adjusting rings and disposed proximate respective of said first and second rotor elements; and first means for generating a first electrical signal indicative of the speed of rotation of said first rotor element relative to said first stator element and second means for generating a second electrical signal indicative of the speed of rotation of said second rotor element relative to said second stator element.
Claim 15
Dependent Claim
176 words
A rotational speed sensor system including a gearing system drivingly engaging first and second axle shafts having a rotatable differential case disposed in a stationary carrier, said differential case bearingly supported in said stationary carrier, a first and second adjusting ring for retaining and positioning said differential case with respect to said stationary carrier, said speed sensor system further comprising; a first rotor element drivingly connected to said first axle shaft; a second rotor element drivingly connected to said second axle shaft; said first and second adjusting rings include axial flange members extending respectively outwardly from said differential case; first and second stator elements connected respectively to said first and second adjusting rings and disposed proximate respective of said first and second rotor elements; and first means for generating a first electrical signal indicative of the speed of rotation of said first rotor element relative to said first stator element and second means for generating a second electrical signal indicative of the speed of rotation of said second rotor element relative to said second stator element.
Claim 16
Dependent Claim
21 words
The invention of claim 11 wherein said axial flange members are formed by extensions of castellations disposed on said adjusting ring.
Claim 17
Dependent Claim
167 words
A rotational speed sensor system including a gearing system drivingly engaging first and second axle shafts having a rotatable differential case disposed in a stationary carrier, said differential case including a rotatable axially extending flange member and normally nonrotatable adjusting means arranged coaxially of said flange member to provide axial adjustment of the position of the differential case relative to said carrier, said speed sensor system further comprising a first rotor element drivingly connected to said flange member and a second rotor element drivingly connected to one of said first and second axle shafts; a first and second stator element each connected to said adjusting means and respectively disposed proximate said first and second rotor elements; first means for generating a first electrical signal indicative of the speed of rotation of said first rotor element relative to said first stator element and second means for generating a second electrical signal indicative of the speed of rotation of said second rotor element relative to said second stator element.
Claim 18
Dependent Claim
167 words
A rotational speed sensor system including a gearing system drivingly engaging first and second axle shafts having a rotatable differential case disposed in a stationary carrier, said differential case including a rotatable axially extending flange member and normally nonrotatable adjusting means arranged coaxially of said flange member to provide axial adjustment of the position of the differential case relative to said carrier, said speed sensor system further comprising a first rotor element drivingly connected to said flange member and a second rotor element drivingly connected to one of said first and second axle shafts; a first and second stator element each connected to said adjusting means and respectively disposed proximate said first and second rotor elements; first means for generating a first electrical signal indicative of the speed of rotation of said first rotor element relative to said first stator element and second means for generating a second electrical signal indicative of the speed of rotation of said second rotor element relative to said second stator element.
Claim 19
Dependent Claim
35 words
The rotational speed sensor system of claim 13 wherein said first and second respective rotor and stator elements form first and second closed magnetic flux paths wherein magnetizable contaminants are not attracted to said sensor.
Claim 20
Dependent Claim
24 words
The rotational speed sensor system of claim 13 wherein said first and said second stator elements are connected to provide a single sensor assembly.
Claim 21
Dependent Claim
30 words
The rotational speed sensor system of claim 13 wherein said second rotor is drivingly connected to an annular member disposed coaxially about one of said first and second axle shafts.
Claim 22
Dependent Claim
30 words
The rotational speed sensor system of claim 13 wherein said first and second stator elements are annular in shape and are coaxially arranged around said first and second rotor elements.
Claim 23
Dependent Claim
28 words
The rotational speed sensor system of claim 13, said adjusting means including an adjusting ring, and said first and second stator elements being retained by said adjusting ring.
Claim 24
Dependent Claim
109 words
A rotational speed sensor including a gearing system having a rotatable differential case disposed in a nonrotatable carrier, said differential case including a rotatable axially extending flange member and normally nonrotatable adjusting means arranged coaxially of said flange member and arranged to provide axial adjustment of the position of the differential case relative to said carrier; said speed sensor further comprising a rotor element connected to said flange member for rotation therewith, a stator element connected to said adjusting means and disposed proximate to said rotor element, and means for generating an electrical signal indicative of the speed of rotation of said rotor element relative to said stator element.
Claim 25
Dependent Claim
109 words
A rotational speed sensor including a gearing system having a rotatable differential case disposed in a nonrotatable carrier, said differential case including a rotatable axially extending flange member and normally nonrotatable adjusting means arranged coaxially of said flange member and arranged to provide axial adjustment of the position of the differential case relative to said carrier; said speed sensor further comprising a rotor element connected to said flange member for rotation therewith, a stator element connected to said adjusting means and disposed proximate to said rotor element, and means for generating an electrical signal indicative of the speed of rotation of said rotor element relative to said stator element.
Claim 26
Dependent Claim
23 words
The rotational speed sensor of claim 19, wherein said stator element is annular in shape and is coaxially arranged around said rotor element.
Claim 27
Dependent Claim
24 words
The rotational speed sensor of claim 19, said adjusting means including an adjusting ring and said stator element being retained by said adjusting ring.
Claim 28
Dependent Claim
99 words
A rotational speed sensor including a gearing system drivingly engaging an axle shaft and having a rotatable differential case disposed in a stationary carrier, normally nonrotatable adjusting means arranged coaxially of said axle shaft to provide axial adjustment of the position of the differential case relative to said carrier, said speed sensor further comprising a rotor element drivingly connected to said axle shaft, a stator element connected to said adjusting means and disposed proximate said rotor element, and means for generating an electrical signal indicative of the speed of rotation of said rotor element relative to said stator element.
Claim 29
Dependent Claim
99 words
A rotational speed sensor including a gearing system drivingly engaging an axle shaft and having a rotatable differential case disposed in a stationary carrier, normally nonrotatable adjusting means arranged coaxially of said axle shaft to provide axial adjustment of the position of the differential case relative to said carrier, said speed sensor further comprising a rotor element drivingly connected to said axle shaft, a stator element connected to said adjusting means and disposed proximate said rotor element, and means for generating an electrical signal indicative of the speed of rotation of said rotor element relative to said stator element.
Claim 30
Dependent Claim
37 words
The rotational speed sensor of claim 22 wherein said rotor element is drivingly connected to said axle shaft by means of friction drive achieved by engaging said rotor with an elastomeric ring disposed on said axle shaft.
Claim 31
Dependent Claim
24 words
The rotational speed sensor of claim 22 wherein said rotor element is drivingly connected to said axle shaft by means of a tang engagement.
Claim 32
Dependent Claim
24 words
The rotational speed sensor of claim 22, said adjusting means including an adjusting ring and said stator element being retained by said adjusting ring.
Claim 33
Dependent Claim
25 words
The rotational speed sensor of claim 25, wherein said adjusting ring includes an axially extending flange and said stator element is mounted within said flange.
Claim 34
Dependent Claim
23 words
The rotational speed sensor of claim 22, wherein said stator element is annular in shape and is coaxially arranged around said rotor element.
Claim 35
Dependent Claim
157 words
A rotational speed sensor system including a gearing system drivingly engaging first and second axle shafts and having a rotatable differential case disposed in a stationary carrier, said differential case bearingly supported in said stationary carrier, first and second adjusting means for positioning and retaining said differential case with respect to said stationary carrier, said speed sensor system further comprising: a first rotor element drivingly connected to said first axle shaft; a second rotor element drivingly connected to said second axle shaft; first and second stator elements connected respectively to said first and second adjusting means and respectively disposed proximate said first and second rotor elements; and first means for generating a first electrical signal indicative of the speed of rotation of said first rotor element relative to said first stator element and second means for generating a second electrical signal indicative of the speed of rotation of said second rotor element relative to second stator element.
Claim 36
Dependent Claim
157 words
A rotational speed sensor system including a gearing system drivingly engaging first and second axle shafts and having a rotatable differential case disposed in a stationary carrier, said differential case bearingly supported in said stationary carrier, first and second adjusting means for positioning and retaining said differential case with respect to said stationary carrier, said speed sensor system further comprising: a first rotor element drivingly connected to said first axle shaft; a second rotor element drivingly connected to said second axle shaft; first and second stator elements connected respectively to said first and second adjusting means and respectively disposed proximate said first and second rotor elements; and first means for generating a first electrical signal indicative of the speed of rotation of said first rotor element relative to said first stator element and second means for generating a second electrical signal indicative of the speed of rotation of said second rotor element relative to second stator element.
Claim 37
Dependent Claim
30 words
The rotational speed sensor of claim 28, wherein each of said adjusting means includes an adjusting ring and each of said stator elements is retained by its respective adjusting ring.
Claim 38
Dependent Claim
30 words
The rotational speed sensor of claim 29, wherein each adjusting ring includes an axially extending flange and each stator element is mounted within the flange of its respective adjusting ring.
Claim 39
Dependent Claim
23 words
The rotational speed sensor of claim 28, wherein said stator elements are annular in shape and are coaxially arranged around said rotor elements.
References Cited (Backward Citations)
US3500091A
Cited
US3515920A
Cited
US3551712A
Cited
US3489935A
Cited
US3541368A
Cited
US3549925A
Cited
US3571640A
Cited
US3604966A
Cited
US3745392A
Cited
US3652886A
Cited
US3626226A
Cited
US3649859A
Cited
US3710158A
Cited
GB1381501A
Cited
US3947712A
Cited
US3772550A
Cited
US3826933A
Cited
US3786336A
Cited
US3772549A
Cited
US3769533A
Cited
US3916234A
Cited
US3936684A
Cited
US3887046A
Cited
US4492906A
Cited
US4785242A
Cited
US4862025A
Cited
US4862028A
Cited
US4953670A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1996-06-28 | 1996-12-28 | 1997-06-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2000-06-28 | 2000-12-28 | 2001-06-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2004-06-28 | 2004-12-28 | 2005-06-29 | $7700.00 | Window Closed / Lapsed |