US5087879A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Construction for adjustably mounting sensor portion of magnetic rotation sensor and method of adjusting gap between sensor and rotating drum
Assignee: Alps Alpine Co Ltd
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Filing: 1990-09-19
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Granted: 1992-02-11
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Expires: 2010-09-19
Abstract
Abstract A magnetic rotation sensor is disclosed, in which by raising the precision of the size between a first hole for positioning a magnetic rotation drum and second holes for positioning pin guides and at the same time by keeping the outer diameter of the pin guides at a high precision, the gap between the drum described above and a sensor supported by the pin guides can be kept precisely almost without any adjustment.
Inventors
- 👤 Shin Sugifune
- 👤 Hiraku Abe
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 00:50
CPC Classifications
G; G01; G01B; G01B7/00; G01B7/14; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49002; Y10T29/49007
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
149 words
A magnetic rotation sensor comprising: a housing including a planar surface having a first positioning hole and a plurality of second positioning holes disposed adjacent said first positioning hole; a magnetic rotating drum positioned through said first positioning hole formed in said housing; pin guides comprising two cylindrical portions, first cylindrical portions having a first diameter inserted in said second positioning holes formed in said housing and second cylindrical portions having a second diameter; and an MR sensor supported by said second cylindrical portions of said guide pins and located so as to be opposite to a perimeter of said magnetic rotating drum; wherein the interval between said first hole and said second holes is set to form a gap having a predetermined size between said magnetic rotating drum and said magnetic sensor; wherein said second diameter of said second cylindrical portions is selectively adjustable to adjust said gap.
Claim 2
Dependent Claim
149 words
A magnetic rotation sensor comprising: a housing including a planar surface having a first positioning hole and a plurality of second positioning holes disposed adjacent said first positioning hole; a magnetic rotating drum positioned through said first positioning hole formed in said housing; pin guides comprising two cylindrical portions, first cylindrical portions having a first diameter inserted in said second positioning holes formed in said housing and second cylindrical portions having a second diameter; and an MR sensor supported by said second cylindrical portions of said guide pins and located so as to be opposite to a perimeter of said magnetic rotating drum; wherein the interval between said first hole and said second holes is set to form a gap having a predetermined size between said magnetic rotating drum and said magnetic sensor; wherein said second diameter of said second cylindrical portions is selectively adjustable to adjust said gap.
Claim 3
Independent Claim
98 words
A method for fabricating a magnetic rotation sensor comprising: positioning a magnetic rotating drum through a first positioning hole formed in a housing; inserting a plurality of pin guides each pin guide having first and second portions with different diameters in second positioning holes formed in said housing; positioning an MR sensor with said first portions of said pin guides so as to locate said sensor at a perimeter of said magnetic rotating drum; selectively adjusting a gap between said magnetic rotating drum and said sensor by substituting new pin guides having first portions of a different diameter.
Claim 4
Independent Claim
98 words
A method for fabricating a magnetic rotation sensor comprising: positioning a magnetic rotating drum through a first positioning hole formed in a housing; inserting a plurality of pin guides each pin guide having first and second portions with different diameters in second positioning holes formed in said housing; positioning an MR sensor with said first portions of said pin guides so as to locate said sensor at a perimeter of said magnetic rotating drum; selectively adjusting a gap between said magnetic rotating drum and said sensor by substituting new pin guides having first portions of a different diameter.
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) | 1995-02-10 | 1995-08-12 | 1996-02-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1999-02-10 | 1999-08-12 | 2000-02-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2003-02-10 | 2003-08-12 | 2004-02-11 | $7700.00 | Window Closed / Lapsed |