US5880585A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus including a wheel coupled ring shaped magnet, for detecting rotation of a wheel in a two-wheeled vehicle
Assignee: Nippon Seiki Co Ltd
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Filing: 1997-02-27
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Granted: 1999-03-09
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Expires: 2017-02-27
Abstract
Abstract A rotation detector comprising a housing having an inserting portion for inserting a wheel shaft, a magnet, to be coupled to a wheel mounted to the wheel shaft, into which the inserting portion is inserted such that the magnet is rotated in synchronism with the wheel mounted to the wheel shaft, and a magnetic conversion element arranged at a portion of the housing in the proximity of the magnet.
Inventors
- 👤 Yuji Oguro
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 16:08
CPC Classifications
G; G01; G01D; G01D5/00; G01D5/12; G01D11/00; G01D11/24; G01D11/245; G01D5/14; G01D5/142; G01D5/145; G01P; G01P1/00; G01P1/04
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
104 words
A rotation detector comprising: a housing including an inserting portion extending therefrom, said housing and said inserting portion containing an aperture configured for receiving a wheel shaft therethrough; a magnet, generally ring shaped, coupled to a wheel that is fixedly mounted on the wheel shaft; and a magnetic conversion element, positioned at a portion of the housing in proximity of the magnet, for detecting changes in magnetic poles of said magnet, said changes being indicative of rotational displacement by said wheel; wherein: said inserting portion is inserted into said magnet, and said magnet rotates in synchronism with said wheel, relative to said inserting portion.
Claim 2
Dependent Claim
104 words
A rotation detector comprising: a housing including an inserting portion extending therefrom, said housing and said inserting portion containing an aperture configured for receiving a wheel shaft therethrough; a magnet, generally ring shaped, coupled to a wheel that is fixedly mounted on the wheel shaft; and a magnetic conversion element, positioned at a portion of the housing in proximity of the magnet, for detecting changes in magnetic poles of said magnet, said changes being indicative of rotational displacement by said wheel; wherein: said inserting portion is inserted into said magnet, and said magnet rotates in synchronism with said wheel, relative to said inserting portion.
Claim 3
Dependent Claim
141 words
A rotation detector comprising: a housing including an inserting portion extending therefrom, said housing and said inserting portion containing an aperture configured for receiving a wheel shaft therethrough; a magnet, generally ring shaped, coupled to a wheel that is fixedly mounted on the wheel shaft; and a magnetic conversion elements positioned at a portion of the housing in proximity of the magnet, for detecting changes in magnetic poles of said magnet, said changes being indicative of rotational displacement by said wheel: said housing further including: a first accommodating portion formed at a periphery of the inserting portion for accommodating said magnet, and a second accommodating portion for positioning the magnetic conversion element in a proximity of the magnet; wherein: said inserting portion is inserted into said magnet, and said magnet rotates in synchronism with said wheel, relative to said inserting portion.
Claim 4
Dependent Claim
141 words
A rotation detector comprising: a housing including an inserting portion extending therefrom, said housing and said inserting portion containing an aperture configured for receiving a wheel shaft therethrough; a magnet, generally ring shaped, coupled to a wheel that is fixedly mounted on the wheel shaft; and a magnetic conversion elements positioned at a portion of the housing in proximity of the magnet, for detecting changes in magnetic poles of said magnet, said changes being indicative of rotational displacement by said wheel: said housing further including: a first accommodating portion formed at a periphery of the inserting portion for accommodating said magnet, and a second accommodating portion for positioning the magnetic conversion element in a proximity of the magnet; wherein: said inserting portion is inserted into said magnet, and said magnet rotates in synchronism with said wheel, relative to said inserting portion.
Claim 5
Dependent Claim
42 words
The rotation detector according to claim 2, wherein: said magnetic conversion element includes a detecting face; and said first accommodating portion includes a magnetism detecting face, corresponding to the detecting face of said magnetic conversion element, formed on an inner wall thereof.
Claim 6
Dependent Claim
57 words
The rotation detector according to claim 2, further comprising: a holding piece formed at a periphery of the first accommodating portion of the housing, and projecting in a direction of the wheel; and a flange portion extending outwardly from said holding piece; and an elastic member arranged on the flange portion and provided along the holding piece.
Claim 7
Dependent Claim
22 words
The rotation detector according to claim 4, wherein said elastic member includes a groove portion formed at a side end face thereof.
Claim 8
Dependent Claim
150 words
A rotation detector comprising; a housing including a cylindrical inserting portion extending from the housing, said housing and said inserting portion containing an aperture configured for receiving a wheel shaft therethrough; a magnet, generally ring shaped coupled to a wheel fixedly mounted on the wheel shaft, said magnet including: a plurality of rotation support pieces for rotating in synchronism with a wheel mounted to the wheel shaft, and a cylindrical portion into which said inserting portion is inserted, said cylindrical portion being magnetized; and a magnetic conversion element mounted to a circuit board for detecting a change in magnetic poles of the cylindrical portion; said housing further including: a first accommodating portion formed at a periphery of the inserting portion for accommodating the magnet, and a second accommodating portion for accommodating the magnetic conversion element; said circuit board being located along a guide portion formed in the second accommodating portion.
Claim 9
Dependent Claim
150 words
A rotation detector comprising; a housing including a cylindrical inserting portion extending from the housing, said housing and said inserting portion containing an aperture configured for receiving a wheel shaft therethrough; a magnet, generally ring shaped coupled to a wheel fixedly mounted on the wheel shaft, said magnet including: a plurality of rotation support pieces for rotating in synchronism with a wheel mounted to the wheel shaft, and a cylindrical portion into which said inserting portion is inserted, said cylindrical portion being magnetized; and a magnetic conversion element mounted to a circuit board for detecting a change in magnetic poles of the cylindrical portion; said housing further including: a first accommodating portion formed at a periphery of the inserting portion for accommodating the magnet, and a second accommodating portion for accommodating the magnetic conversion element; said circuit board being located along a guide portion formed in the second accommodating portion.
Claim 10
Dependent Claim
42 words
The rotation detector according to claim 6, wherein: said magnetic conversion element includes a detecting face; and said first accommodating portion includes a magnetism detecting face, corresponding to the detecting face of said magnetic conversion element, formed on an inner wall thereof.
Claim 11
Dependent Claim
56 words
The rotation detector according to claim 6, further comprising: holding piece formed at a periphery of the first accommodating portion of the housing, and projecting in a direction of the wheel; and a flange portion extending outwardly from said holding piece; and an elastic member arranged on the flange portion and provided along the holding piece.
Claim 12
Dependent Claim
22 words
The rotation detector according to claim 8, wherein said elastic member includes a groove portion formed at a side end face thereof.
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) | 2002-03-08 | 2002-09-07 | 2003-03-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2006-03-08 | 2006-09-07 | 2007-03-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2010-03-08 | 2010-09-07 | 2011-03-09 | $7700.00 | Window Closed / Lapsed |