US3683219A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Measurement-sensing device for determining a rotational speed or rotational speed change, preferably of vehicle wheels
Assignee: Daimler Benz AG
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Filing: 1970-12-08
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Granted: 1972-08-08
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Expires: 1990-12-08
Abstract
Abstract A measurement sensing device for detecting a rotational speed or rotational speed change, particularly of vehicle wheels, which essentially consists of a rotor and of a stator constructed as magnet and equipped with an annular coil, whereby an A.C. voltage proportional to the rotational speed is induced in the stator by the rotation of the rotor; the rotor and stator are thereby so combined into a structural unit that the rotor is so rotatably supported relative to the stator at the latter or at a part connected therewith that during operation no changes in radial or axial spacing between rotor and stator occur.
Inventors
- 👤 Werner Kruse
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 19:27
CPC Classifications
G; G01; G01P; G01P3/00; G01P3/42; G01P3/44; G01P3/48; G01P3/481; G01P3/488; G01P3/443; G01P3/446; F; F16; F16C; F16C41/00; F16C41/007
Claims Analysis
Total Claims: 26
Claim 1
Independent Claim
136 words
A measuring sensing device for detecting a rotational speed or a rotational speed change, which includes a rotor means and a stator means constructed as magnet and having a coil, whereby an A.C. voltage proportional to the rotational speed is induced in the stator means as a result of the rotation of the rotor means, characterized in that the rotor and stator means are so combined into a structural unit that the rotor means is rotatably supported relative to the stator means at least on a part connected with said stator means in such a manner that during the operation substantially no changes in at least one of the radial and axial distances between rotor and stator means can occur, and that the rotary movement is transmitted to the rotor means by an elastic entrainment means.
Claim 2
Dependent Claim
136 words
A measuring sensing device for detecting a rotational speed or a rotational speed change, which includes a rotor means and a stator means constructed as magnet and having a coil, whereby an A.C. voltage proportional to the rotational speed is induced in the stator means as a result of the rotation of the rotor means, characterized in that the rotor and stator means are so combined into a structural unit that the rotor means is rotatably supported relative to the stator means at least on a part connected with said stator means in such a manner that during the operation substantially no changes in at least one of the radial and axial distances between rotor and stator means can occur, and that the rotary movement is transmitted to the rotor means by an elastic entrainment means.
Claim 3
Dependent Claim
19 words
A measuring sensing device according to claim 1, characterized in that the entrainment means is constructed as leaf spring.
Claim 4
Dependent Claim
169 words
A measuring sensing device for detecting a rotational speed or a rotational speed change, which includes a rotor means and a stator means constructed as magnet and having a coil, whereby an A.C. voltage proportional to the rotational speed is induced in the stator means as a result of the rotation of the rotor means, characterized in that the rotor and stator means are so combined into a structural unit that the rotor means is rotatably supported relative to the stator means at least on a part connected with said stator means in such a manner that during the operation substantially no changes in at least one of the radial and axial distances between rotor and stator means can occur, and that the rotor means is supported at the stator means by way of first friction bearing means in the form of a slide bearing providing for the radial guidance thereof and second friction bearing means in the form of a slide bearing providing for the axial guidance thereof.
Claim 5
Dependent Claim
169 words
A measuring sensing device for detecting a rotational speed or a rotational speed change, which includes a rotor means and a stator means constructed as magnet and having a coil, whereby an A.C. voltage proportional to the rotational speed is induced in the stator means as a result of the rotation of the rotor means, characterized in that the rotor and stator means are so combined into a structural unit that the rotor means is rotatably supported relative to the stator means at least on a part connected with said stator means in such a manner that during the operation substantially no changes in at least one of the radial and axial distances between rotor and stator means can occur, and that the rotor means is supported at the stator means by way of first friction bearing means in the form of a slide bearing providing for the radial guidance thereof and second friction bearing means in the form of a slide bearing providing for the axial guidance thereof.
Claim 6
Dependent Claim
24 words
A measuring sensing device according to claim 3, characterized in that at least one of the friction bearing means consists of an iron-containing material.
Claim 7
Dependent Claim
184 words
A measuring sensing device for detecting a rotational speed or a rotational speed change, which includes a rotor means and a stator means constructed as magnet and having a coil, whereby an A.C. voltage proportional to the rotational speed is induced in the stator means as a result of the rotation of the rotor means, characterized in that the rotor and stator means are so combined into a structural unit that the rotor means is rotatably supported relative to the stator means at least on a part connected with said stator means in such a manner that during the operation substantially no changes in at least one of the radial and axial distances between rotor and stator means can occur, the rotor and stator means being provided at mutually opposite end-faces with end-face tooth means that do not contact one another, and that an axial friction bearing means is formed by layers of non-magnetic friction bearing material applied to the end-face tooth means so that a certain axial distance of rotor and stator means is determined by the layer thicknesses over the tooth tips.
Claim 8
Dependent Claim
184 words
A measuring sensing device for detecting a rotational speed or a rotational speed change, which includes a rotor means and a stator means constructed as magnet and having a coil, whereby an A.C. voltage proportional to the rotational speed is induced in the stator means as a result of the rotation of the rotor means, characterized in that the rotor and stator means are so combined into a structural unit that the rotor means is rotatably supported relative to the stator means at least on a part connected with said stator means in such a manner that during the operation substantially no changes in at least one of the radial and axial distances between rotor and stator means can occur, the rotor and stator means being provided at mutually opposite end-faces with end-face tooth means that do not contact one another, and that an axial friction bearing means is formed by layers of non-magnetic friction bearing material applied to the end-face tooth means so that a certain axial distance of rotor and stator means is determined by the layer thicknesses over the tooth tips.
Claim 9
Dependent Claim
184 words
A measuring sensing device for detecting a rotational speed or a rotational speed change, which includes a rotor means and a stator means constructed as magnet and having a coil, whereby A.C. voltage proportional to the rotational speed is induced in the stator means as a result of the rotation of the rotor means, characterized in that the rotor and stator means are so combined into a structural unit that the rotor means is rotatably supported relative to the stator means at least on a part connected with said stator means in such a manner that during the operation substantially no changes in at least one of the radial and axial distances between rotor and stator means can occur, one of the rotor and stator means being provided with internal tooth means and the other with external tooth means whereby the tooth means are arranged at such a radial distance that they do not contact one another, and radial friction bearing means being formed by layers of non-magnetic friction bearing material applied over the tooth means for maintaining the distance between the tooth means.
Claim 10
Dependent Claim
184 words
A measuring sensing device for detecting a rotational speed or a rotational speed change, which includes a rotor means and a stator means constructed as magnet and having a coil, whereby A.C. voltage proportional to the rotational speed is induced in the stator means as a result of the rotation of the rotor means, characterized in that the rotor and stator means are so combined into a structural unit that the rotor means is rotatably supported relative to the stator means at least on a part connected with said stator means in such a manner that during the operation substantially no changes in at least one of the radial and axial distances between rotor and stator means can occur, one of the rotor and stator means being provided with internal tooth means and the other with external tooth means whereby the tooth means are arranged at such a radial distance that they do not contact one another, and radial friction bearing means being formed by layers of non-magnetic friction bearing material applied over the tooth means for maintaining the distance between the tooth means.
Claim 11
Dependent Claim
144 words
A measuring sensing device for detecting a rotational speed or a rotational speed change, which includes a rotor means and a stator means constructed as magnet and having a coil, whereby an A.C. voltage proportional to the rotational speed is induced in the stator means as a result of the rotation of the rotor means, characterized in that the rotor and stator means are so combined into a structural unit that the rotor means is rotatably supported relative to the stator means at least on a part connected with said stator means in such a manner that during the operation substantially no changes in at least one of the radial and axial distances between rotor and stator means can occur, and that at least one of the two parts consisting of rotor and stator means essentially consists of a synthetic resinous material containing iron.
Claim 12
Dependent Claim
144 words
A measuring sensing device for detecting a rotational speed or a rotational speed change, which includes a rotor means and a stator means constructed as magnet and having a coil, whereby an A.C. voltage proportional to the rotational speed is induced in the stator means as a result of the rotation of the rotor means, characterized in that the rotor and stator means are so combined into a structural unit that the rotor means is rotatably supported relative to the stator means at least on a part connected with said stator means in such a manner that during the operation substantially no changes in at least one of the radial and axial distances between rotor and stator means can occur, and that at least one of the two parts consisting of rotor and stator means essentially consists of a synthetic resinous material containing iron.
Claim 13
Dependent Claim
23 words
A measuring sensing device according to claim 7, characterized in that both rotor and stator means are made from iron-containing synthetic resinous material.
Claim 14
Dependent Claim
157 words
A measuring sensing device for detecting a rotational speed or a rotational speed change, which includes a rotor means and a stator means constructed as magnet and having a coil, whereby an A.C. voltage proportional to the rotational speed is induced in the stator means as a result of the rotation of the rotor means, characterized in that the rotor and stator means are so combined into a structural unit that the rotor means is rotatably supported relative to the stator means at least on a part connected with said stator means in such a manner that during the operation substantially no changes in at least one of the radial and axial distances between rotor and stator means can occur, at least one of the rotor and stator means being partially magnetized, and only the counter element formed of the other of the two parts consisting of rotor and stator means being provided with a toothed means.
Claim 15
Dependent Claim
157 words
A measuring sensing device for detecting a rotational speed or a rotational speed change, which includes a rotor means and a stator means constructed as magnet and having a coil, whereby an A.C. voltage proportional to the rotational speed is induced in the stator means as a result of the rotation of the rotor means, characterized in that the rotor and stator means are so combined into a structural unit that the rotor means is rotatably supported relative to the stator means at least on a part connected with said stator means in such a manner that during the operation substantially no changes in at least one of the radial and axial distances between rotor and stator means can occur, at least one of the rotor and stator means being partially magnetized, and only the counter element formed of the other of the two parts consisting of rotor and stator means being provided with a toothed means.
Claim 16
Dependent Claim
38 words
A measuring sensing device according to claim 2, characterized in that the rotor means is supported at the stator means by way of an friction bearing means which guides the rotor means in the radial and axial directions.
Claim 17
Dependent Claim
29 words
A measuring sensing device according to claim 1, characterized in that the rotor means is supported at the stator means by way of at least one friction bearing means.
Claim 18
Dependent Claim
29 words
A measuring sensing device according to claim 11, characterized in that separate friction bearing means in the form of slide bearings are provided for the radial and axial guidance.
Claim 19
Dependent Claim
32 words
A measuring sensing device according to claim 2, characterized in that the rotor and stator means are provided at mutually opposite end-faces with end-face tooth means tHat do not contact one another.
Claim 20
Dependent Claim
52 words
A measuring sensing device according to claim 13, characterized in that an axial friction bearing means is formed by layers of non-magnetic friction bearing material applied to the end-face tooth means so that a certain axial distance of rotor and stator means is determined by the layer thicknesses over the tooth tips.
Claim 21
Dependent Claim
30 words
A measuring sensing device according to claim 14, characterized in that a radial friction bearing means is formed by layers of non-magnetic friction bearing material applied over the tooth means.
Claim 22
Dependent Claim
33 words
A measuring sensing device according to claim 2, characterized in that at least one of the two parts consisting of rotor and stator means essentially consists of a synthetic resinous material containing iron.
Claim 23
Dependent Claim
23 words
A measuring sensing device according to claim 2, characterized in that both rotor and stator means are made from iron-containing synthetic resinous material.
Claim 24
Dependent Claim
23 words
A measuring sensing device according to claim 2, characterized in that at least one of the rotor and stator means is partially magnetized.
Claim 25
Dependent Claim
19 words
A measuring sensing device according to claim 2, characterized in that both rotor and stator means are partially magnetized.
Claim 26
Dependent Claim
35 words
A measuring sensing device according to claim 18, characterized in that only the counter element formed of the other of the two parts consisting of rotor and stator means is provided with a toothed means.
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) | 1975-08-08 | 1976-02-07 | 1976-08-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-08-08 | 1980-02-07 | 1980-08-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-08-08 | 1984-02-07 | 1984-08-08 | $7700.00 | Window Closed / Lapsed |