Patent US3928802A successfully refreshed from Google Patents.
US3928802A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Axle generator device having deflectable stator
Assignee: WABCO WESTINGHOUSE GmbH
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Filing: 1974-05-24
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Granted: 1975-12-23
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Expires: 1994-05-24
Abstract
Abstract An axle generator device the rotor of which rotates in a plane passing through the magnetic flux path of a stator having a coil with a permanent magnet core that is yieldably biased against a positive stop defining the magnetic air gap between the rotor and stator, and is further arranged to provide axial and radial deflection of the stator against the yieldable bias in the event the rotor becomes cocked or otherwise misaligned during wheel/axle assembly or disassembly, thereby providing protection of the stator against damage and ultimate generation of inaccurate speed signals.
Inventors
- 👤 Erich Reinecke
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 04:15
CPC Classifications
G; G01; G01P; G01P3/00; G01P3/42; G01P3/44; G01P3/48; G01P3/481; G01P3/488
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
234 words
A speed signal generator device for providing output pulses corresponding in frequency to the angular velocity of a rotating member comprising: a. a stator mounted on the axle of the rotating member and having a magnetic flux field; b. a rotor mounted on the rotating member for movement in a plane passing through thE magnetic flux field and having a plurality of uniformly spaced teeth to intermittently alter the path of the magnetic field flux; c. a bore in the axle of the rotating member having an axis substantially aligned opposite the line of rotation of the teeth of said rotor; d. a bushing in said bore having an inturned flange at one end; e. said stator including: i. a permanent magnet core for providing said magnetic flux, said core having one end adjacent said rotor and the other end terminating in a guide member that is operatively confined within said bushing for axial movement in said bore; and ii. an electric coil on said magnetic core for generating output pulses with successive alterations in said magnetic flux field; and f. elastic means for yieldably urging the other end of said core into engagement with the inturned flange of said bushing to establish the position of the one end of said core a predetermined distance from the teeth of said rotor during rotation thereof when said rotating member is properly assembled on its axle.
Claim 2
Dependent Claim
234 words
A speed signal generator device for providing output pulses corresponding in frequency to the angular velocity of a rotating member comprising: a. a stator mounted on the axle of the rotating member and having a magnetic flux field; b. a rotor mounted on the rotating member for movement in a plane passing through thE magnetic flux field and having a plurality of uniformly spaced teeth to intermittently alter the path of the magnetic field flux; c. a bore in the axle of the rotating member having an axis substantially aligned opposite the line of rotation of the teeth of said rotor; d. a bushing in said bore having an inturned flange at one end; e. said stator including: i. a permanent magnet core for providing said magnetic flux, said core having one end adjacent said rotor and the other end terminating in a guide member that is operatively confined within said bushing for axial movement in said bore; and ii. an electric coil on said magnetic core for generating output pulses with successive alterations in said magnetic flux field; and f. elastic means for yieldably urging the other end of said core into engagement with the inturned flange of said bushing to establish the position of the one end of said core a predetermined distance from the teeth of said rotor during rotation thereof when said rotating member is properly assembled on its axle.
Claim 3
Dependent Claim
49 words
A speed signal generator device as recited in claim 1, further characterized in that the surface of the guide member is spherical to provide for universal pivotal movement of said core about said guide member whereby said one end of said core is deflectable in a substantially radial direction.
Claim 4
Dependent Claim
30 words
A speed signal generator device as recited in claim 1, further characterized in that the teeth of said rotor are each provided with a groove into which said core projects.
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) | 1978-12-22 | 1979-06-23 | 1979-12-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-12-22 | 1983-06-23 | 1983-12-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-12-22 | 1987-06-23 | 1987-12-23 | $7700.00 | Window Closed / Lapsed |