US5023734A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cylindrical rotary transducer
Assignee: Victor Company of Japan Ltd
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Filing: 1989-10-30
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Granted: 1991-06-11
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Expires: 2009-10-30
Abstract
Abstract In a cylindrical rotary transducer having a stator core cylindrically formed from a high permeability material, a rotary core disposed coaxially with the stator core and cylindrically formed from a high permeability material, and a stator coil and rotor coil disposed respectively on the stator core and the rotary core so as to confront each other; the cylindrical rotary transducer comprises a disk-shaped terminal member mounted on one of the stator and rotary cores, having a plurality of projections radially formed on an outer peripheral edge thereof, and terminals connectd to one of the stator and rotor coils being fastened to the projections; and a supporting element for supporting one of the stator and rotary cores from the other in a rotatable relationship.
Inventors
- 👤 Yoshihiro Tamaki
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 01:58
CPC Classifications
G; G11; G11B; G11B5/00; G11B5/48; G11B5/52; G11B5/53; H; H01; H01F; H01F38/00; H01F38/18; H02; H02K; H02K24/00
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
183 words
A cylindrical rotary transducer comprising a stator core cylindrically formed from a high permeability material, a rotary core disposed concentrically with said stator core and cylindrically formed from a high permeability material, and at least a stator coil and a rotary coil having free coil ends and disposed respectively on the stator core and the rotary core so as to confront each other, said cylindrical rotary transducer further comprising: a disk-shaped terminal member mounted on one of the stator and rotary cores, having a plurality of projections radially formed on an outer peripheral edge thereof, and having a plurality of radially extending slits and grooves adjacent to said projections so as to guide said free coil ends to one of said stator and rotary coils through said slits and grooves to said projections each of said free coiled ends of one of said stator and rotary coils being wrapped around and fastened respectively to each of said plurality of projections; and means for rotatably supporting one of said stator and rotary cores with respect to the other of said stator and rotary cores.
Claim 2
Dependent Claim
183 words
A cylindrical rotary transducer comprising a stator core cylindrically formed from a high permeability material, a rotary core disposed concentrically with said stator core and cylindrically formed from a high permeability material, and at least a stator coil and a rotary coil having free coil ends and disposed respectively on the stator core and the rotary core so as to confront each other, said cylindrical rotary transducer further comprising: a disk-shaped terminal member mounted on one of the stator and rotary cores, having a plurality of projections radially formed on an outer peripheral edge thereof, and having a plurality of radially extending slits and grooves adjacent to said projections so as to guide said free coil ends to one of said stator and rotary coils through said slits and grooves to said projections each of said free coiled ends of one of said stator and rotary coils being wrapped around and fastened respectively to each of said plurality of projections; and means for rotatably supporting one of said stator and rotary cores with respect to the other of said stator and rotary cores.
Claim 3
Dependent Claim
25 words
A cylindrical rotary transducer as set forth in claim 1, wherein said disk-shaped terminal member is mounted on one end surface of said stator core.
Claim 4
Dependent Claim
31 words
A cylindrical rotary transducer as set forth in claim 2, wherein said disk-shaped terminal member is provided with a flexible printed film strip for connecting said stator coil to electronic circuitry.
Claim 5
Dependent Claim
34 words
A cylindrical rotary transducer as set forth in claim 3, wherein said free coil ends of said stator coil fastened to said projections are soldered to connection terminals of said flexible printed film strip.
Claim 6
Dependent Claim
43 words
A cylindrical rotary transducer as set forth in claim 1, wherein said rotary transducer is accommodated within a pair of stationary and rotary cylinders, a magnetic head being mounted to said rotary cylinder so as to protrude in a gap between said cylinders.
Claim 7
Dependent Claim
30 words
A cylindrical rotary transducer as set forth in claim 5, wherein said magnetic head is electrically connected to said rotor coil by means of pins penetrating through said rotary cylinder.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1994-06-10 | 1994-12-10 | 1995-06-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1998-06-10 | 1998-12-10 | 1999-06-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2002-06-10 | 2002-12-10 | 2003-06-11 | $7700.00 | Window Closed / Lapsed |