US4661735A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Arrangement for mounting a plurality of motors
Assignee: Victor Company of Japan Ltd
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Filing: 1985-09-11
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Granted: 1987-04-28
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Expires: 2005-09-11
Abstract
Abstract A plurality of motors are arranged on opposite surfaces of a single magnetic base plate such that they are magnetically isolated from each other by the base plate. Such an arrangement prevents the motors from magnetically interfering with each other and, thereby, allows them to be positioned as close to each other as possible, in order to cut down the overall size of an apparatus in which the motors are installed.
Inventors
- 👤 Tatsuya Miki
- 👤 Takashi Saito
- 👤 Yukihiro Kishima
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 16:23
CPC Classifications
G; G11; G11B; G11B21/00; G11B21/02; G11B5/00; G11B5/48; G11B5/54; G11B5/55; G11B5/5521; G11B19/00; G11B19/20; G11B25/00; G11B25/04; G11B25/043; G11B33/00; G11B33/12; G11B33/121; G11B33/14; G11B33/1493; H; H02; H02K; H02K16/00; H02K7/00; H02K7/14; H02K1/00; H02K1/06; H02K1/12; H02K1/18; H02K1/182; H02K5/00; H02K5/04; H02K5/16; H02K5/163
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
90 words
A motor mounting arrangement for mounting a plurality of motors comprising a single ferromagnetic base plate, electrical insulating means provided on the surfaces of said base plate for electrically insulating said base plate, each of the motors including a stator coil mounted on the base plate over said insulating means, a rotor magnet located to face the stator coil, and a shaft on which the rotor magnet is mounted, the stator coil of those motors which immediately neighbor each other being mounted on the opposite surfaces of the base plate.
Claim 2
Dependent Claim
90 words
A motor mounting arrangement for mounting a plurality of motors comprising a single ferromagnetic base plate, electrical insulating means provided on the surfaces of said base plate for electrically insulating said base plate, each of the motors including a stator coil mounted on the base plate over said insulating means, a rotor magnet located to face the stator coil, and a shaft on which the rotor magnet is mounted, the stator coil of those motors which immediately neighbor each other being mounted on the opposite surfaces of the base plate.
Claim 3
Dependent Claim
24 words
A motor mounting arrangement as claimed in claim 1, wherein the motors comprise a spindle motor and an access motor of a disk drive.
Claim 4
Dependent Claim
43 words
A motor mounting arrangement as claimed in claim 2, wherein the stator coil of the spindle motor is mounted on an upper surface of the base plate, and the stator coil of the access motor on a lower surface of the base plate.
Claim 5
Dependent Claim
16 words
A motor mounting arrangement as claimed in claim 1 wherein said base plate is generally flat.
Claim 6
Dependent Claim
31 words
A motor mounting arrangement as claimed in claim 4 wherein each of said motors has bearings for rotatably supporting its respective shaft, and means mounting said bearings on said base plate.
Claim 7
Dependent Claim
18 words
A motor mounting arrangement as claimed in claim 1, wherein said insulating means comprises a printed circuit board.
Claim 8
Dependent Claim
33 words
A motor mounting arrangement as claimed in claim 1, wherein at least one of said motors has a magnetized scale mounted on said shaft and a magnetoresistance element mounted on the base plate.
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) | 1990-04-27 | 1990-10-27 | 1991-04-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-04-27 | 1994-10-27 | 1995-04-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-04-27 | 1998-10-27 | 1999-04-28 | $7700.00 | Window Closed / Lapsed |