US4720650A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Motor
Assignee: Canon Inc
•
Filing: 1986-12-19
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Granted: 1988-01-19
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Expires: 2006-12-19
Abstract
Abstract A motor in which a coil constituting a rotor is integrally formed with self-lubricating resin or oil-containing resin to construct a portion of a bearing, which is utilized as a part of a roller or sliding bearing.
Inventors
- 👤 Ryoichi Hanamori
- 👤 Hiroshi Yamamoto
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 04:10
CPC Classifications
F; F16; F16C; F16C33/00; F16C33/30; F16C33/58; F16C33/62; H; H02; H02K; H02K23/00; H02K23/56; H02K7/00; H02K7/08; H02K7/086; H02K7/088; Y; Y10; Y10S; Y10S384/00; Y10S384/90; Y10S384/909
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
137 words
A motor comprising: a first yoke member having a hollow cylindrical shape; an annular magnet provided on the outside of said first yoke member; a coil positioned outside said annular magnet, and formed of a self-lubricating resin or oil-containing resin material in the shape of a cylinder of which at least an integrally formed end portion having a face surface thereon radially inwardly protrudes to constitute a bearing portion for contacting ball bearings on the end face surfaces of said protruding portion; a second yoke member positioned outside said coil; and a fixed bearing portion formed on said second yoke whereon said ball bearings are disposed between said end face surfaces of said integrally formed end and said fixed bearing portion; and electric power supply means being attached to said coil for supplying power to said coil.
Claim 2
Dependent Claim
137 words
A motor comprising: a first yoke member having a hollow cylindrical shape; an annular magnet provided on the outside of said first yoke member; a coil positioned outside said annular magnet, and formed of a self-lubricating resin or oil-containing resin material in the shape of a cylinder of which at least an integrally formed end portion having a face surface thereon radially inwardly protrudes to constitute a bearing portion for contacting ball bearings on the end face surfaces of said protruding portion; a second yoke member positioned outside said coil; and a fixed bearing portion formed on said second yoke whereon said ball bearings are disposed between said end face surfaces of said integrally formed end and said fixed bearing portion; and electric power supply means being attached to said coil for supplying power to said coil.
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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) | 1991-01-18 | 1991-07-20 | 1992-01-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-01-18 | 1995-07-20 | 1996-01-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-01-18 | 1999-07-20 | 2000-01-19 | $7700.00 | Window Closed / Lapsed |