US4613761A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Starter dynamo
Assignee: Mitsubishi Electric Corp
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Filing: 1984-10-18
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Granted: 1986-09-23
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Expires: 2004-10-18
Abstract
Abstract A starter dynamo comprises a d.c. motor having a hollow armature rotary shaft, a rotary output shaft passing through the hollow armature rotary shaft and connected to the armature rotary shaft through a one-way clutch, a transmission mechanism provided at one end of the rotary output shaft to keep connection of the rotary output shaft to a crank shaft of an engine for revolution, and a generator provided with a flywheel magnet disposed at the other end of the rotary output shaft.
Inventors
- 👤 Kiyoshi Yabunaka
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 20:49
CPC Classifications
H; H02; H02K; H02K7/00; H02K7/003; F; F02; F02N; F02N11/00; F02N11/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
125 words
A starter dynamo comprising: a rotatable output shaft having an enlarged diameter portion at one end thereof and a reduced diameter portion along the remainder thereof; rotational power transmission means at said one end of said shaft; a D.C. motor having an armature mounted on a hollow armature rotary shaft mounted coaxially around said output shaft, with said armature mounted coaxially around said reduced diameter portion of said output shaft; one way clutch means for rotatably connecting said hollow shaft to said enlarged diameter portion of said output shaft in one rotational direction; and a generator provided with a flywheel magnet fixed to another end of said output shaft and axially spaced from said D.C. motor, whereby the diameter of said D.C. motor is reduced.
Claim 2
Dependent Claim
125 words
A starter dynamo comprising: a rotatable output shaft having an enlarged diameter portion at one end thereof and a reduced diameter portion along the remainder thereof; rotational power transmission means at said one end of said shaft; a D.C. motor having an armature mounted on a hollow armature rotary shaft mounted coaxially around said output shaft, with said armature mounted coaxially around said reduced diameter portion of said output shaft; one way clutch means for rotatably connecting said hollow shaft to said enlarged diameter portion of said output shaft in one rotational direction; and a generator provided with a flywheel magnet fixed to another end of said output shaft and axially spaced from said D.C. motor, whereby the diameter of said D.C. motor is reduced.
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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) | 1989-09-22 | 1990-03-24 | 1990-09-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-09-22 | 1994-03-24 | 1994-09-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-09-22 | 1998-03-24 | 1998-09-23 | $7700.00 | Window Closed / Lapsed |