Patent US3582986A successfully refreshed from Google Patents.
US3582986A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Clutch motor
Assignee: Mitsubishi Electric Corp
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Filing: 1969-05-09
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Granted: 1971-06-01
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Expires: 1989-05-09
Abstract
Abstract A clutch motor for a sewing machine comprising a flywheel on the motor shaft and two concentric clutch wheels connected with one another through reducing gearing and alternatively engageable with the same face of the flywheel. One of the clutch wheels being on an output shaft which is thereby driven at a speed dependent on which clutch wheel is engaged. A lever arrangement makes it possible to stop the sewing machine selectively in different positions as desired.
Inventors
- 👤 Masahiro Yokoyama
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 16:24
CPC Classifications
D; D05; D05B; D05B69/00; D05B69/22
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
140 words
A clutch motor comprising an electric motor unit, a clutch unit for transmitting an output from the electric motor unit to the load, fixed point stop means operatively coupled to both the clutch unit and the load to stop the clutch unit so as to stop the load at a predetermined position, a first lever member for engaging and disengaging the clutch unit from the electric motor unit, a second lever member pivotably mounted at one end to the first lever member and movable in a predetermined direction along with the first lever member and also movable in the direction opposite to the predetermined direction independently of the first lever member, and means responsive to the movement of the second lever member independent of the first lever member for stopping the load at its position different from the predetermined position.
Claim 2
Dependent Claim
140 words
A clutch motor comprising an electric motor unit, a clutch unit for transmitting an output from the electric motor unit to the load, fixed point stop means operatively coupled to both the clutch unit and the load to stop the clutch unit so as to stop the load at a predetermined position, a first lever member for engaging and disengaging the clutch unit from the electric motor unit, a second lever member pivotably mounted at one end to the first lever member and movable in a predetermined direction along with the first lever member and also movable in the direction opposite to the predetermined direction independently of the first lever member, and means responsive to the movement of the second lever member independent of the first lever member for stopping the load at its position different from the predetermined position.
Claim 3
Dependent Claim
162 words
A clutch motor comprising an electric motor having a shaft, a flywheel mounted directly on one end of said shaft, an output shaft disposed at said one end of said motor shaft in alignment with said motor shaft, a main clutch wheel disposed on and rotatable with said output shaft in facing relation with that face of the flywheel remote from said motor, said main clutch wheel being engageable with and disengageable from said flywheel, an auxiliary clutch wheel rotatably mounted concentric with said main clutch wheel, sAid auxiliary clutch wheel being engageable with and disengageable from said face of said flywheel, speed reduction means operatively connected to the auxiliary clutch wheel to reduce the speed of rotation of the latter, a braking plate operatively connected to said speed reduction means to transmit the rotational movement of the latter to said main clutch wheel and electromagnetic means for alternatively engaging said main clutch wheel and said auxiliary clutch wheel with said flywheel.
Claim 4
Dependent Claim
162 words
A clutch motor comprising an electric motor having a shaft, a flywheel mounted directly on one end of said shaft, an output shaft disposed at said one end of said motor shaft in alignment with said motor shaft, a main clutch wheel disposed on and rotatable with said output shaft in facing relation with that face of the flywheel remote from said motor, said main clutch wheel being engageable with and disengageable from said flywheel, an auxiliary clutch wheel rotatably mounted concentric with said main clutch wheel, sAid auxiliary clutch wheel being engageable with and disengageable from said face of said flywheel, speed reduction means operatively connected to the auxiliary clutch wheel to reduce the speed of rotation of the latter, a braking plate operatively connected to said speed reduction means to transmit the rotational movement of the latter to said main clutch wheel and electromagnetic means for alternatively engaging said main clutch wheel and said auxiliary clutch wheel with said flywheel.
Claim 5
Dependent Claim
36 words
A clutch motor according to claim 2, in which said electromagnetic means is energized when said main clutch wheel is disengaged from said flywheel and upon being energized engages said auxiliary clutch wheel with said flywheel.
Claim 6
Dependent Claim
66 words
A clutch motor according to claim 2, further comprising means connecting said output shaft with a rotary load, means for sensing the rotational position of the load, means controlled by said sensing means for disengaging said clutch wheels from said flywheel and applying braking force to stop said load in a selected position and means for selectively changing the position in which said load is stopped.
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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) | 1974-05-31 | 1974-11-30 | 1975-06-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-05-31 | 1978-11-30 | 1979-06-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-05-31 | 1982-11-30 | 1983-06-01 | $7700.00 | Window Closed / Lapsed |