US4905532A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Power transmitting apparatus
Assignee: Aisin Corp
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Filing: 1988-09-29
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Granted: 1990-03-06
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Expires: 2008-09-29
Abstract
Abstract A power transmitting apparatus is comprised of an electrically operated motor having a shaft which is rotatable in one or the other direction, a worm-gear provided at an outer periphery thereof with a geared portion at which an angle of load is established at a set value so as to be larger than an angle of friction and fixedly mounted on the shaft of the motor, a worm-wheel provided at an outer periphery thereof with a geared portion which is in mesh engagement with the geared portion of the worm-gear, and a lever operatively connected to the worm-wheel for transmitting the rotational torque therefrom to a driven member. Since an angle of load is set so as to be larger than an angle of friction in the worm-gear, the rotational torque may be transmitted between the worm-gear and the worm-wheel. So, flexibility in mechanical design is increased.
Inventors
- 👤 Ryoichi Fukumoto
- 👤 Shigeru Hayakawa
- 👤 Nozomu Torii
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 19:30
CPC Classifications
E; E05; E05B; E05B81/00; E05B81/02; E05B81/04; E05B81/06; E05B81/12; E05B81/16; E05B81/24; E05B81/32; E05B81/34; E05B81/50; E05B81/54; E05B81/56; F; F16; F16H; F16H1/00; F16H1/02; F16H1/04; F16H1/12; F16H1/16; E05B85/00; E05B85/02; Y; Y10; Y10T; Y10T292/00; Y10T292/08; Y10T292/1043; Y10T292/1075; Y10T292/1082; Y10T74/00; Y10T74/19; Y10T74/19642; Y10T74/19698; Y10T74/19828
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
186 words
A power transmitting apparatus comprising: an electrically operated motor having a shaft which is rotatable in opposite directions; a worm-gear provided at an outer periphery thereof with a geared portion at which an angle of load is established at a set value so as to be larger than an angle of friction and fixedly mounted on said shaft of said motor; a worm-wheel provided at an outer periphery thereof with a geared portion which is in mesh engagement with said geared portion of said worm-gear; a lever operatively connected to said worm-wheel for transmitting the rotational torque therefrom to a driven member; and a return mechanism for returning said worm-wheel to an original position after rotation of said worm-wheel, said return mechanism including an expanding spring, a guide means for accommodating said expanding spring, said guide means having a narrowed portion, a prominence formed on a lower surface of said worm-wheel and extended into said narrowed portion, and a pair of equally pitched projections formed on an upper surface of said worm-wheel, each of said projections being engagable with said lever after rotation of said worm-wheel.
Claim 2
Dependent Claim
186 words
A power transmitting apparatus comprising: an electrically operated motor having a shaft which is rotatable in opposite directions; a worm-gear provided at an outer periphery thereof with a geared portion at which an angle of load is established at a set value so as to be larger than an angle of friction and fixedly mounted on said shaft of said motor; a worm-wheel provided at an outer periphery thereof with a geared portion which is in mesh engagement with said geared portion of said worm-gear; a lever operatively connected to said worm-wheel for transmitting the rotational torque therefrom to a driven member; and a return mechanism for returning said worm-wheel to an original position after rotation of said worm-wheel, said return mechanism including an expanding spring, a guide means for accommodating said expanding spring, said guide means having a narrowed portion, a prominence formed on a lower surface of said worm-wheel and extended into said narrowed portion, and a pair of equally pitched projections formed on an upper surface of said worm-wheel, each of said projections being engagable with said lever after rotation of said worm-wheel.
Claim 3
Dependent Claim
20 words
A power transmitting apparatus according to claim 1, wherein said guide means is in the form of an annular groove.
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) | 1993-03-05 | 1993-09-04 | 1994-03-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-03-05 | 1997-09-04 | 1998-03-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-03-05 | 2001-09-04 | 2002-03-06 | $7700.00 | Window Closed / Lapsed |