US4028951A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Motion transforming mechanism
Assignee: Nidec Precision Corp
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Filing: 1975-05-08
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Granted: 1977-06-14
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Expires: 1995-05-08
Abstract
Abstract A motion transforming mechanism which comprises a sliding member, a rack lever supported rotatably on the sliding member and engageable with a driving gear, a trigger lever supported rotatably on said sliding member and engaged with said rack lever and a fixed pin engageable with the rack lever so that the rotation of the driving gear may be positively and accurately transformed to a linear motion of a fixed stroke, the sliding member being utilized to intermittently rotate a ratchet wheel.
Inventors
- 👤 Nobuyoshi Matsuzawa
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 21:23
CPC Classifications
F; F16; F16H; F16H27/00; F16H27/04; F16H27/10; Y; Y10; Y10T; Y10T74/00; Y10T74/15; Y10T74/1526; Y10T74/1529
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
333 words
A motion transforming mechanism comprising a base plate, a driving gear rotatably borne by said base plate, a sliding plate slidably supported on said base plate, a spring connected between said base plate and sliding plate to bias said sliding plate to its rest position, a rack lever supported rotatably on said sliding plate and having a rack portion capable of meshing with said driving gear, a trigger lever supported rotatably on said sliding plate and engageable with said rack lever, an electromagnet secured on said base plate and capable of attracting said trigger lever, said rack lever being arranged so as to be meshed with said driving gear when said electromagnet is energized with one electric pulse and arranged so as to be disengaged from said driving gear only when said rack lever is pushed by an external force after de-energization of said electromagnet, and a member provided on said base plate and engageable with said rack lever, said rack lever being pushed by said trigger lever with only the force of rotation of said trigger lever and thereby said rack portion being meshed with said driving gear, when said trigger lever is attracted by said electromagnet, said rack portion being disengaged from the driving gear when said rack lever engages with said member, and said rack lever being held as disengaged by said trigger lever and said sliding plate being returned by said spring to its rest position when said rack lever is disengaged from said driving gear; a ratchet wheel rotatably borne by said base plate, a ratchet lever supported rotatably on said sliding plate and engageable with said ratchet wheel, and a holding lever supported rotatably on said sliding plate and engageable with said ratchet wheel, said holding lever engages with said ratchet wheel while said sliding plate is stationary, and said holding lever is disengaged from said ratchet wheel and said ratchet wheel is rotated by one tooth by said ratchet lever when said sliding plate is moved.
Claim 2
Dependent Claim
333 words
A motion transforming mechanism comprising a base plate, a driving gear rotatably borne by said base plate, a sliding plate slidably supported on said base plate, a spring connected between said base plate and sliding plate to bias said sliding plate to its rest position, a rack lever supported rotatably on said sliding plate and having a rack portion capable of meshing with said driving gear, a trigger lever supported rotatably on said sliding plate and engageable with said rack lever, an electromagnet secured on said base plate and capable of attracting said trigger lever, said rack lever being arranged so as to be meshed with said driving gear when said electromagnet is energized with one electric pulse and arranged so as to be disengaged from said driving gear only when said rack lever is pushed by an external force after de-energization of said electromagnet, and a member provided on said base plate and engageable with said rack lever, said rack lever being pushed by said trigger lever with only the force of rotation of said trigger lever and thereby said rack portion being meshed with said driving gear, when said trigger lever is attracted by said electromagnet, said rack portion being disengaged from the driving gear when said rack lever engages with said member, and said rack lever being held as disengaged by said trigger lever and said sliding plate being returned by said spring to its rest position when said rack lever is disengaged from said driving gear; a ratchet wheel rotatably borne by said base plate, a ratchet lever supported rotatably on said sliding plate and engageable with said ratchet wheel, and a holding lever supported rotatably on said sliding plate and engageable with said ratchet wheel, said holding lever engages with said ratchet wheel while said sliding plate is stationary, and said holding lever is disengaged from said ratchet wheel and said ratchet wheel is rotated by one tooth by said ratchet lever when said sliding plate is moved.
Claim 3
Dependent Claim
37 words
A motion transforming mechanism according to claim 1, in which said holding lever has a portion to be pressed against the rotary shaft of said ratchet wheel so as to prevent the idling of said ratchet wheel.
Claim 4
Dependent Claim
306 words
A motion transforming mechanism comprising a base plate, a driving gear rotatably borne by said base plate, a sliding plate slidably supported on said base plate, a spring connected between said base plate and sliding plate to bias said sliding plate to its rest position, a rack lever supported rotatably on said sliding plate and having a rack portion capable of meshing with said driving gear, a trigger lever supported rotatably on said sliding plate and engageable with said rack lever, an electromagnet secured on said base plate and capable of attracting said trigger lever, said rack lever being arranged so as to be meshed with said driving gear when said electromagnet is energized with one electric pulse and arranged so as to be disengaged from said driving gear only when said rack lever is pushed by an external force after de-energization of said electromagnet, and a member provided on said base plate and engageable with said rack lever, said rack lever being pushed by said trigger lever with only the force of rotation of said trigger lever and thereby said rack portion being meshed with said driving gear, when said trigger lever is attracted by said electromagnet, said rack portion being disengaged from the driving gear when said rack lever engages with said member, and said rack lever being held as disengaged by said trigger lever and said sliding plate being returned by said spring to its rest position when said rack lever is disengaged from said driving gear; at least one stopper pin made of a nonmagnetic material and secured to said sliding plate and engageable with said rack lever and trigger lever, said trigger lever and rack lever are held so as not to be in contact with each other by said stopper pin unless said trigger lever is attracted by said electromagnet.
Claim 5
Dependent Claim
306 words
A motion transforming mechanism comprising a base plate, a driving gear rotatably borne by said base plate, a sliding plate slidably supported on said base plate, a spring connected between said base plate and sliding plate to bias said sliding plate to its rest position, a rack lever supported rotatably on said sliding plate and having a rack portion capable of meshing with said driving gear, a trigger lever supported rotatably on said sliding plate and engageable with said rack lever, an electromagnet secured on said base plate and capable of attracting said trigger lever, said rack lever being arranged so as to be meshed with said driving gear when said electromagnet is energized with one electric pulse and arranged so as to be disengaged from said driving gear only when said rack lever is pushed by an external force after de-energization of said electromagnet, and a member provided on said base plate and engageable with said rack lever, said rack lever being pushed by said trigger lever with only the force of rotation of said trigger lever and thereby said rack portion being meshed with said driving gear, when said trigger lever is attracted by said electromagnet, said rack portion being disengaged from the driving gear when said rack lever engages with said member, and said rack lever being held as disengaged by said trigger lever and said sliding plate being returned by said spring to its rest position when said rack lever is disengaged from said driving gear; at least one stopper pin made of a nonmagnetic material and secured to said sliding plate and engageable with said rack lever and trigger lever, said trigger lever and rack lever are held so as not to be in contact with each other by said stopper pin unless said trigger lever is attracted by said electromagnet.
Claim 6
Dependent Claim
30 words
A motion transforming mechanism according to claim 3, in which said stopper pin consists of a shaft erected on said sliding plate and a rubber ring fitted to said shaft.
Claim 7
Dependent Claim
29 words
A motion transforming mechanism according to claim 3, in which the moving range of said sliding plate is restricted by at least one pin erected on said base plate.
Claim 8
Dependent Claim
303 words
A motion transforming mechanism comprising a base plate, a driving gear rotatably borne by said base plate, a sliding plate slidably supported on said base plate, a spring connected between said base plate and sliding plate to bias said sliding plate to its rest position, a rack lever supported rotatably on said sliding plate and having a rack portion capable of meshing with said driving gear, a trigger lever supported rotatably on said sliding plate and engageable with said rack lever, an electromagnet secured on said base plate and capable of attracting said trigger lever, said rack lever being arranged so as to be meshed with said driving gear when said electromagnet is energized with one electric pulse and arranged so as to be disengaged from said driving gear only when said rack lever is pushed by an external force after de-energization of said electromagnet, and a member provided on said base plate and engageable with said rack lever, said rack lever being pushed by said trigger lever with only the force of rotation of said trigger lever and thereby said rack portion being meshed with said driving gear, when said trigger lever is attracted by said electromagnet, said rack portion being disengaged from the driving gear when said rack lever engages with said member, and said rack lever being held as disengaged by said trigger lever and said sliding plate being returned by said spring to its rest position when said rack lever is disengaged from said driving gear; a holding lever supported rotatably on said sliding plate and having a bent portion engageable with said ratchet wheel, and a stopper secured to said sliding plate to restrict the rotation of said holding lever, said ratchet wheel is rotated by one tooth by said holding lever when said sliding plate is moved.
Claim 9
Dependent Claim
303 words
A motion transforming mechanism comprising a base plate, a driving gear rotatably borne by said base plate, a sliding plate slidably supported on said base plate, a spring connected between said base plate and sliding plate to bias said sliding plate to its rest position, a rack lever supported rotatably on said sliding plate and having a rack portion capable of meshing with said driving gear, a trigger lever supported rotatably on said sliding plate and engageable with said rack lever, an electromagnet secured on said base plate and capable of attracting said trigger lever, said rack lever being arranged so as to be meshed with said driving gear when said electromagnet is energized with one electric pulse and arranged so as to be disengaged from said driving gear only when said rack lever is pushed by an external force after de-energization of said electromagnet, and a member provided on said base plate and engageable with said rack lever, said rack lever being pushed by said trigger lever with only the force of rotation of said trigger lever and thereby said rack portion being meshed with said driving gear, when said trigger lever is attracted by said electromagnet, said rack portion being disengaged from the driving gear when said rack lever engages with said member, and said rack lever being held as disengaged by said trigger lever and said sliding plate being returned by said spring to its rest position when said rack lever is disengaged from said driving gear; a holding lever supported rotatably on said sliding plate and having a bent portion engageable with said ratchet wheel, and a stopper secured to said sliding plate to restrict the rotation of said holding lever, said ratchet wheel is rotated by one tooth by said holding lever when said sliding plate is moved.
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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) | 1980-06-13 | 1980-12-13 | 1981-06-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-06-13 | 1984-12-13 | 1985-06-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-06-13 | 1988-12-13 | 1989-06-14 | $7700.00 | Window Closed / Lapsed |