Patent US3696558A successfully refreshed from Google Patents.
US3696558A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Starting switch structure in a model plane
Assignee: Mabuchi Motor Co Ltd
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Filing: 1971-12-07
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Granted: 1972-10-10
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Expires: 1991-12-07
Abstract
Abstract A starting switch structure comprising a pair of fixed and movable contact plates adapted to be brought into contact with each other by pulling a control wire, a miniature electric motor for rotating a propeller and a dry cell all of which are mounted on the plane electrically connected to form an electric circuit. Such starting switch structure enables the model plane to be started by a single operator without an aid of an assistant by simply pulling the control wire from the distance. It weighs light, ensures a long period of life, and is simply constructed and manufactured at a low cost.
Inventors
- 👤 Kenichi Mabuchi
- 👤 Yoshihisa Tsuchimochi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 10:14
CPC Classifications
A; A63; A63H; A63H27/00; A63H27/04
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
108 words
A starting switch structure in a model plane comprising a control wire extended from control grip held by an operator and fitted at the other end to a plane body; a fixed contact plate fixedly mounted on the body; a movable contact plate provided ordinarily apart from said fixed contact plate and adapted to be brought into contact with said fixed contact plate by pulling said control wire; a miniature motor mounted on the body for rotating a propeller; and a dry cell accomodated in the body, said fixed contact plate, movable contact plate, miniature motor and dry cell being electrically connected thereby to form an electric circuit.
Claim 2
Dependent Claim
108 words
A starting switch structure in a model plane comprising a control wire extended from control grip held by an operator and fitted at the other end to a plane body; a fixed contact plate fixedly mounted on the body; a movable contact plate provided ordinarily apart from said fixed contact plate and adapted to be brought into contact with said fixed contact plate by pulling said control wire; a miniature motor mounted on the body for rotating a propeller; and a dry cell accomodated in the body, said fixed contact plate, movable contact plate, miniature motor and dry cell being electrically connected thereby to form an electric circuit.
Claim 3
Dependent Claim
76 words
A starting switcH structure in a model plane as claimed in claim 1 and adapted for a G-control grip type model plane wherein said movable contact plate is made of a resilient material and fixed to the fixed contact plate at their base portions through an insulating plate, said control wire being fastened to a free end of said movable contact plate thereby to bring the movable contact plate into contact with said fixed contact plate.
Claim 4
Dependent Claim
87 words
A starting switch structure as claimed in claim 1 and adapted for a G-control grip type model plane wherein said fixed contact plate is fitted to an insulating plate fixed to the body and having an axis upstandingly provided thereon, said movable contact plate being rotatably mounted on the insulating plate around said axis and provided with said control wire to bring the movable contact plate into contact with said fixed contact plate, a coil spring being provided around said axis to keep the electric circuit open.
Claim 5
Dependent Claim
114 words
A starting switch structure in a model plane as claimed in claim 1 and adapted for a U-control grip type model plane wherein said movable contact plate is made of a resilient material, a rotary plate having a hook portion and three projections being rotatably fitted to the body, said hook portion being adapted to engage with said movable contact plate to keep the electric circuit open, two control wires being fastened to two of said projections respectively to rotate the rotary plate, a rod being provided connecting the other projection to an elevator thereby to effect an upward or downward movement of said elevator in coincidence with the rotation of the rotary plate.
References Cited (Backward Citations)
US3375605A
Cited
US3579905A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-10-10 | 1976-04-10 | 1976-10-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-10-10 | 1980-04-10 | 1980-10-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-10-10 | 1984-04-10 | 1984-10-10 | $7700.00 | Window Closed / Lapsed |