Patent US4185409A successfully refreshed from Google Patents.
US4185409A
Expired / Lapsed
US
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Teeter-totter track section for model vehicles
Assignee: Individual
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Filing: 1978-04-17
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Granted: 1980-01-29
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Expires: 1998-04-17
Abstract
Abstract A teeter-totter or see-saw track section including a base part interposable in a track system and a super track part mounted on the base part for oscillation about a generally horizontal transverse axis, together with electrical connection means between the base and super track parts to enable an operator to effect powered control of a model vehicle on the super track part.
Inventors
- 👤 Richard C. M. Cheng
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 09:59
CPC Classifications
A; A63; A63H; A63H18/00; A63H18/02; A63H18/028
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
140 words
A see-saw track section interposable in a model vehicle track system having electrical conductors, said see-saw track section comprising a base track part having electrical conductors and mechanically and electrically interposable in the track system, a super track part having electrical conductors and located longitudinally over said base track part, means mounting said super track part for swinging movement about a transverse axis to alternatively place either end of super track part downwardly on said base track part and the opposite end upwardly spaced over said base track part, and electrical connection means between the conductors of said base and said super track part, for controlling movement of an electrically powered vehicle from said base track part onto the downward end of said super track part and upwardly therealong past said axis for gravitational swinging of said opposite end downwardly.
Claim 2
Dependent Claim
140 words
A see-saw track section interposable in a model vehicle track system having electrical conductors, said see-saw track section comprising a base track part having electrical conductors and mechanically and electrically interposable in the track system, a super track part having electrical conductors and located longitudinally over said base track part, means mounting said super track part for swinging movement about a transverse axis to alternatively place either end of super track part downwardly on said base track part and the opposite end upwardly spaced over said base track part, and electrical connection means between the conductors of said base and said super track part, for controlling movement of an electrically powered vehicle from said base track part onto the downward end of said super track part and upwardly therealong past said axis for gravitational swinging of said opposite end downwardly.
Claim 3
Dependent Claim
50 words
A see-saw track section according to claim 1, the upper surface of said base track part and the under surface of said super track part being configured for mating engagement to define at said base track part and the downward end of said super track part a smoothly merging ramp.
Claim 4
Dependent Claim
43 words
A see-saw track section according to claim 2, said electrical connection means including structure on said base and super track parts whereby said super track part conductors rest on said base track part conductors at the downward end of said super track part.
Claim 5
Dependent Claim
29 words
A see-saw track section according to claim 1, said electrical connection means comprising resilient conductive means interposed in resiliently deflected condition between said super and base track part conductors.
Claim 6
Dependent Claim
31 words
A see-saw track section according to claim 4, said resilient conductive means each comprising a resilient leaf having its opposite ends in interengagement with said super and base track part conductors.
Claim 7
Dependent Claim
21 words
A see-saw track section according to claim 5, said resilient leaves each havings its opposite ends notched for said interfitting engagement.
Claim 8
Dependent Claim
20 words
A see-saw track section according to claim 5, said super and base track part conductors being notched for said interengagement.
Claim 9
Dependent Claim
36 words
A see-saw track section according to claim 1, said mounting means comprising gudgeons outstanding from one of said super and base track parts, and pintles outstanding from the other of said track parts into said gudgeons.
Claim 10
Dependent Claim
60 words
A see-saw track section according to claim 8, said electrical connection means comprising resilient leaves each having its opposite ends in interfitting engagement with said super and base track part conductors, and a support structure carried by said one of said super and base track parts for supporting said leaves generally upright to facilitate assembly of said gudgeons and pintles.
References Cited (Backward Citations)
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Cited
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US1523244A
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US1715891A
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US2815872A
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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) | 1983-01-28 | 1983-07-30 | 1984-01-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-01-28 | 1987-07-30 | 1988-01-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-01-28 | 1991-07-30 | 1992-01-29 | $7700.00 | Window Closed / Lapsed |