Patent US3744795A successfully refreshed from Google Patents.
US3744795A
Expired / Lapsed
US
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Toy race track
Assignee: Individual
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Filing: 1972-02-07
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Granted: 1973-07-10
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Expires: 1992-02-07
Abstract
Abstract In abstract, a preferred embodiment of this invention is a race track for toy vehicles wherein a plurality of magnets mounted beneath the surface of the race track move rapidly thereunder to pull the racing cars along. Since there is no predetermined track for each vehicle, skids, spin-outs and wrecks can occur as in real auto racing as well as cars passing each other as they race.
Inventors
- 👤 M Lipscomb
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 17:14
CPC Classifications
A; A63; A63H; A63H18/00; A63H18/10; A63H18/14
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
173 words
A spectator sport means comprising: at least one moveable unit; a defined track area having an upper surface and a lower surface; a source of magnetic influence disposed adjacent a portion of said lower surface and so constructed as to be a motivating force for said moveable units placed on said upper surface, the apparent speed of travel of said force being greater than the maximum speed at which said moveable units can travel without being affected by centrifugal force; and at least one banked area formed in the upper surface of said track, said area sloping downwardly from a portion of said upper surface not affected by said motivating force to a portion of said upper surface affected by said motivating force whereby such force will accelerate said units until centrifugal force moves the same to that portion of the banked area not affected by said motivating force, thereby allowing the units to lose speed and thus move down the bank and back into the area of influence of the motivating force.
Claim 2
Dependent Claim
173 words
A spectator sport means comprising: at least one moveable unit; a defined track area having an upper surface and a lower surface; a source of magnetic influence disposed adjacent a portion of said lower surface and so constructed as to be a motivating force for said moveable units placed on said upper surface, the apparent speed of travel of said force being greater than the maximum speed at which said moveable units can travel without being affected by centrifugal force; and at least one banked area formed in the upper surface of said track, said area sloping downwardly from a portion of said upper surface not affected by said motivating force to a portion of said upper surface affected by said motivating force whereby such force will accelerate said units until centrifugal force moves the same to that portion of the banked area not affected by said motivating force, thereby allowing the units to lose speed and thus move down the bank and back into the area of influence of the motivating force.
Claim 3
Dependent Claim
11 words
The means of claim 1 wherein the moveable units are vehicles.
Claim 4
Dependent Claim
25 words
The means of claim 1 wherein the motivating force is a multiplicity of magnets mechanically mounted for longitudinal travel beneath a portion of said track.
Claim 5
Dependent Claim
17 words
The means of claim 3 wherein said magnetic means includes a motor means for propelling said magnets.
Claim 6
Dependent Claim
32 words
The means of claim 1 wherein the motivating force is a multiplicity of electromagnets mounted beneath the upper surface of said track and being energized and deenergized, alternately, by a distributor means.
Claim 7
Dependent Claim
29 words
The means of claim 1 wherein a magnetically influenceable member is mounted in the front portion of each of said moveable units whereby relatively straight tracking movement is assured.
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) | 1976-07-09 | 1977-01-08 | 1977-07-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-07-09 | 1981-01-08 | 1981-07-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-07-09 | 1985-01-08 | 1985-07-10 | $7700.00 | Window Closed / Lapsed |