Patent US3795409A successfully refreshed from Google Patents.
US3795409A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Wheeled coasting device
Assignee: Individual
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Filing: 1972-04-28
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Granted: 1974-03-05
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Expires: 1992-04-28
Abstract
Abstract A wheeled coasting device having a one-piece molded plastic thin shell construction. The device has a riding platform and front and rear integral resilient suspension arms which extend downwardly and centrally. The suspension arms mount two parallel axles, each of which carries a wide cylindrically shaped ridged tire. When the rider shifts his weight laterally, the platform tilts, the suspension arms pivot, and the tires cock in opposite directions causing the coasting device to turn in the direction that the rider is leaning.
Inventors
- 👤 P Cudmore
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 23:45
CPC Classifications
A; A63; A63C; A63C17/00; A63C17/01; A63C17/014; A63C17/016
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
157 words
A wheeled coasting device comprising: a. a platform adapted to support a child rider; b. a front suspension means depending rearwardly from the front of said platform, and a rear suspension means depending frontwardly from the rear of said platform, each said suspension means including suspension arm portions which are laterally spaced apart and are substantially parallel to each other, each said suspension arm portion being biased to resistingly permit the lower end of said arm portion to resiliently swing in a limited arc about the upper end of said arm portion in a substantially front to rear plane; c. a pair of parallel wheel axles supportably mounted in the lower ends of said suspension arm portions; and d. at least one ground-engaging wheel carried by each said axle; whereby when the rider shifts his weight laterally to tilt the platform, the wheels cock oppositely to turn the coasting device in the direction of the weight shift.
Claim 2
Dependent Claim
157 words
A wheeled coasting device comprising: a. a platform adapted to support a child rider; b. a front suspension means depending rearwardly from the front of said platform, and a rear suspension means depending frontwardly from the rear of said platform, each said suspension means including suspension arm portions which are laterally spaced apart and are substantially parallel to each other, each said suspension arm portion being biased to resistingly permit the lower end of said arm portion to resiliently swing in a limited arc about the upper end of said arm portion in a substantially front to rear plane; c. a pair of parallel wheel axles supportably mounted in the lower ends of said suspension arm portions; and d. at least one ground-engaging wheel carried by each said axle; whereby when the rider shifts his weight laterally to tilt the platform, the wheels cock oppositely to turn the coasting device in the direction of the weight shift.
Claim 3
Dependent Claim
15 words
The wheeled coasting device of claim 1 wherein said platform has a substantially rectangular shape.
Claim 4
Dependent Claim
20 words
The wheeled coasting device of claim 1 wherein said front and rear suspension means are integral extensions of said platform.
Claim 5
Dependent Claim
37 words
The wheeled coasting device of claim 3 wherein the junction between said platform and said suspension means warps in response to the shifting of the rider''s weight to resistingly permit the swing of said supension arm portion.
Claim 6
Dependent Claim
56 words
The wheeled coasting device of claim 3 wherein each said suspension arm portion has an approximately 90* twist therein, said suspension arm portion having its major horizontal dimension parallel to the front of said platform at its upper end, and having its major horizontal dimension parallel to the side of said platform at its lower end.
Claim 7
Dependent Claim
31 words
The wheeled coasting device of claim 1 wherein each said axle carries a single cylindrical wheel, each said wheel having a tread which is wider than the diameter of said wheel.
Claim 8
Dependent Claim
35 words
The wheeled coasting device of claim 6 wherein each said wheel includes a low pressure pneumatic tire having a corrugated tread, said corrugations running around said tire in parallel planes normal to said wheel axle.
Claim 9
Dependent Claim
21 words
The wheeled coasting device of claim 1 wherein said platform and suspension means comprise a one-piece molded plastic thin shell structure.
Claim 10
Dependent Claim
28 words
The wheeled coasting device of claim 1 wherein each said suspension arm portion is independently swingable in response to shifts of the rider''s weight distribution on said platform.
Claim 11
Dependent Claim
27 words
The wheeled coasting device of claim 1 wherein a roughened non-slip texture is provided on the upper surface of said platform to improve its safe footing characteristics.
Claim 12
Dependent Claim
15 words
The wheeled coasting device of claim 1 wherein said suspension means act as shock absorbers.
Claim 13
Dependent Claim
34 words
The wheeled coasting device of claim 1 wherein said platform has a slightly upwardly concave shape and downturned side edges, said oppositely curved platform portions having a cooperative relationship which structurally stiffens said platform.
Claim 14
Dependent Claim
18 words
The wheeled coasting device of claim 1 wherein said platform has the substantial shape of a rider''s foot.
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) | 1977-03-04 | 1977-09-03 | 1978-03-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-03-04 | 1981-09-03 | 1982-03-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-03-04 | 1985-09-03 | 1986-03-05 | $7700.00 | Window Closed / Lapsed |