Patent US4173839A successfully refreshed from Google Patents.
US4173839A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Aerodynamic toy
Assignee: Individual
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Filing: 1977-12-19
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Granted: 1979-11-13
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Expires: 1997-12-19
Abstract
Abstract This invention is a disc-type, aerodynamic toy. This toy consists of a fabric center which can be altered by the owner to varying thicknesses and degrees of coverage for aerodynamic purposes. The fabric center is bounded by a rim into which the center is pressed. A smooth convex surface surrounds the center and rim. The smooth convex surface is bordered by a lip which is turned inwardly toward the center of the toy. The smooth surface combined with the heavy center of varying thickness, and degree of coverage, makes the toy extremely stable, a toy which the owner can alter to suit his or her aerodynamic requirements.
Inventors
- 👤 M. Jane Kovac
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 11:55
CPC Classifications
A; A63; A63H; A63H33/00; A63H33/18
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
125 words
A flight-stable, aerodynamic toy, comprising: a body element having an annular center section; a flexible fabric material fixed in said center section; a rim bounding said center section; a convex wall bounding said rim; said rim being tangential to said convex wall; and means joined to said wall and cooperative therewith to define a reentrant-type cavity, having a greater transverse dimension therewithin than at the entry of said cavity, to cause said cavity to retain flight-sustaining air therewithin; wherein said convex wall defines a convex surface which is smooth and devoid of any air-flow-disturbing protuberances and discontinuities; said wall has a given thickness; and said rim has a thickness greater than said given thickness, to rigidize and to lend hoop strength to said center section.
Claim 2
Dependent Claim
125 words
A flight-stable, aerodynamic toy, comprising: a body element having an annular center section; a flexible fabric material fixed in said center section; a rim bounding said center section; a convex wall bounding said rim; said rim being tangential to said convex wall; and means joined to said wall and cooperative therewith to define a reentrant-type cavity, having a greater transverse dimension therewithin than at the entry of said cavity, to cause said cavity to retain flight-sustaining air therewithin; wherein said convex wall defines a convex surface which is smooth and devoid of any air-flow-disturbing protuberances and discontinuities; said wall has a given thickness; and said rim has a thickness greater than said given thickness, to rigidize and to lend hoop strength to said center section.
Claim 3
Dependent Claim
24 words
A toy, according to claim 1, wherein: said material comprises means for accommodating therein an overlying and interwoven, patterned layer of other fabric material.
Claim 4
Dependent Claim
28 words
A toy, according to claim 1, wherein: said center section comprises a circular void formed in said body; and said fabric material fully traverses and fills said void.
Claim 5
Dependent Claim
37 words
A toy, according to claim 1, wherein: said reentrant-type cavity comprises an annular lip; and said lip has a thickness greater than said given thickness, to rigidize said cavity and to lend hoop strength to said toy.
Claim 6
Dependent Claim
24 words
A toy, according to claim 1, further including: means carried by said fabric material for altering the conduct of air through said center section.
Claim 7
Dependent Claim
27 words
A toy, according to claim 5, wherein: said air-conduct altering means comprises other fabric material interwoven through said center section to define a thickened fabric layer thereat.
Claim 8
Dependent Claim
15 words
A toy, according to claim 6, wherein: said thickened fabric layer comprises an artistic design.
Claim 9
Dependent Claim
54 words
A toy, according to claim 4, wherein: said lip is contiguous with said wall, and has a first inside diameter of a given dimension and a second inside diameter of another dimension; said second inside diameter is less than said first inside diameter; and said second inside diameter defines said entry of said cavity.
Claim 10
Dependent Claim
15 words
A toy, according to claim 6, wherein: said thickened fabric layer comprises a commercial-message design.
References Cited (Backward Citations)
US3900986A
Cited
US4115946A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1982-11-12 | 1983-05-14 | 1983-11-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-11-12 | 1987-05-14 | 1987-11-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-11-12 | 1991-05-14 | 1991-11-13 | $7700.00 | Window Closed / Lapsed |