US3717949A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tethered aerial tops
Assignee: Individual
•
Filing: 1971-05-14
•
Granted: 1973-02-27
•
Expires: 1991-05-14
Abstract
Abstract A yo-yo construction wherein the side disc members of the yo-yo spool are of integrally molded, substantially hollow construction is described. The spool disc members are formed with concave outer wall portions which are reinforced with a plurality of equidistantly peripherally spaced, diametrically extending web portions the converging inner ends of which merge to provide an axially extending cylindrical sleeve defining a cylindrical recess for the friction-fit reception of the interconnecting pin in the assembly of the yo-yo.
Inventors
- 👤 J Radovan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 04:59
CPC Classifications
A; A63; A63H; A63H1/00; A63H1/30
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
247 words
In a Yo-Yo, the combination comprising, a pair of circular side disc members, an interconnecting pin, means including said inteRconnecting pin for retaining said side disc members in coaxially spaced disc position to provide a Yo-Yo pool, said pin extending coaxially between said side disc members, a string connected at one end to said pin and extending outwardly between said side disc members, said string connection being in the form of a loop permitting free slippage of said pin therein, said side disc members each being integrally formed and comprising a concave outer wall portion, a central, inwardly extending sleeve portion, and a plurality of at least 12 reinforcing rib portions within the concavity of said outer wall portion and joining interior portions of said outer wall portion with said sleeve portion, the sleeve portions of said side disc members defining coaxially extending cylindrical recesses, the end of said pin being received within said cylindrical recesses, the diameter of said pin being such as to permit press-fitting of the ends thereof into said cylindrical recesses for friction fit retention therein, said plurality of reinforcing rib portions extend radially between said sleeve portion and the outer periphery of said concave outer wall portion in each of said side disc members, and being equidistantly peripherally spaced thereabout, the outer edges of said plurality of rib portions and the outer end of said sleeve portion lying in a plane in common with the peripheral edge of said side disc member.
Claim 2
Dependent Claim
247 words
In a Yo-Yo, the combination comprising, a pair of circular side disc members, an interconnecting pin, means including said inteRconnecting pin for retaining said side disc members in coaxially spaced disc position to provide a Yo-Yo pool, said pin extending coaxially between said side disc members, a string connected at one end to said pin and extending outwardly between said side disc members, said string connection being in the form of a loop permitting free slippage of said pin therein, said side disc members each being integrally formed and comprising a concave outer wall portion, a central, inwardly extending sleeve portion, and a plurality of at least 12 reinforcing rib portions within the concavity of said outer wall portion and joining interior portions of said outer wall portion with said sleeve portion, the sleeve portions of said side disc members defining coaxially extending cylindrical recesses, the end of said pin being received within said cylindrical recesses, the diameter of said pin being such as to permit press-fitting of the ends thereof into said cylindrical recesses for friction fit retention therein, said plurality of reinforcing rib portions extend radially between said sleeve portion and the outer periphery of said concave outer wall portion in each of said side disc members, and being equidistantly peripherally spaced thereabout, the outer edges of said plurality of rib portions and the outer end of said sleeve portion lying in a plane in common with the peripheral edge of said side disc member.
References Cited (Backward Citations)
US2463670A
Cited
US3156068A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-02-27 | 1976-08-28 | 1977-02-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-02-27 | 1980-08-28 | 1981-02-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-02-27 | 1984-08-28 | 1985-02-27 | $7700.00 | Window Closed / Lapsed |