US3593995A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Spring-coupled rings for amusement
Assignee: Individual
•
Filing: 1969-10-01
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Granted: 1971-07-20
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Expires: 1989-10-01
Abstract
Abstract Amusement and agility-developing means comprising a plurality of generally circular toroidal structures including a first generally toroidal member having a certain predetermined diameter and a number of additional toroidal structures, each additional structure having a diameter greater than its neighbor, and resilient coupling means interposed between adjacent toroidal members at substantially equal arcuate dispositions about the periphery of each of the toroidal structures. The unit preferably has at least three resilient coupling means interposed between adjacent toroidal members.
Inventors
- 👤 Robert J Eckstrom
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 00:21
CPC Classifications
A; A63; A63B; A63B19/00; A63B2208/00; A63B2208/12
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
68 words
Amusement and agility-developing means comprising: a. a plurality of generally cirCular toroidal structures including a first generally toroidal member having a certain predetermined diameter and a series of additional toroidal structures, each member of the series having a diameter greater than its neighbor; and b. resilient coupling means interposed between adjacent toroidal structures at at least three substantially equal arcuate dispositions about the periphery of said toroidal members.
Claim 2
Dependent Claim
68 words
Amusement and agility-developing means comprising: a. a plurality of generally cirCular toroidal structures including a first generally toroidal member having a certain predetermined diameter and a series of additional toroidal structures, each member of the series having a diameter greater than its neighbor; and b. resilient coupling means interposed between adjacent toroidal structures at at least three substantially equal arcuate dispositions about the periphery of said toroidal members.
Claim 3
Dependent Claim
25 words
The amusement and agility-developing means as defined in claim 1 being particularly characterized in that said generally circular toroidal structures are fabricated from molded polyethylene.
Claim 4
Dependent Claim
28 words
The amusement and agility-developing means as defined in claim 1 being particularly characterized in that said circular toroidal structures have diameters which increase in a regular stepped series.
Claim 5
Dependent Claim
22 words
The amusement and agility-developing mans as defined in claim 1 being particularly characterized in that said device includes four circular toroidal structures.
Claim 6
Dependent Claim
35 words
The amusement and agility-developing means as defined in claim 1 being particularly characterized in that said resilient coupling means consists of four resilient members disposed at 90* intervals about the periphery of said toroidal structures.
Claim 7
Dependent Claim
33 words
The amusement and agility-developing means as defined in claim 5 being particularly characterized in that said resilient coupling means have a programmed resiliency which decreases as the diameter of the toroidal structures increases.
Claim 8
Dependent Claim
35 words
The amusement and agility-developing means as defined in claim 1 being particularly characterized in that said resilient coupling means are capable of supporting the weight of the circular toroidal structures without exceeding their elastic limit.
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) | 1974-07-19 | 1975-01-18 | 1975-07-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-07-19 | 1979-01-18 | 1979-07-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-07-19 | 1983-01-18 | 1983-07-20 | $7700.00 | Window Closed / Lapsed |