US3948515A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Round trampoline
Assignee: TEMPLE BAPTIST CHURCH
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Filing: 1974-04-03
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Granted: 1976-04-06
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Expires: 1994-04-03
Abstract
Abstract A round trampoline having a sectional, substantially circular frame to which a circular mat is resiliently attached to the frame by a plurality of radially arranged springs. The mat comprises a pair of strips arranged perpendicularly to one another to form a reinforced center jumping area. The frame sections advantageously fit together in a double joint arrangement which affords great rigidity to the structure.
Inventors
- 👤 Harold L. McNeil
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 23:00
CPC Classifications
A; A63; A63B; A63B5/00; A63B5/11; A63B21/00; A63B21/02; A63B21/023
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
115 words
A round trampoline, comprising, in combination: a. a sectional, substantially circular frame, the frame including a plurality of sections each formed by a pair of arcuate rails connected together to form a double rail, one of the rails staggered with respect to the other of the rails in order to form a staggered joint with an adjoining frame section and to lock the joint and prevent rotation or flexation of the adjoining sections; b. leg means provided on the sections of the frame for supporting the frame on a support surface; c. fastener means connecting the sections of the frame together; d. a mat; and e. resilient means for connecting the mat to the frame.
Claim 2
Dependent Claim
115 words
A round trampoline, comprising, in combination: a. a sectional, substantially circular frame, the frame including a plurality of sections each formed by a pair of arcuate rails connected together to form a double rail, one of the rails staggered with respect to the other of the rails in order to form a staggered joint with an adjoining frame section and to lock the joint and prevent rotation or flexation of the adjoining sections; b. leg means provided on the sections of the frame for supporting the frame on a support surface; c. fastener means connecting the sections of the frame together; d. a mat; and e. resilient means for connecting the mat to the frame.
Claim 3
Dependent Claim
28 words
A structure as defined in claim 1, wherein the leg means includes U-shaped leg sections, with each frame section having a one of the leg sections affixed thereto.
Claim 4
Dependent Claim
22 words
A structure as defined in claim 2, wherein the fastener means includes a male-female coupling at each meeting point of adjacent rails.
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) | 1979-04-06 | 1979-10-06 | 1980-04-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-04-06 | 1983-10-06 | 1984-04-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-04-06 | 1987-10-06 | 1988-04-06 | $7700.00 | Window Closed / Lapsed |