Patent EP0171710A2 successfully refreshed from Google Patents.
US4137583A
Expired / Lapsed
US
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Gymnastic mat
Assignee: Baldwin Green Inc
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Filing: 1977-12-08
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Granted: 1979-02-06
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Expires: 1997-12-08
Abstract
Abstract A gymnastic mat capable of simple assembly and disassembly for compact storage. Cushioning material is contained within a readily disassemblable rigid frame. A cover of flexible material is attached to the top of the frame by elastic tie-down devices to contain the cushioning material within the frame and maintain a taut and wrinkle-free surface.
Inventors
- 👤 Beecher B. Baldwin
- 👤 Harold Higgins
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 17:37
CPC Classifications
A; A63; A63B; A63B6/00; A63C; A63C19/00; A63C19/04
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
180 words
A gymnastic mat including in combination: a frame having a peripheral rim comprising a plurality of separate rigid segments positioned side-by-side to provide an open interior; a pad of cushioning material within the interior of said frame, said pad of material substantially filling the interior of said frame; each of said segments has an upper portion and a lower portion, with said lower portion extending under said pad into said interior of said frame beyond said upper portion; a cover of flexible material and having a top surface; and a plurality of resilient connectors fixed to said cover along the edges thereof and below said top surface, with said connectors and frame segments having interengaging means attaching said cover to said frame with said resilient connectors stretched and maintaining said cover in tension with a smooth top surface, said cover and connectors imparting an inward acting force on said frame, said inward acting force serving to compress said pad of cushioning material, said pad of cushioning material imparting an equal and opposite outward acting force on said frame and cover.
Claim 2
Dependent Claim
180 words
A gymnastic mat including in combination: a frame having a peripheral rim comprising a plurality of separate rigid segments positioned side-by-side to provide an open interior; a pad of cushioning material within the interior of said frame, said pad of material substantially filling the interior of said frame; each of said segments has an upper portion and a lower portion, with said lower portion extending under said pad into said interior of said frame beyond said upper portion; a cover of flexible material and having a top surface; and a plurality of resilient connectors fixed to said cover along the edges thereof and below said top surface, with said connectors and frame segments having interengaging means attaching said cover to said frame with said resilient connectors stretched and maintaining said cover in tension with a smooth top surface, said cover and connectors imparting an inward acting force on said frame, said inward acting force serving to compress said pad of cushioning material, said pad of cushioning material imparting an equal and opposite outward acting force on said frame and cover.
Claim 3
Dependent Claim
40 words
A mat as defined in claim 1 wherein said resilient connectors comprise elastic cords fixed at one end to the underside of said cover and having an enlarged portion at the other end for engaging a notch in said frame.
Claim 4
Dependent Claim
68 words
A mat as defined in cliam 1 wherein: each of said segments of said frame has a plurality of notches in the upper portion thereof; and said resilient connectors comprise elastic cords fixed at one end to said cover below said top surface thereof and having a knot at the other end, with said cords positioned in corresponding notches stretching said cords and placing said cover in tension.
Claim 5
Dependent Claim
68 words
A mat as defined in cliam 1 wherein: each of said segments of said frame has a plurality of notches in the upper portion thereof; and said resilient connectors comprise elastic cords fixed at one end to said cover below said top surface thereof and having a knot at the other end, with said cords positioned in corresponding notches stretching said cords and placing said cover in tension.
Claim 6
Dependent Claim
20 words
A mat as defined in claim 1 wherein said pad of cushioning material further comprises a plurality of pad elements.
References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1982-02-05 | 1982-08-07 | 1983-02-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-02-05 | 1986-08-07 | 1987-02-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-02-05 | 1990-08-07 | 1991-02-06 | $7700.00 | Window Closed / Lapsed |