US4557475A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cushioned activity surface with closed cell foam pad bonded to hard surface and rubber mat
Assignee: BREAKFALL Inc
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Filing: 1982-06-07
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Granted: 1985-12-10
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Expires: 2002-06-07
Abstract
Abstract An activity field is surfaced with a cushioned, resilient rubber mat over a hard undersurface. One area of the field is subject to participant impact potentially resulting in injury. That area is provided with a closed cell shock absorbing foam pad between the rubber mat and the hard undersurface to permit the mat to flex restrained by the foam pad to attenuate an impact. The rubber mat is bonded to the pad by a flexible adhesive and both the mat and the pad are bonded to said undersurface. The mat extends beyond the perimeter of the pad.
Inventors
- 👤 James P. Donovan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 21:44
CPC Classifications
A; A63; A63C; A63C19/00; A63C19/04; Y; Y10; Y10T; Y10T428/00; Y10T428/249921; Y10T428/249953; Y10T428/249976; Y10T428/249977; Y10T428/249981; Y10T428/249987; Y10T428/24999
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
148 words
An activity field surfaced with a cushioned, resilient rubber surface over a hard undersurface, one area of said field being subject to participant impact potentially resulting in injury, such area being provided with a closed cell shock absorbing foam pad between the rubber surface and the hard undersurface to permit the rubber surface to flex restrained by the foam pad to attenuate an impact, said surface being a mat bonded to the pad by a flexible adhesive and both the mat and the pad being bonded to said undersurface, said surface extending in all directions beyond the perimeter of the pad, said foam pad being a plurality of strips of closed cell foam and said mat being made up from a plurality of strips laid so as to avoid vertical alignment of joints in the mat with joints in the foam pad to which the mat is bonded.
Claim 2
Dependent Claim
148 words
An activity field surfaced with a cushioned, resilient rubber surface over a hard undersurface, one area of said field being subject to participant impact potentially resulting in injury, such area being provided with a closed cell shock absorbing foam pad between the rubber surface and the hard undersurface to permit the rubber surface to flex restrained by the foam pad to attenuate an impact, said surface being a mat bonded to the pad by a flexible adhesive and both the mat and the pad being bonded to said undersurface, said surface extending in all directions beyond the perimeter of the pad, said foam pad being a plurality of strips of closed cell foam and said mat being made up from a plurality of strips laid so as to avoid vertical alignment of joints in the mat with joints in the foam pad to which the mat is bonded.
Claim 3
Dependent Claim
70 words
A cushioned play and sport surface for use in areas likely to be impacted by users, comprising, a hard surface, a closed cell foam pad bonded to the hard surface, said foam pad being a compound of modified PVC with nitrile rubber, a resilient, cushioned rubber mat bonded to the foam pad, said mat being calendered and vulcanized with a base of polychloroprene rubber and mineral aggregates with stabilizing agents.
Claim 4
Dependent Claim
70 words
A cushioned play and sport surface for use in areas likely to be impacted by users, comprising, a hard surface, a closed cell foam pad bonded to the hard surface, said foam pad being a compound of modified PVC with nitrile rubber, a resilient, cushioned rubber mat bonded to the foam pad, said mat being calendered and vulcanized with a base of polychloroprene rubber and mineral aggregates with stabilizing agents.
Claim 5
Dependent Claim
108 words
A cushioned play and sport surface for use in areas likely to be impacted by users, comprising, a hard surface, a closed cell foam pad recessed into said hard surface and bonded to said hard surface, a resilient, cushioned rubber mat bonded to said foam pad and extending beyond the pad, said foam pad being a plurality of strips of closed cell foam and said mat being made up from a plurality of strips laid so as to avoid vertical alignment of joints in the mat with joints in the foam pad to which the mat is bonded, said mat being level across the padded and unpadded areas.
Claim 6
Dependent Claim
108 words
A cushioned play and sport surface for use in areas likely to be impacted by users, comprising, a hard surface, a closed cell foam pad recessed into said hard surface and bonded to said hard surface, a resilient, cushioned rubber mat bonded to said foam pad and extending beyond the pad, said foam pad being a plurality of strips of closed cell foam and said mat being made up from a plurality of strips laid so as to avoid vertical alignment of joints in the mat with joints in the foam pad to which the mat is bonded, said mat being level across the padded and unpadded areas.
Claim 7
Dependent Claim
120 words
A cushioned play and sport surface for use in areas likely to be impacted by users, comprising, a hard surface, a closed cell foam pad bonded to the hard surface, a resilient, cushioned rubber mat bonded to the foam pad, said foam pad being a plurality of strips of closed cell foam and said mat being made up from a plurality of strips laid so as to avoid vertical alignment of joints in the mat with joints in the foam pad to which the mat is bonded, said mat extending beyond said pad, the perimeter of said foam pad being beveled to achieve a transition to the unpadded mat, said mat being mitered to lie smoothly on the beveled corners.
Claim 8
Dependent Claim
120 words
A cushioned play and sport surface for use in areas likely to be impacted by users, comprising, a hard surface, a closed cell foam pad bonded to the hard surface, a resilient, cushioned rubber mat bonded to the foam pad, said foam pad being a plurality of strips of closed cell foam and said mat being made up from a plurality of strips laid so as to avoid vertical alignment of joints in the mat with joints in the foam pad to which the mat is bonded, said mat extending beyond said pad, the perimeter of said foam pad being beveled to achieve a transition to the unpadded mat, said mat being mitered to lie smoothly on the beveled corners.
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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) | 1988-12-09 | 1989-06-10 | 1989-12-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-12-09 | 1993-06-10 | 1993-12-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-12-09 | 1997-06-10 | 1997-12-10 | $7700.00 | Window Closed / Lapsed |