Shock-attenuating seamless surface system for use under and arou

Details Shock-attenuating seamless surface system for use under and arou Shock-attenuating seamless surface system for use under and arou

1989-07-10

1991-02-12

Chilcot, Jr., Richard E.

Undertaking

272109, 404 32, A63B 7102

Patent

active

049918346

ABSTRACT:
Shock-attenuating seamless surface systems for use under and around playground equipment can be either installed on a base or installed in a recess in the base such that an integrated installation is obtained.
All systems have a surface layer with a bottom and outer edges; ribs extending from the bottom of the surface layer for defining an array of air-filled cells affixed to the bottom of the surface layer; and a first layer of sealer and an aggregate spread over the surface layer, the outer edges, and the base immediate to the surface system.
More complex systems may include one or more of the following: a plurality of median ribs extending a shorter distance from the bottom of the surface layer than the defining ribs in order to enhance and make consistent attenuating characteristics upon impact to the surface layer, to allow internal venting, and to facilitate conformity to the base; a void area left in place of at least one median rib in order to facilitate cutting through the surface layer; a second layer of sealer spread under the array of air-filled cells and above the base in order to prevent the escape of air therefrom upon impact thereto and hold the cells in a substantially vertical orientation with respect to the base; a sloping outer edge surrounding all sides to help prevent tripping and to facilitate access by handicapped persons; and a beveled outer edge surrounding all sides for facilitating attachment to either an identical surface or the base.

REFERENCES:
patent: 957387 (1910-05-01), Stedman
patent: 2999431 (1961-09-01), Mitchell
patent: 3251076 (1966-05-01), Burke
patent: 3846945 (1974-11-01), Roby
patent: 4557475 (1985-12-01), Donovan
patent: 4572700 (1986-02-01), Mantarro et al.

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