Exercise mat

Details Exercise mat Exercise mat

1983-09-02

1986-03-04

Schofer, Joseph L.

Stock material or miscellaneous articles

Structurally defined web or sheet

Including aperture

428 72, 428137, 428218, 4283166, 4283186, 5420, 5481, B32B 326

Patent

active

045741018

ABSTRACT:
An exercise mat consisting of laminated outer and core layers of closed-cell plastic foam having different selected densities. A relatively thick central layer is so configured that air chambers are formed bounded by it and one or both of the outer layers. These chambers may be constituted of air cylinders passing vertically through the central layer or of horizontal slots formed on a surface or surfaces of the central layer. The air chambers can be of any suitable predetermined size and spacing. The mat may be configured to permit folding by maintaining one of the outer layers continuous to form a hinge at a point or points where the core layer and other outer layers are discontinuous.

REFERENCES:
patent: 3016317 (1958-06-01), Brunner
patent: 3818522 (1974-06-01), Schuster
patent: 4137583 (1979-02-01), Baldwin
patent: 4147828 (1979-04-01), Heckel et al.
patent: 4263727 (1981-04-01), Bender et al.
patent: 4357725 (1982-11-01), Ahlm

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