Static structures (e.g. – buildings) – Relatively yieldable preformed separator
Patent
1993-02-03
1994-04-05
Friedman, Carl D.
Static structures (e.g., buildings)
Relatively yieldable preformed separator
52403, 52480, E04F 1502
Patent
active
052994015
ABSTRACT:
The invention is for an athletic flooring system wherein the flooring substructures are proportioned and positioned so as to give to the flooring system preferred properties in point and area elasticity. The subfloor is made up of a first and a second wood subfloor wherein the first subfloor is less continuous and more elastic than the second subfloor. The subfloors act in cooperation with a pad and with void volumes distributed in the subfloor to give the flooring system elastic properties that will render the flooring system DIN certifiable under the DIN 18032, part 2, tests.
REFERENCES:
patent: 3828503 (1974-08-01), Hofmann
patent: 4443989 (1984-04-01), Silvey et al.
patent: 4644720 (1987-02-01), Schneider
patent: 4879857 (1989-11-01), Peterson et al.
patent: 4890434 (1990-01-01), Niese
patent: 5016413 (1991-05-01), Coonihan
Canfield Robert J.
Friedman Carl D.
Johnson Russell L.
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