Stock material or miscellaneous articles – Structurally defined web or sheet – Including variation in thickness
Patent
1989-02-03
1991-06-11
Ryan, Patrick
Stock material or miscellaneous articles
Structurally defined web or sheet
Including variation in thickness
428167, 428178, 428188, 4283044, 2267, 5417, 5431, 5442, 5449, 267142, 267153, B32B 320, A47G 906
Patent
active
050231286
ABSTRACT:
Am impact-absorbing pad includes a plurality of parallel, elongated, individually sealed hollow pneumatic tubes with coextensive webbing. Each tube includes opposing lengthwise interior ridges. Upon compression of a tube, the trapped air is compressed and the ridges contact each other, resisting compression and pressing outwardly to spread the force of impact.
REFERENCES:
patent: 2657385 (1953-11-01), Cushman et al.
patent: 2822554 (1958-02-01), Wenzelberger
patent: 4118019 (1978-10-01), Weir
patent: 4142252 (1979-03-01), Storer
patent: 4172749 (1979-10-01), Liggett
patent: 4408365 (1983-10-01), Palmer
patent: 4513048 (1985-04-01), Kaube et al.
patent: 4533583 (1985-08-01), May
patent: 4671028 (1987-06-01), Figone
Competitive Athletics Technology, Inc.
Hooker Thomas
Loney Donald J.
Ryan Patrick
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