Chairs and seats – Bottom or back – Framework
Patent
1984-06-18
1986-03-04
Lyddane, William E.
Chairs and seats
Bottom or back
Framework
297180, 297DIG1, 297DIG3, 5468, A47C 718
Patent
active
045737401
ABSTRACT:
To assist in maintaining the high degree of cleanliness required by Federal standards in industrial clean rooms, an upholstered seat is provided having an attached bellows which receives air from the seat when the seat is compressed and from which air is returned to the seat as the seat expands. There is no escape of air from the seat and bellows to the atmosphere and no induction of air from the atmosphere to the seat or bellows.
REFERENCES:
patent: 3792501 (1974-02-01), Kery
patent: 4204657 (1980-05-01), Graham
patent: 4445241 (1984-05-01), Ender et al.
Binder Mark W.
Lyddane William E.
The Jasper Corporation
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