Seat cushion structure

Details Seat cushion structure Seat cushion structure

2011-05-24

2011-05-24

Nelson, Jr., Milton (Department: 3636)

Chairs and seats

Bottom or back

Including a ventilating means

C005S652100

Reexamination Certificate

active

07946655

ABSTRACT:
A seat cushion structure is formed by combining upper and lower substrates made of a soft elastic material. Recessed spaces are formed on the upper and lower substrates respectively. Protrusions are formed in the recessed spaces. A flow passage is formed between every two protrusions. An inwardly concave air chamber is evacuated from each protrusion within a contact range of supporting a sitter's buttock. A shallow cut groove is formed on a side of the inwardly concave air chamber. A concave arc form corresponding to the shape of the buttock is disposed on an external surface of the upper substrate in contact with the buttock, such that when the upper and lower substrates are combined integrally, the protrusion of the upper substrate is disposed precisely above an upper periphery of the inwardly concave air chamber of the protrusion of the lower substrate.

REFERENCES:
patent: 3818522 (1974-06-01), Schuster
patent: 5294181 (1994-03-01), Rose et al.
patent: 7426767 (2008-09-01), Mossbeck
patent: 2005/0022305 (2005-02-01), Bieganek et al.
patent: 2009/0013472 (2009-01-01), Koffler et al.
patent: 2009/0058167 (2009-03-01), San Miguel et al.

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