Chairs and seats – Bottom or back – Contoured back
Patent
1994-02-16
1995-12-12
Brown, Peter R.
Chairs and seats
Bottom or back
Contoured back
2972844, 2974523, 5640, A47C 746
Patent
active
054743621
ABSTRACT:
Cushions for chairs and the like, having a firm internal support member to support key parts of the user's body such as the lumbar region of the back. These cushions are comprised of: a relatively soft cushion material on the body contacting portion of the cushion, which may or may not be part of; an elastic polyurethane foam type cushion material having a generally tubular cavity or hollow of a predetermined size, shape, and location; and a generally firmer elastic polyurethane foam type internal support member strategically shaped and located in the cavity or hollow of the cushion mentioned above. The cushions are designed for maximum user comfort with the body contacting surface of the cushion being relatively soft, but at the same time the cushions for the back, support the lumbar region so that the user's spine will be in the proper position to minimize strain and discomfort. Essentially the cushions more evenly distribute the load of the person sitting on them in such a way that the back etc. is properly aligned to minimize strain and fatigue. The cushions can be made from slab stock polyurethane foam type materials, can be used with other materials, can be made in a wide variety of shapes and sizes, and can be used in a number of different seating applications. Also, a method of making the cushions is disclosed using an electric knife with the capability of piercing the cushion body to create the cavity mentioned above.
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