Chairs and seats – Bottom or back – Framework
Patent
1987-09-29
1989-05-09
Anderson, Philip
Chairs and seats
Bottom or back
Framework
264 452, 264 466, 264222, 264314, 297452, A47C 720, B29C 6722, B29C 4312
Patent
active
048283258
ABSTRACT:
An orthotic support system is embodied as cooperating seat and back cushion elements for assembly into a wheelchair frame. These cushion elements are custom-fitted to the individual patient by injecting an incipiently reacting and foaming, fluorocarbon-blown polyurethane chemical system into the space between a rigid mold box and an elastic membrane which is fitted over the open face of the mold box and which is deformably engaged by the appropriate portions of the patient's torso. The foaming mixture is injected in predetermined excess volume and expands against the physical resistance of the patient's body where contact is made with the corresponding regions of the elastic membrane; and this forcible engagement produces selective densification of the foam where a high degree of body support is required. Elsewhere, the foam expands more freely and stretchably inflates the membrane to generate graduatedly less dense regions matably contoured to fit or partially embrace the patient. For body alignment purposes, specialized bolsters are integrally formed in the cushion elements.
REFERENCES:
patent: 2150287 (1939-03-01), Minor
patent: 2552039 (1951-05-01), Flogaus
patent: 2847061 (1958-08-01), Morton
patent: 3511537 (1970-05-01), Ackermann
patent: 3751111 (1973-08-01), Taylor et al.
patent: 3774968 (1973-11-01), Fenton
patent: 3778104 (1973-12-01), Kusters
patent: 4123213 (1980-07-01), Burnett
patent: 4327046 (1982-04-01), Davis et al.
patent: 4347213 (1982-08-01), Rogers, Jr.
patent: 4622185 (1986-11-01), Kostich
Hobson, Douglas A. and Olunwa M. Nwaobi, "The Relationship Between Posture and Ischial Pressure for the High Risk Population," Paper presented at 1985 Resna Meeting, Memphis, Tenn., June 24-28th, 1985, 4 pages.
Anderson Philip
University of Tennessee Research Corporation
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