Chairs and seats – Bottom or back with means to alter contour
Patent
1978-10-03
1982-09-21
Frazier, Roy D.
Chairs and seats
Bottom or back with means to alter contour
A47C 746
Patent
active
043503888
ABSTRACT:
A chair backrest having a rigid rectangular base plate and a flexible back support member attached to but movable relative to the base plate, and a spacer between the base plate and the support member, which spacer is movable to adjust the contour of the support member, cooperating locking members being provided on the base plate and spacer to lock the spacer in a number of chosen positions.
REFERENCES:
patent: 2118323 (1938-05-01), Murphy
patent: 2756809 (1956-07-01), Endresen
patent: 2843195 (1958-07-01), Barvaeus
patent: 2894565 (1959-07-01), Conner
patent: 3642319 (1972-02-01), Berchicci
patent: 3663055 (1972-05-01), Gale
patent: 3762769 (1973-10-01), Poschl
patent: 3990742 (1976-11-01), Glass
Frazier Roy D.
Spina-Trac AB
Wray James C.
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