Frames for the backs of seats and the like and to their manufact

Details Frames for the backs of seats and the like and to their manufact Frames for the backs of seats and the like and to their manufact

1991-12-18

1993-10-05

Cranmer, Laurie K.

Chairs and seats

Bottom or back

Framework

297463, A47C 702

Patent

active

052498417

ABSTRACT:
A rigid frame for use as framework in the back of a car seat is constituted by a shell which is itself built up by assembling together two half-shells (3) of stamped sheet metal along their juxtaposed edge flanges, which flanges extend respectively around an inside perimeter and an outer perimeter of each of the half-shells. A major portion at least of the length of the juxtaposed flanges of the half-shells is rolled up to form tubes (6, 7) of closed circular section.

REFERENCES:
patent: 2550479 (1951-04-01), Hoven
patent: 3292187 (1966-12-01), Bessler
patent: 3323151 (1967-06-01), Lerman
patent: 4509796 (1985-04-01), Takagi
patent: 5350390 (1982-09-01), Ogawa

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