Apparatus for the attachment of a lower back support upholstery

Details Apparatus for the attachment of a lower back support upholstery Apparatus for the attachment of a lower back support upholstery

1984-01-13

1986-07-29

McCall, James T.

Chairs and seats

Bottom or back

Framework

297291, 297300, 297460, A47C 702

Patent

active

046028188

ABSTRACT:
An apparatus for the attachment of a lower back support upholstery by means of a spring to a back rest support, which is a four-sided tube. Preferably there are three springs formed from rubber and metal and which are arranged in an isosceles triangle. Access holes in the four sided tube facilitate the attachment of the springs.

REFERENCES:
patent: 960607 (1910-06-01), Wersel, Jr.
patent: 1064181 (1913-06-01), Taft
patent: 2649136 (1953-08-01), Eames
patent: 2796920 (1957-06-01), Cowles
patent: 3059971 (1962-10-01), Becker
patent: 3295889 (1967-01-01), Lorenz
patent: 4157203 (1979-06-01), Ambasz
patent: 4468067 (1984-08-01), Jenkins

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