Knockdown spring unit

Details Knockdown spring unit Knockdown spring unit

1977-09-01

1978-11-07

Nunberg, Casmir A.

Spring devices

Spring panel

Spring panel comprises vertically oriented compressible coil...

5247, 267102, 267170, 267179, F16F 300

Patent

active

041242017

ABSTRACT:
A knockdown spring unit for seating furniture has lift springs connectible to a rail of a frame of the furniture and releasably attachable to a suitable platform arrangement forming a seating surface. The platform arrangement can either be fastened directly to the frame at points opposite connection of the lift springs to the frame, or the platform arrangement can be supported entirely by the lift springs for indirect attachment to the frame. Each of the lift springs has a coil portion which terminates at a one end thereof in an eye and at the other end thereof in a stem disposed extending transversely from the turns of the coil portion and forming a hook provided with a substantially V-shaped bend the vertex of which is normally disposed adjacent the eye of the spring when the spring is in an undeflected state.

REFERENCES:
patent: 2148961 (1939-02-01), Pleet
patent: 2851088 (1958-09-01), Pietruszka
patent: 3498598 (1970-03-01), Rathbun
patent: 3610607 (1971-10-01), Pofferi
patent: 4003564 (1977-01-01), Taylor

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