Chair control

Details Chair control Chair control

1978-11-06

1980-07-29

Zugel, Francis K.

Supports

Resilient support

Adjustable preloading of resilient means

297302, 297304, 248597, A47C 3026

Patent

active

042147263

ABSTRACT:
The specification discloses a chair control employing an open top, generally rectangular drawn cup for housing an energy storage package. An axle secured to and extending between stretchers which are secured to a tilting chair or member thereof, is journaled in the drawn cup and carries the energy storage package. Means for adjusting the preload of the energy package and reducing the likelihood of an energy package failure are provided. First and second interlocking spindle support members are provided which form a cup reinforcing and stress distributing structure roughly box-shaped in cross section. The four outside corners of the cup are strengthened by indented sidewall portions. A strengthening flange is disposed about the periphery of the cup and the axle journaled in the cup, has a relatively large diameter for distributing stress.

REFERENCES:
patent: 623008 (1899-04-01), Greb et al.
patent: 1570436 (1926-01-01), Dawson
patent: 1986105 (1935-01-01), Foote
patent: 2818911 (1958-01-01), Syak
patent: 2845991 (1958-08-01), Soderberg
patent: 3339973 (1967-09-01), Doerner
patent: 3693495 (1972-09-01), Wagner
patent: 3740792 (1973-06-01), Werner
patent: 3863982 (1975-04-01), Sandham
patent: 4077596 (1978-03-01), Pinaire et al.

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