Supports – Resilient support – Including additional energy absorbing means – e.g. – fluid or...
Patent
1989-06-07
1991-05-21
Chin-Shue, Alvin C.
Supports
Resilient support
Including additional energy absorbing means, e.g., fluid or...
248669, 2481621, F16M 1300
Patent
active
050168541
ABSTRACT:
A spring is continuously acting on an upper part adjustable in the height by a spindle for compensating the weight of the vertical adjustable parts. An additional compensating spring acts over a piston on the upper part. By means of a screw which can be screwed in a threaded hole, the piston can be coupled with the base which is not displaceable in the height so that the effect of the additional spring is cut off. Many compensating springs can be provided which, at choice, can be rendered effective or ineffective in order to compensate for different weights.
REFERENCES:
patent: 1389657 (1921-09-01), Harsley
patent: 1880280 (1932-10-01), Replogle
patent: 2174209 (1939-09-01), Genest
patent: 2729273 (1956-01-01), Hamilton
patent: 3463579 (1969-08-01), Papritz
patent: 3912248 (1975-10-01), Pickford
patent: 4116548 (1978-09-01), Persson
Papritz Franz
Widmer Hansruedi
Chin-Shue Alvin C.
Haag-Streit AG
Olson Robert A.
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