The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 21, 1991
Filed:
Jun. 07, 1989
Applicant:
Inventors:
Franz Papritz, Niederscherli, CH;
Hansruedi Widmer, Niederscherli, CH;
Assignee:
Haag-Streit AG, Liebefeld, CH;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F16M / ;
U.S. Cl.
CPC ...
248563 ; 248669 ; 2481621 ;
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.