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. 04, 1999
Filed:
Aug. 29, 1997
Rolf Reimann, Forchheim, DE;
Thomas Schmitt, Forchheim, DE;
Siemens Aktiengesellschaft, Munich, DE;
Abstract
Counterbalance device (1), in particular for a medical X-ray device, with a drum (2) which is at least partly encapsulated in a housing (12) and is mounted so that it can rotate in the housing on a stationary shaft (11). The drum has an integrated first spring element (7) which applies a bias to the drum, and a first cable (5) which supports a weight (40). The cable is guided in a groove (3) on the drum and can be wound or unwound around the drum. An independent second spring element (8) is connected within the drum in parallel to the first spring element. A second cable is guided in an additional groove (4) on the drum and is connected to the weight. As a result, there is a separate safety device for each spring element and each cable, to prevent the uncontrolled descent of the weight in the event that the spring element and/or the coil breaks or fails.