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:
Mar. 25, 2003
Filed:
Jun. 27, 2002
Andrzej Metelski, Romanshorn, CH;
Leica Microsystems AG, Heerbrugg, CH;
Abstract
The invention concerns a stand comprising an automatic balancing device in which an electric motor ( ), an effective lever arm (h) is (automatically) modified by displacement of a counterweight (AG), independently of any static sensing of an imbalance. During the displacement of the counterweight (AG) (modification of effective lever arm h), the equilibrium state (balance state) is sensed dynamically by a measurement sensor ( ) of a sensor ( ), and is corrected in accordance with diagrams (software programs in a microprocessor ( ) that activates the electric motor ( )). In this context, provision can be made for fast and slow operating modes for the electric motor ( ), threshold values in the measurement signal, stops, and limit switches.