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:
Aug. 22, 1995
Filed:
Feb. 01, 1994
Raimund Volk, Tuningen, DE;
Hommelwerke GmbH, Hanover, DE;
Abstract
A switching apparatus with an adjusting drive, preferably piezoelectrical, which is connected with a device producing a supply voltage. A second adjusting drive, which is preferably constructed in the same manner as the first adjusting drive, and to which a length measuring device is coupled, which scans the adjusting movement of the adjusting element of the second adjusting drive and produces an output signal, which is connected in a linear manner with the adjusting movement of the adjusting element of the first adjusting drive, is connected with the outlet of the supply voltage producing device. By means of this linear connection, errors which are brought about by hysteresis, drift or temperature in the adjusting drive, which is preferably piezoelectrical, are eliminated.