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. 11, 1998
Filed:
Jul. 31, 1996
Karl-Josef Schalz, Weilburg, DE;
Leica Mikroskopie und Systeme GmbH, Wetzlar, DE;
Abstract
A gear unit (1) for focusing microscopes and having coarse adjustment, fine adjustment and extra-fine adjustment is described, in which, for the purpose of focusing, the object stage (5) is moved via a toothed gear (6). Coaxially arranged control knobs (7, 8) are provided on the microscope as manual control elements. The control knobs (7, 8) are connected via a drive shaft (9) and the gear unit (1) to a toothed rack (10) of the object stage. The control knob (7) for fine adjustment is provided on a rotation shaft (11) arranged so as to be capable of longitudinal displacement. Arranged on this rotation shaft (11) are at least two gear wheels (12, 13) of different diameter for fine adjustment and extra-fine adjustment. One of the gear wheels (12, 13) is connected to the gear unit (1) via the longitudinal displacement of the rotation axis (11).