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:
Nov. 23, 1999
Filed:
Apr. 18, 1997
Applicant:
Inventors:
Manfred Ammann, Lauterach, AT;
Anton Haele, Widnau, CH;
Assignee:
Leica Geosystems AG, Heerbrugg, CH;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01C / ; G01C / ;
U.S. Cl.
CPC ...
33290 ; 33281 ; 33285 ; 33 / ;
Abstract
A drive device for aligning a theodolite with a target, in which the theodolite is mounted rotatably in the horizontal direction on a theodolite foot. Provision is made of a control knob and an encoder connected thereto, the encoder emitting control signals in accordance with the rotary movement at the control knob to a downstream control circuit. The circuit drives a positioning motor. The rotary table is arranged at the theodolite foot and carries the control knob. Provided between the theodolite and the rotary table is an electric contact which ensures the electrical connection between the encoder and the positioning motor.