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. 28, 2013
Filed:
Oct. 13, 2009
Applicants:
Alfred Affa, Stein a.d. Traun, DE;
Johannes Haunreiter, Burghausen, DE;
Inventors:
Alfred Affa, Stein a.d. Traun, DE;
Johannes Haunreiter, Burghausen, DE;
Assignee:
Dr. Johannes Heidenhain GmbH, Traunreut, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01D 5/347 (2006.01);
U.S. Cl.
CPC ...
Abstract
A length measuring device for measuring a relative position of two objects, the length measuring device including a scale in a housing and a scanning unit displaceable in a measuring direction X relative to the scale and the housing, wherein the scanning unit is disposed inside the housing and including a heat-generating electrical component. The length measuring device further including a thermal conduction path designed for transferring heat generated at the heat-generating electrical component to the housing.