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:
Jul. 14, 2015
Filed:
Feb. 22, 2013
Applicant:
Rosemount Inc., Chanhassen, MN (US);
Inventor:
Mark Stephen Schumacher, Minneapolis, MN (US);
Assignee:
Rosemount Inc., Chanhassen, MN (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01D 5/26 (2006.01);
U.S. Cl.
CPC ...
G01D 5/26 (2013.01);
Abstract
An embodiment of the present invention includes a display device including a mechanical indicator, a reference photodetector, a measurement photodetector, and an opaque shroud. The opaque shroud is connected to the mechanical indicator to variably cover the measurement photodetector based on a position of the mechanical indicator. The opaque shroud does not cover the reference photodetector.