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:
Sep. 25, 2018
Filed:
Mar. 30, 2015
Applicant:
Rosemount, Inc., Shakopee, MN (US);
Inventors:
Clarence Edward Holmstadt, Chaska, MN (US);
Robert Ernest LaRoche, Shakopee, MN (US);
Steven J. McCoy, Eden Prairie, MN (US);
Assignee:
ROSEMOUNT INC., Shakopee, MN (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G05B 9/02 (2006.01); G05B 19/414 (2006.01); G05B 19/042 (2006.01);
U.S. Cl.
CPC ...
G05B 19/414 (2013.01); G05B 19/042 (2013.01); G05B 2219/25428 (2013.01); G05B 2219/31121 (2013.01); G05B 2219/41411 (2013.01);
Abstract
A process transmitter includes device circuitry that generates values that are to be conveyed on a current loop. A series control transistor is in series between the current loop and the device circuitry and a saturation prevention circuit prevents the series control transistor from entering saturation.