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:
Jan. 16, 2018
Filed:
Jan. 11, 2017
Applicant:
Fresenius Medical Care Deutschland Gmbh, Bad Homburg, DE;
Inventors:
Assignee:
Fresenius Medical Care Deutschland GmbH, Bad Homburg, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H05B 1/02 (2006.01); A61M 1/28 (2006.01); A61M 5/44 (2006.01); A61M 1/16 (2006.01);
U.S. Cl.
CPC ...
A61M 1/28 (2013.01); A61M 1/166 (2014.02); A61M 1/1664 (2014.02); A61M 1/282 (2014.02); A61M 5/44 (2013.01); A61M 2205/12 (2013.01); A61M 2205/3653 (2013.01);
Abstract
A medical device having a heater with at least one heating element which has mains voltage applied to it by a heating control unit. The heating control unit includes a monitoring arrangement and a switching arrangement. The monitoring arrangement can recognize the zero crossings of the mains voltage, and the switching arrangement can switch the at least one heating element on or off in the zero crossing. The heating control unit controls the power of the heating by switching on and off of one or more half cycles of the mains AC voltage.