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:
Feb. 25, 2014
Filed:
Jul. 26, 2011
Scott A. Sarkinen, Greenfield, MN (US);
James M. Haase, Maplewood, MN (US);
Ronald L. Mezera, Lake Elmo, MN (US);
Christian Michel Peclat, Neuchatel, CH;
Scott A. Sarkinen, Greenfield, MN (US);
James M. Haase, Maplewood, MN (US);
Ronald L. Mezera, Lake Elmo, MN (US);
Christian Michel Peclat, Neuchatel, CH;
Medtronic, Inc., Minneapolis, MN (US);
Abstract
Detection of end of stroke for an electromagnetic pump may be performed using, for example, a calculated first flux derivative. Further, inductance of a coil that can be energized to produce a pump stroke may be calculated (e.g., the pump may include an actuator moveable in response to the energization of the coil). For example, the inductance may be calculated as a function of sense coil current and source electrical potential when the actuator is not moving for use in determining position of the actuator.