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. 04, 2017
Filed:
Jul. 20, 2010
Nicholas P. Van Brunt, White Bear Lake, MN (US);
John A. Kivisto, Oak Grove, MN (US);
Theodore W. Jagger, White Bear Lake, MN (US);
Nicholas P. Van Brunt, White Bear Lake, MN (US);
John A. Kivisto, Oak Grove, MN (US);
Theodore W. Jagger, White Bear Lake, MN (US);
Vbox, Incorporated, White Bear Lake, MN (US);
Abstract
A method of controlling a fluid pump. The pump has a plurality of oscillating pistons that travel along a central axis of a piston sleeve. A plurality of pistons is of similar mass within a piston sleeve are provided, and adjacent pistons are positioned to be 180 degrees apart in phase oscillations. An electric coil is provided for each piston, and the position of adjacent pistons is determined. The current to one of the electric coils for a piston is adjusted to maintain the 180 degree difference in phase between oscillations of adjacent pistons.