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. 15, 2013
Filed:
Feb. 12, 2010
Tim P. Hogan, Bristol, WI (US);
James R. Cleveland, Wheaton, IL (US);
John Hsing, Chicago, IL (US);
Jerry Visak, Vancouver, WA (US);
Stephen Burns, Portland, OR (US);
Charles F. Carr, Battle Ground, WA (US);
Tim P. Hogan, Bristol, WI (US);
James R. Cleveland, Wheaton, IL (US);
John Hsing, Chicago, IL (US);
Jerry Visak, Vancouver, WA (US);
Stephen Burns, Portland, OR (US);
Charles F. Carr, Battle Ground, WA (US);
Fluid Management Operations LCC, Wheeling, IL (US);
Abstract
A pair of dual chamber mixing pumps are combined which allow for a constant dispense rate profile using motor speed modulation. Each pump is divided into two chambers, the proximal chamber and the distal chamber. The chambers are defined in part by a piston having proximal and distal ends and recessed sections. The pump utilizes one common driving mechanism to axially rotate and laterally reciprocate the piston to provide continuous pumping of fluids with reduced pulsations. Each fluid enters through its own pump inlet and outlet. The pumps are operated 90° out of phase with respect to each other.