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:
Mar. 23, 2021
Filed:
Dec. 12, 2014
Applicant:
Dh Technologies Development Pte. Ltd., Singapore, SG;
Inventors:
Phillip H. Paul, San Francisco, CA (US);
Kenneth R. Hencken, Pleasanton, CA (US);
Assignee:
DH TECHNOLOGIES DEVELOPMENT PTE. LTD., Singapore, SG;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F04B 51/00 (2006.01); F04B 25/00 (2006.01); F04B 19/00 (2006.01); F04B 9/125 (2006.01); F04B 9/12 (2006.01); F04B 9/08 (2006.01);
U.S. Cl.
CPC ...
F04B 19/006 (2013.01); F04B 9/12 (2013.01); F04B 9/125 (2013.01); F04B 9/08 (2013.01);
Abstract
In a linear displacement pump, liquid is discharged by driving a piston along at least part of a stroke length. While discharging the liquid, a linear position of the piston is sensed at a plurality of positions along the stroke length, and a plurality of output signals is produced. Based on one or more of the output signals, an operational state of the pump is determined.