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:
Apr. 23, 2013
Filed:
Apr. 20, 2010
Derrick Thanh Tran, Yorba Linda, CA (US);
Thang Quoc Dang, Huntington Beach, CA (US);
Rufino Naval, Jr., San Juan Capistrano, CA (US);
David L. Phillips, Santa Ana, CA (US);
Jignesh N. Pandya, Vadodara, IN;
Ujjaval D. Joshi, Gujarat, IN;
Derrick Thanh Tran, Yorba Linda, CA (US);
Thang Quoc Dang, Huntington Beach, CA (US);
Rufino Naval, Jr., San Juan Capistrano, CA (US);
David L. Phillips, Santa Ana, CA (US);
Jignesh N. Pandya, Vadodara, IN;
Ujjaval D. Joshi, Gujarat, IN;
Xylem IP Holdings LLC., White Plains, NY (US);
Abstract
The present invention provides a technique using current sensing to control the pressure at constant level without the direct sensing of the pressure. This technique will help to reduce dependency solely on switch or sensor and their non linearity and other associated problems such as the non-repetitive behavior, being affected by EMI etc. The technique includes using a pump controller featuring one or more modules configured to respond to one or more input signals containing information about current provided from a pump; and configured to provide one or more output signals containing information to control the pump to operate at a substantially constant pressure without the direct sensing of pump pressure. The one or more modules control the operation of the pump based at least partly on a table of characteristics related to voltage and current that is calibrated for each pump.