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:
May. 21, 2019
Filed:
Jul. 10, 2014
Bryan Payne, Cornelius, NC (US);
Eugene Fina, Barrington, RI (US);
Steven K. Sullivan, Cranston, RI (US);
Keith M. Desrosiers, Foster, RI (US);
Bryan Payne, Cornelius, NC (US);
Eugene Fina, Barrington, RI (US);
Steven K. Sullivan, Cranston, RI (US);
Keith M. Desrosiers, Foster, RI (US);
Taco, Inc., Cranston, RI (US);
Abstract
This invention provides, in various embodiments, a variable frequency drive system for controlling a pump driven by a variable frequency electric motor, with the pump in fluid communication with a fluid system. The drive system of this invention improves the efficiency of the prior variable frequency drive systems by inserting into the memory of the variable frequency drive the maximum flow required for the particular flow system in which the pump is operating and adding an initial pump starting module that limits the initial starting flow rate from the pump to the desired maximum flow rate for the system, which is separately calculated.