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:
Sep. 10, 2019
Filed:
Feb. 15, 2016
Applicant:
Federal Signal Corporation, Oak Brook, IL (US);
Inventor:
Xiaolun Huang, Naperville, IL (US);
Assignee:
Federal Signal Corporation, Oak Brook, IL (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F04B 1/06 (2006.01); F04B 9/113 (2006.01); F04B 49/06 (2006.01); F04B 49/12 (2006.01);
U.S. Cl.
CPC ...
F04B 1/06 (2013.01); F04B 9/113 (2013.01); F04B 49/06 (2013.01); F04B 49/12 (2013.01); F04B 2201/0201 (2013.01);
Abstract
A piston shifting control system is provided to control a displacement pump to maximize a stroke length of a piston and prevent damages to the entire pump system. The displacement pump may include a linear variable displacement transducer (LVDT) inserted through one end of a cylinder body and used to detect a position of the piston within the cylinder. The shifting control system is configured to monitor a position of the piston assembly in the displacement pump and adjust a shifting trigger point of the piston assembly in each stroke to maximize the stroke length.