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:
Jul. 14, 2020
Filed:
Dec. 06, 2017
Applicant:
Caterpillar Inc., Peoria, IL (US);
Inventors:
Bryan Edward Nelson, Chillicothe, IL (US);
Sana Mahmood, Albuquerque, NM (US);
Stephen R Lewis, Chillicothe, IL (US);
Assignee:
Caterpillar Inc., Peoria, IL (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F02M 63/00 (2006.01); F02M 59/46 (2006.01); F02M 51/06 (2006.01); F04B 1/0452 (2020.01); F04B 7/00 (2006.01); F02M 59/36 (2006.01); F02M 47/02 (2006.01);
U.S. Cl.
CPC ...
F02M 63/0075 (2013.01); F02M 51/0628 (2013.01); F02M 51/0635 (2013.01); F02M 51/0642 (2013.01); F02M 59/366 (2013.01); F02M 59/466 (2013.01); F04B 1/0452 (2013.01); F04B 7/0076 (2013.01); F02M 47/027 (2013.01); F02M 59/368 (2013.01); F02M 2200/07 (2013.01);
Abstract
A valve assembly for a pump includes an electrical actuator having a stator and an armature, where the armature includes a top armature surface facing the stator and having an inwardly stepped-up profile that forms a raised surface at a radially inward location, and a lower, gap-forming surface at a radially outward location that forms a gap between the armature and the stator when the electrical actuator is activated to facilitate displacing fluid and avoiding production of high velocity, potentially damaging fluid flows.