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. 30, 2023
Filed:
Aug. 31, 2021
GM Global Technology Operations Llc, Detroit, MI (US);
Ghsp, Inc., Holland, MI (US);
Gkn Sinter Metals Llc, Auburn Hills, MI (US);
Robert Benson Parrish, White Lake, MI (US);
Michael P Fannin, Brighton, MI (US);
Avinash Singh, Sterling Heights, MI (US);
Ryan David Rosinski, Whitehall, MI (US);
Alan Clifford Taylor, Lake Orion, MI (US);
Thomas John Fonville, Denver, NC (US);
GM GLOBAL TECHNOLOGY OPERATIONS LLC, Detroit, MI (US);
Abstract
Systems and methods are provided for pumps that deliver optimized torque characteristics and volumetric efficiency. A system includes a housing defining a surface and a rotor defining a face. A face clearance is defined between the face and the surface. The face clearance is variable in magnitude and determinative of target performance characteristics of the pump system. The housing is made of a material selected to have a thermal expansion characteristic and the rotor is made of a second material selected to have another thermal expansion characteristic. The thermal expansion characteristics deliver the target performance characteristics of the pump system.