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:
Oct. 04, 2022
Filed:
Nov. 15, 2018
Parker-hannifin Corporation, Cleveland, OH (US);
Yu-Sen J. Chu, Westlake, OH (US);
Parker-Hannifin Corporation, Cleveland, OH (US);
Abstract
A pump and motor assembly () includes a centrifugal pump (), a bent axis hydraulic pump, and a wet-type drive motor (). The motor has a rotor and a stator that are submerged in hydraulic fluid for full lubrication and cooling. A drive shaftis driven by the motor. The centrifugal pump has a rotatable impeller () for pumping hydraulic fluid from an inlet () to the bent axis hydraulic pump. The centrifugal pump also pumps fluid to the motor for lubrication and cooling. The bent axis hydraulic pump pumps the fluid and discharges the fluid from the system. The centrifugal pump and the bent axis hydraulic pump are rotatable along a common rotational axis Rthat is angled relative to the rotational axis Rof the drive shaft.