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:
Dec. 23, 2025
Filed:
Feb. 01, 2024
Hamilton Sundstrand Corporation, Charlotte, NC (US);
Craig M. Beers, Wethersfield, CT (US);
Brent J. Merritt, Southwick, MA (US);
Hamilton Sundstrand Corporation, Charlotte, NC (US);
Abstract
A compressor includes a compressor rotor and a motor disposed about a common axis. The motor includes a rotor shaft coupled to the compressor rotor and configured to drive the compressor rotor; a thrust shaft disposed at an opposite end of the motor from the rotor shaft; a tie rod disposed on the common axis and extending through the rotor shaft, thrust shaft, and the compressor rotor, the tie rod axially retaining the compressor rotor at a forward end and the motor at an aft end; a cooling fluid inlet disposed at an aft end of the motor; and a motor rotor cooling flow path extending from the thrust shaft to the rotor shaft. The rotor shaft includes a plurality of orifices that open to a cavity on a backside of the compressor rotor and fluidly couple the motor rotor cooling flow path to the cavity.