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. 14, 2019
Filed:
Nov. 17, 2015
Carrier Corporation, Jupiter, FL (US);
Masao Akei, Cicero, NY (US);
Yifan Qiu, Manlius, NY (US);
Carrier Corporation, Palm Beach Gardens, FL (US);
Abstract
In a screw compressor (), a male rotor suction end bearing () and discharge end bearing () mount the male rotor suction end shaft portion () and discharge end shaft portion (). A female rotor suction end bearing () and discharge end bearing () mount the female rotor suction end shaft portion () and discharge end shaft portion (). At least one valve (------) is along a lubricant flowpath and has an energized condition and a de-energized condition. At least one restriction (-----------) is along the lubricant flowpath. The at least one valve and the at least one restriction are positioned to create a lubricant pressure difference biasing the rotors away from a discharge end of the case.