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:
Sep. 23, 2025
Filed:
Aug. 16, 2021
Hitachi Industrial Equipment Systems Co., Ltd., Tokyo, JP;
Yuuji Itou, Tokyo, JP;
Toshiaki Yabe, Tokyo, JP;
Kohei Sakai, Tokyo, JP;
Takashi Nakajima, Tokyo, JP;
HITACHI INDUSTRIAL EQUIPMENT SYSTEMS CO., LTD., Tokyo, JP;
Abstract
Provided is an air compressor that suppresses a rise in delivery temperature due to a change in atmospheric pressure, and consequently improves the life of parts. The air compressorincludes a motor, a compressor main bodydriven by the motorto compress air, a delivery pressure sensorthat senses a delivery pressure of the compressor main body, an atmospheric pressure sensorthat senses an atmospheric pressure, and a controller. The controllercompares the delivery pressure sensed by the delivery pressure sensorwith a set pressure, and performs operation control based on a result of the comparison. The controllercorrects the set pressure such that a ratio between the atmospheric pressure sensed by the atmospheric pressure sensorand the set pressure becomes a set value set in advance.