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. 13, 2016
Filed:
Aug. 28, 2012
Tomoyoshi Yokota, Hitachinaka, JP;
Seiichi Kodato, Hitachinaka, JP;
Hiroki Kitagawa, Hitachinaka, JP;
Kenichi Matsunaga, Hitachinaka, JP;
Masahiro Miura, Hitachinaka, JP;
Yoshimi Takahashi, Hitachinaka, JP;
Tomoyoshi Yokota, Hitachinaka, JP;
Seiichi Kodato, Hitachinaka, JP;
Hiroki Kitagawa, Hitachinaka, JP;
Kenichi Matsunaga, Hitachinaka, JP;
Masahiro Miura, Hitachinaka, JP;
Yoshimi Takahashi, Hitachinaka, JP;
Hitachi Koki Co., Ltd., Tokyo, JP;
Abstract
An air compressor comprising: a tank (), a compression mechanism (), a motor () and a control circuit (). The control circuit () includes a CPU () and a storing unit () which stores a control program, the compressor operation history and a plurality of operation modes. Each of the operation modes is defined by two setting values: a reference restart pressure value and a motor rotational speed value, at least one of these values being different from among the plurality of modes. The control circuit () executes one of the plurality of modes as a target mode in which the control unit controls the motor to restart by comparing the pressure in the tank with the reference restart pressure and rotates the motor at the rotational speed of the target mode. The control circuit changes the target mode from the one of the plurality of modes to another one of the plurality of modes based on the compressor operation history.