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:
Feb. 23, 1988
Filed:
Jan. 10, 1986
Yozo Nakamura, Ibaraki, JP;
Naoyuki Tanaka, Abiko, JP;
Shigeru Machida, Ibaraki, JP;
Akira Arai, Ibaraki, JP;
Yoshihisa Uneyama, Tochigi, JP;
Kazuo Ikeda, Tochigi, JP;
Akihiko Ishiyama, Tochigi, JP;
Takeoshi Katoh, Ibaraki, JP;
Tunehiro Endo, Hitachiota, JP;
Hiroaki Hata, Tochigi, JP;
Hitachi, Ltd., Tokyo, JP;
Abstract
A motor-driven compressor used as a compressor or high-pressure gas generator for a refrigerating cycle, in which the output torque of the electric motor for driving the compressor is controlled so as to make the output torque agree with the load torque required for performing compression in any revolutional angular position of the driving main shaft to thereby reduce revolutional torsional vibrations caused by disagreement between the load torque and the output torque.