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:
Apr. 14, 1998
Filed:
May. 22, 1996
Yoshitaka Niinai, Hitachinaka, JP;
Shoji Kusumoto, Hitachinaka, JP;
Tsutomu Takamura, Hitachinaka, JP;
Noriyasu Matsufuji, Hitachinaka, JP;
Hitachi Koki Co., Ltd., , JP;
Abstract
A centrifugal separator comprising: a rotor for containing a sample; a rotating unit; a detection circuit for detecting a distance between a reference position and a position of the rotor and generating a distance detection signal; a rectifying circuit for half-wave rectifying the distance detection signal; a judging circuit for judging the distance detection signal from the rectifying circuit; and a controller for controlling the rotating unit in accordance with a judging result of the judging circuit and a corresponding method are disclosed. The judging circuit judges whether the distance is in a balanced condition of or an unbalance condition of the rotor. A centrifugal separator comprising: the rotor; the rotating unit; a detection circuit, having a given detection range, for detecting a distance between a reference position and a position of the rotor and generating the distance detection signal, the given range covering a deflection range of the rotor due to whirling on the side of the detection circuit with respect to a rotational axis of the rotor; the judging circuit for judging the detection signal and the controller for controlling the rotating unit and a corresponding method are also disclosed. The detection range may be assigned to an inhibit deflection range due to whirling of the rotor.