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:
Mar. 10, 2009
Filed:
Sep. 20, 2007
Applicants:
Hiroyuki Takahashi, Hitachinaka, JP;
Masahiro Inaniwa, Hitachinaka, JP;
Sadato Igarashi, Hitachinaka, JP;
Inventors:
Hiroyuki Takahashi, Hitachinaka, JP;
Masahiro Inaniwa, Hitachinaka, JP;
Sadato Igarashi, Hitachinaka, JP;
Assignee:
Hitachi Koki Co, Ltd., Tokyo, JP;
Primary Examiner:
Int. Cl.
CPC ...
B04B 7/06 (2006.01);
U.S. Cl.
CPC ...
Abstract
A centrifugal separator is configured such that a switching unit adapted to be brought into electrical conduction or electrical nonconduction is electrically connected in a drive power supply line between a motor drive circuit of a control unit and a motor winding wire, and that the switching unit is controlled to be brought into nonconduction when a door is opened.