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:
Jan. 17, 1995
Filed:
Nov. 04, 1993
Fumio Jyoraku, Hitachi, JP;
Hisao Suka, Hitachi, JP;
Yoshitaro Ishii, Hitachi, JP;
Hisanori Toyoshima, Hitachi, JP;
Mitsuhisa Kawamata, Hitachi, JP;
Haruo Koharagi, Juuou, JP;
Kazuo Tahara, Hitachi, JP;
Tunehiro Endo, Hitachiohta, JP;
Kunio Miyashita, Hitachi, JP;
Toshiyuki Ajima, Hitachi, JP;
Takeshi Abe, Hitachi, JP;
Atusi Hosokawa, Hitachi, JP;
Hitachi, Ltd., Tokyo, JP;
Abstract
A controlling apparatus controls a suction performance of a blower motor which is installed into a cleaner main body. The controlling apparatus increases the suction performance when a suction nozzle is operated and decreases the suction performance when the suction nozzle is stopped. Corresponding to a floor use suction nozzle and a crevice use suction nozzle, at a predetermined air flow amount range, the most suitable operation control being suited to a discriminated suction nozzle can carried out automatically. Plural kinds of the suction nozzles at an actual use scope are set beforehand. When the suction nozzle is exchanged the flow amount range is changed over and selected with a respective suction nozzle. Plural kinds of the suction nozzles are selected and changed over automatically according to the dimension of a change amount of an operation condition. A brushless direct motor is used as the blower motor and has a domain being operated at a chopper control duty of factor 100%.