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:
Oct. 12, 1993
Filed:
Nov. 22, 1991
Applicant:
Inventors:
Assignee:
Matsushita Electric Industrial Co., Ltd., Osaka, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G06F / ; A47L / ;
U.S. Cl.
CPC ...
15319 ; 395900 ;
Abstract
A vacuum cleaner comprising a fuzzy inferring device for determining a motor speed in response to the amount of dust, and means for holding the motor speed determined by the fuzzy inferring device for a predetermined period of time, whereby, after the motor speed is held for the predetermined period time, the motor is driven for a certain period of time at the speed subsequently determined by the fuzzy inferring device.