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:
May. 01, 1990
Filed:
Oct. 17, 1988
Applicant:
Inventor:
Yoshinori Takashima, Omihachiman, JP;
Assignee:
Matsushita Electric Industrial Co., Ltd., Osaka, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
A47L / ;
U.S. Cl.
CPC ...
15319 ; 15339 ; 15412 ;
Abstract
An electric cleaner for use in households and/or industry, is provided with a control system for running the blower of the motor cleaner at a constant speed in spite of the speed set by a control unit when dust has not been detected by a dust sensor, and to effect an increase in the speed of the blower motor up to the speed set by the control unit when dust has been detected, whereby the electric cleaner is capable of effecting a cleaning operation quietly with its operational properties being improved.