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:
Feb. 01, 2000
Filed:
Apr. 09, 1998
Applicant:
Inventors:
Kenzo Sueki, Tondabayashi, JP;
Noboru Nishinaka, Wakayama, JP;
Assignee:
Sharp Kabushiki Kaisha, Osaka, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
A47L / ;
U.S. Cl.
CPC ...
15375 ; 15383 ; 15421 ; 15182 ;
Abstract
In order to adjust a degree of tight contact between a floor surface and a suction member of a vacuum cleaner, and to facilitate operation of the vacuum cleaner, an air flow adjusting valve is provided at a left end of an upper plate of the suction member. When a negative pressure in an inner chamber reaches to a certain valve, the air flow adjusting valve is opened and air is introduced through an air inlet. This facilitates movement of the suction member over the floor surface.