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. 29, 2001
Filed:
Sep. 29, 1999
Applicant:
Inventors:
Assignee:
STMicroelectronics S.r.l., Agrate Brianza, IT;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
A47L 9/19 ;
U.S. Cl.
CPC ...
A47L 9/19 ;
Abstract
The invention relates to a method and a device for recognizing and warning of the level of fullness of a waste container in a suction system driven by a motor and provided with an internal chamber kept under suction pressure and comprising the waste container. The method foresees a measurement of the difference of pressure between the internal chamber and the environment outside the vacuum cleaner and an elaboration of such measurement according to a set of rules in fuzzy logic for producing an electric warning signal corresponding to the filling level of the waste container.