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. 07, 1985
Filed:
Mar. 09, 1983
Applicant:
Inventor:
Gerhard Kurz, 7261 Althengstett, DE;
Assignee:
Other;
Primary Examiner:
Int. Cl.
CPC ...
A47L / ;
U.S. Cl.
CPC ...
15319 ; 15339 ;
Abstract
A device for automatically controlling the suction power of a vacuum cleaner, in which at least one diaphragm-actuated vacuum switch is so arranged in the vacuum region of the vacuum cleaner that, depending on the variation in the air pressure as a result of external operating conditions, a contacting is produced which leads to a switching of the speed control range of the vacuum cleaner motor. The switching of the instantaneous suction power takes place in steps, two diaphragm switches having three contacts each being preferably provided.