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:
Jul. 03, 1990
Filed:
Jan. 30, 1989
Applicant:
Inventor:
Gerhard Kurz, Stuttgart, DE;
Assignee:
Interlava AG, Lugano, CH;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
A47L / ;
U.S. Cl.
CPC ...
15339 ; 55274 ;
Abstract
In connection with a mounting device for sensors and pick-ups generally, serving as dust-detecting means for vacuum cleaners, in particular in the form of luminous diodes and phototransistors arranged adjacent the suction channel of the said vacuum cleaner, it is proposed to form at least one axial channel, leading from the inside to the outside, immediately adjacent the sensor, through which an air flow is passed due to underpressures or overpressures prevailing in the area of the sensor, which air flow acts to continuously clean the sensitive area of the sensor.