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. 21, 2020
Filed:
Jul. 12, 2016
Applicant:
Hilti Aktiengesellschaft, Schaan, LI;
Inventors:
Egon Koenigbauer, Eichenau, DE;
Hans Appel, Munich, DE;
Assignee:
Hilti Aktiengesellschaft, Schaan, LI;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G01F 1/56 (2006.01); B23Q 11/00 (2006.01); B25D 11/00 (2006.01);
U.S. Cl.
CPC ...
G01F 1/56 (2013.01); B23Q 11/0046 (2013.01); B23Q 11/0071 (2013.01); B25D 11/00 (2013.01);
Abstract
A suction module for a hand-held power tool includes a motor-driven fan wheel, an intake channel for sucking in dust-laden air, and a collecting container for dust. A flow sensor has a sensor surface, which is formed of plastic and is arranged in the intake channel, an electric field meter facing the sensor surface for determining the electrostatic field strength on the sensor surface, and an evaluating unit for determining a flow rate of dust-laden air on the basis of the determined electrostatic field strength.