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. 14, 2026
Filed:
May. 05, 2022
Applicant:
Hilti Aktiengesellschaft, Schaan, LI;
Inventors:
Assignee:
Hilti Aktiengesellschaft, Schaan, LI;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H02P 3/10 (2006.01); B25F 5/00 (2006.01);
U.S. Cl.
CPC ...
H02P 3/10 (2013.01); B25F 5/00 (2013.01);
Abstract
Control method for braking an electric motor () of an electric handheld power tool (), the electric motor () including a stator winding () and a rotor winding (), wherein the method includes a) switching (S) the electric motor () from motor operation to braking operation, b) reversing the polarity (S) of an input voltage applied to the rotor winding () compared to motor operation, c) limiting (S) a rotor current (I(t)) of the rotor winding () as a function of a predetermined threshold value (I), and d) regulating (S) a stator current (I(t)) of the stator winding () as a function of a current rotation speed (n(t)) of the electric motor ().