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:
Nov. 07, 2017
Filed:
Nov. 14, 2014
Hilti Aktiengesellschaft, Schaan, LI;
Benedikt Beckert, Augsburg, DE;
Thomas Mueller, Klosterlechfeld, DE;
Hilti Aktiengesellschaft, Schaan, LI;
Abstract
An electric tool is disclosed. The tool includes an electric motor, a battery, a monitoring device for monitoring a monitoring operation-value limit, where the monitoring operation-value limit lies above an operation-value limit of the battery, an adjustable resistor component, and an operation-value controller for setting at least one operation-value of the electric motor by a pulse width modulation (PWM) duty cycle. The PWM duty cycle is a first value that is derivable from a current setting of the adjustable resistor component or a second value that corresponds to a PWM duty cycle last used for setting the at least one operation-value plus an offset value. A lower of the first value or the second value is selected for the PWM duty cycle, if an operation-value of the battery lies above the monitoring operation-value limit.