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:
Dec. 03, 2019
Filed:
Dec. 01, 2015
Hilti Aktiengesellschaft, Schaan, LI;
Hilti Aktiengesellschaft, Schaan, LI;
Abstract
The hand-held power tool has a tool holder () for holding a tool () along a working axis (). A hammer mechanism () has a striker () that is moved periodically along the working axis at an impact rate. A drive control () of the hammer mechanism () sets the impact rate to a set point value. A vibration absorber () has an oscillator () that moves along the working axis () about a resting position and one or multiple springs () that drive the oscillator () back into the resting position. A calibration phase comprises the following steps: detection of an acceleration using the acceleration sensor (); determination of a minimum of the acceleration by varying the impact rate in a range of between 90% and 110% of the set point value; and adjusting the set point to the impact rate associated with the ascertained minimum.