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:
Aug. 27, 2019
Filed:
Dec. 09, 2014
Hilti Aktiengesellschaft, Schaan, LI;
Aaron Wiedner, Landsberg, DE;
Thomas Hofbrucker, Mammendorf, DE;
Eduard Pfeiffer, Halblech, DE;
Markus Hartmann, Mauerstetten, DE;
Hilti Aktiengesellschaft, Schaan, LI;
Abstract
The handheld power tool has a tool receptacle for accommodating a tool on a working axis () and an electric motor (). A pneumatic percussion mechanism () has an exciter, which is moved back-and-forth by the motor () periodically in parallel to the working axis (), a striker (), which is movable on the working axis () and is coupled via a pneumatic spring () to the exciter, and an anvil (), which is situated movably on the working axis () and is situated downstream from the striker () in the percussion direction (). The anvil () has a cylindrical anvil section () having a diameter and multiple channels () extending over the entire length () of the anvil section (). A cross-sectional area of the anvil section () is at most 5% less than a circular area defined by the diameter.