Patent · US Active

Portable power tool

US10286537B2 · kind B2 · utility

1Cited by

1References

6Claims

0Family size

Assignee

Hilti Aktiengesellschaft · LI

Inventors

Olaf Koch · Kirchdorf an der Krems, AT
Theo Kiesel · Pullach, DE
Helene Kaps · Munich, DE
Matthias Keith · Kaufbeuren, DE

Key dates

Filing date	Oct 30, 2014
Grant date	May 14, 2019
Priority date	—
Expiry date	Dec 9, 2035

Classification

Technology area (CPC B)Performing Operations; Transporting
CPC primaryB25D2250/391
WIPO fieldMachine tools
WIPO sectorMechanical engineering

Abstract

A portable power tool is disclosed. The tool has a tool holder in which a tool can be moveably inserted on a working axis in a striking direction. A percussion mechanism has a striker coupled via a pneumatic chamber to an exciter moved periodically along the working axis and an intermediate striker arranged in the striking direction downstream from striker. The intermediate striker is guided in a slide bearing with a tolerance coaxially to the working axis. The intermediate striker has a ring-shaped bead. A hollow-cylindrical backstop is arranged in the striking direction upstream from the bead. The backstop is moveably guided on a sliding surface with radial play along working axis. The radial play is at least three times as large as a tolerance of the guide of the intermediate striker in the slide bearing.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.