Patent · US Active

Hand-held machine tool

US11117250B2 · kind B2 · utility

0Cited by

5References

11Claims

0Family size

Assignee

Hilti Aktiengesellschaft · LI

Inventors

Pierre Pallmer · Igling, DE
Steffen Geiger · Asperg, DE
Ferdinand Kristen · Germering, DE
Franz Popp · Großburgwedel, DE
Erich Daigeler · Buchloe, DE
Henrik Luessmann · Landsberg, DE

Key dates

Filing date	Jun 20, 2017
Grant date	Sep 14, 2021
Priority date	—
Expiry date	Jul 23, 2037

Classification

Technology area (CPC B)Performing Operations; Transporting
CPC primaryB25D2250/365
WIPO fieldMachine tools
WIPO sectorMechanical engineering

Abstract

A machine tool includes a tool holder and a pneumatic striking mechanism that includes, on a working axis, an exciter piston, a beater, and a pneumatic chamber disposed between the exciter piston and the beater. The exciter piston is drivable by the motor and includes a pot-shaped base body, a seal ring, and a tube-shaped cladding body. The pot-shaped base body has a lateral wall enclosing the working axis and a collar which protrudes in a radial direction. The tube-shaped cladding body is disposed on the pot-shaped base body surrounding the lateral wall. A groove is defined between the collar and the tube-shaped cladding body and the seal ring is disposed in the groove.

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