Patent · US Active

Electropneumatic impact mechanism

US12151351B2 · kind B2 · utility

0Cited by

1References

19Claims

0Family size

Assignee

Hilti Aktiengesellschaft · LI

Inventors

Ernst-Rudolf Lübkert · Landsberg, DE
Uto Plank · Freising, DE
Karin GROTH · Landsberg, DE

Key dates

Filing date	Jun 15, 2021
Grant date	Nov 26, 2024
Priority date	—
Expiry date	Aug 24, 2041

Classification

Technology area (CPC B)Performing Operations; Transporting
CPC primaryB25D2250/331
WIPO fieldMachine tools
WIPO sectorMechanical engineering

Abstract

An electropneumatic impact mechanism for an electric hand-held power tool, in particular a hammer drill and/or chipping hammer, wherein the impact mechanism has a transmission housing, a guide tube arranged at least partially in the transmission housing, an exciter piston that is movable in the axial direction in the guide tube, a connecting rod coupled to the exciter piston, and an eccentric wheel which is coupled to the connecting rod on one side and is mounted so as to be rotatable with respect to the transmission housing on the other side, wherein the impact mechanism has a bearing body on which the eccentric wheel is mounted rotatably by means of a pair of plain bearings.

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