Patent · US Active

Hand-held power tool

US11123853B2 · kind B2 · utility

0Cited by

7References

22Claims

0Family size

Assignee

Hilti Aktiengesellschaft · LI

Inventors

Stefan Hammerstingl · Munich, DE
Eduard Pfeiffer · Halblech, DE
Matthias Doberenz · Untermeitingen, DE
Pierre Pallmer · Igling, DE

Key dates

Filing date	Jul 31, 2017
Grant date	Sep 21, 2021
Priority date	—
Expiry date	Sep 21, 2037

Classification

Technology area (CPC B)Performing Operations; Transporting
CPC primaryB25D2250/035
WIPO fieldMachine tools
WIPO sectorMechanical engineering

Abstract

The A hand-held power tool includes a tool holder 2 for holding a tool and a pneumatic striking mechanism for periodically generating impacts on the tool held in the tool holder. The striking mechanism includes a guiding tube, an exciter piston, a striker, a pneumatic chamber closed by the exciter piston and the striker in the guiding tube, and a compensating opening in the guiding tube for ventilating the pneumatic chamber. A cap covers the compensating opening on an outside of the guiding tube. The cap is open in an opening direction which is largely tangential to the guiding tube.

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