Patent · US Active

Pneumatic chipping hammer

US11992927B2 · kind B2 · utility

0Cited by

5References

14Claims

0Family size

Assignee

Wacker Chemie AG · DE

Inventors

Peter Grübl · Eichendorf, DE
Martin Brixel · Stilln, DE

Key dates

Filing date	Oct 8, 2018
Grant date	May 28, 2024
Priority date	—
Expiry date	Jan 22, 2040

Classification

Technology area (CPC B)Performing Operations; Transporting
CPC primaryB25D2250/371
WIPO fieldMachine tools
WIPO sectorMechanical engineering

Abstract

A pneumatic chisel includes a housing having a double-acting pneumatic cylinder in which a piston including a chisel is movably arranged along a longitudinal axis. The cylinder has a work-side section and a return-side section. The return-side section includes a damping portion and a pressure-equalization opening. The work-side section includes an end-position damping member and a compressed air connection. A compressed air reservoir is connected to the return-side section of the cylinder. A chisel guide housing includes a sealing air chamber. The piston is constructed as one piece with the chisel.

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