Patent · US Expired

Percussion hammer with a one piece striker

US4310055A · kind A · utility

19Cited by

2References

20Claims

0Family size

Assignee

Robert Bosch GmbH · DE

Inventors

Karl Wanner · Echterdingen, DE
Ludwig Thome · Echterdingen, DE
Joerg Faelche · Bempflingen, DE
Werner Lehmann · Leinfelden, DE

Key dates

Filing date	Aug 16, 1979
Grant date	Jan 12, 1982
Priority date	—
Expiry date	Aug 16, 1999

Classification

Technology area (CPC B)Performing Operations; Transporting
CPC primaryB25D2250/131
WIPO fieldMachine tools
WIPO sectorMechanical engineering

Abstract

A hand-held power tool has a tool holder, a tool axially reciprocable in the tool holder, and a striking mechanism including a drive piston and a striker having a disc-shaped plate with a small axial dimension and a striker shaft having a cross sectional dimension corresponding to that of a tool shaft. The striker shaft transmits impact energy directly to a rear end face of the tool shaft without an intermediate member.

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