Patent · US Active

Hand tool device

US9855648B2 · kind B2 · utility

0Cited by

6References

14Claims

0Family size

Assignee

Robert Bosch GmbH · DE

Inventors

Tobias Herr · Stuttgart, DE
Heiko Roehm · Stuttgart, DE
Marco Braun · Bukit Mertajam, MY

Key dates

Filing date	May 8, 2014
Grant date	Jan 2, 2018
Priority date	—
Expiry date	Mar 27, 2036

Classification

Technology area (CPC B)Performing Operations; Transporting
CPC primaryB25D2217/0015
WIPO fieldMachine tools
WIPO sectorMechanical engineering

Abstract

A hand tool device has a hammer mechanism including a hammer, at least one curve guide which drives the hammer at least during the hammer drilling operation, and at least one hammer mechanism spring which (i) stores at least a part of an impact energy in at least one operating state, and (ii) holds the hammer in the peripheral direction in at least one operating state.

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