Patent · US Active

Hand-held power tool, in particular a rotary hammer and/or chisel hammer

US8613328B2 · kind B2 · utility

9Cited by

11References

14Claims

0Family size

Assignee

Robert Bosch GmbH · DE

Inventors

Gerhard Meixner · Echterdingen, DE
Ralph Dammertz · Rantoul, US
Juergen Lennartz · Esslingen am Neckar, DE

Key dates

Filing date	Oct 27, 2006
Grant date	Dec 24, 2013
Priority date	—
Expiry date	Jan 18, 2030

Classification

Technology area (CPC B)Performing Operations; Transporting
CPC primaryB25D2250/365
WIPO fieldMachine tools
WIPO sectorMechanical engineering

Abstract

The invention relates to a hand power tool, in particular a drill hammer and/or chipping hammer, comprising a hammer unit (10a; 10b) for producing a pulse in the direction of a hammer axis (12a; 12b). Said tool has an axial drive unit (14a; 14b) with a drive element (16a; 16b) and a motor unit (18a; 18b), in addition to a motor shaft (20a; 20b), which forms an angle (22a; 22b) not equal to zero with the hammer axis (12a; 12b) and which co-operates with the axial drive unit (14a; 14b) by means of a torque transmission wheel (24a; 24b) of said unit, the axial drive unit (14a; 14b) being mounted on the opposite side of the torque transmission wheel (24a; 24b) from the motor unit (18a; 18b). The driven element (16a; 16b) of the axial drive unit (14a; 14b) is mounted directly on the torque transmission wheel (24a; 24b).

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