Patent · US Active

Fastener driving tool having energy transfer members

US8132702B2 · kind B2 · utility

16Cited by

11References

15Claims

0Family size

Assignee

BLACK & DECKER INC. · US

Inventors

Michael Kunz · Steinheim an der Murr, DE
Stefan Gensmann · Adenau, DE
Markus Rompel · Runkel, DE

Key dates

Filing date	May 29, 2009
Grant date	Mar 13, 2012
Priority date	—
Expiry date	Nov 25, 2029

Classification

Technology area (CPC B)Performing Operations; Transporting
CPC primaryB25C1/06
WIPO fieldMachine tools
WIPO sectorMechanical engineering

Abstract

A fastener driving tool arranged to drive fasteners into a workpiece includes at least one electric motor having a central stator and an external rotor arranged to rotate around the stator. The rotor may be in the form of a flywheel. The tool includes an energy transfer member such as a driver arranged to transfer kinetic energy from the rotor to a fastener held in the tool, thereby to drive the fastener from the tool into a workpiece. The electric motor may be a brushless motor. The tool may include two such motors, arranged such that both of their rotors propel the driver simultaneously.

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