Patent · US Expired

Electric tool with source of power independent of the line

US4779687A · kind A · utility

83Cited by

4References

11Claims

0Family size

Assignee

C. & E. FEIN GMBH · DE

Inventors

Wolfgang Schreiber · Stuttgart, DE
Manfred Fink · Weinsberg, DE
Ewald Hald · Echterdingen, DE
Martin Schultheiss · Schwäbisch Gmünd, DE
Manfred Ludwig · Stuttgart, DE
Heinrich Henssler · Schwäbisch Gmünd, DE

Key dates

Filing date	Jan 30, 1987
Grant date	Oct 25, 1988
Priority date	—
Expiry date	Jan 30, 2007

Classification

Technology area (CPC B)Performing Operations; Transporting
CPC primaryB25F5/029
WIPO fieldMachine tools
WIPO sectorMechanical engineering

Abstract

An electric tool with a source of power that is independent of the line and with a transmission housing or motor housing that is also designed to function as a grip, with another grip merging into one side of it. To position the center of gravity such that the tool will be easier to handle and to allow the operator to continue working when one battery pack goes dead, attachments for battery packs are provided at the end of each grip.

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