Patent · US Expired

Brake system with two independent mechanical brakes

US5480009A · kind A · utility

90Cited by

6References

11Claims

0Family size

Assignee

Andreas Stihl AG & Co. KG · DE

Inventors

Dieter Wieland · Neckarrems, DE
Herbert Armbruster · Waiblingen, DE
Gerhard Meyer · Lehrberg, DE

Key dates

Filing date	Sep 9, 1994
Grant date	Jan 2, 1996
Priority date	—
Expiry date	Sep 9, 2014

Classification

Technology area (CPC H)Electricity
CPC primaryH02K7/102
WIPO fieldElectrical machinery, apparatus, energy
WIPO sectorElectrical engineering

Abstract

The device for braking an electric drive motor of a hand-held working tool has a safety brake for an immediate stopping of the working tool and an independent mechanical brake for coasting the working tool to a stop after switching off the drive motor. The mechanical brake acts on a rotational part connected to the drive motor and is activated when a switch element for activating the drive motor is released.

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