Patent · US Active

Use block for a handheld work apparatus

US8836471B2 · kind B2 · utility

0Cited by

1References

11Claims

0Family size

Assignee

Andreas Stihl AG & Co. KG · DE

Inventors

Andreas Neubauer · Ludwigsburg, DE
Robert Böker · Winnenden, DE

Key dates

Filing date	Dec 5, 2011
Grant date	Sep 16, 2014
Priority date	—
Expiry date	Jun 6, 2032

Classification

Technology area (CPC B)Performing Operations; Transporting
CPC primaryB25F5/00
WIPO fieldMachine tools
WIPO sectorMechanical engineering

Abstract

The invention relates to a portable handheld work apparatus such as a cutoff machine, motor-driven chain saw, brushcutter, blower apparatus or the like. The apparatus includes a drive motor (2) for driving a work tool (6) and is provided with a security circuit (20). The security circuit (20) switches the drive motor (2) of the work apparatus into an operational-ready state or into an out-of-service state in dependence upon received signals of a receiver unit (18). The receiver unit is configured to receive at least one operating code. The receiver unit (18) is configured for receiving a service code (27) and, with the receipt of a service code, switches the drive motor into only a temporary service state.

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