The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Nov. 21, 2017
Filed:
Mar. 05, 2008
Peter Simpson, Lower Cambourne, GB;
Rainer Glauning, Aichtal-Groetzingen, DE;
Peter Simpson, Lower Cambourne, GB;
Rainer Glauning, Aichtal-Groetzingen, DE;
Robert Bosch GmbH, Stuttgart, DE;
Abstract
The present invention relates to cutting tools, in particular, to control systems for cutters such as vegetation cutters, especially hedge cutters or trimmers (). Hedge cutters () frequently suffer in use from a problem of blocked cutting blades when they encounter a twig or branch whose size or density exceeds the capacity of the blades. We describe a vegetation cutting apparatus () having a plurality of cutting blades (), at least one of which blades () is drivable by an electric motor. At least one driven blade () is movable between two predefined points of maximum travel. The apparatus () includes a control mechanism which causes a change of direction in the movement of the at least one movable blade at a point intermediate the points of maximum travel in response to an event sensed by the control mechanism.