Andreas Stihl Ag Co. Kg

Staiger Gmbh & Co. Kg

Patrick Levien

Georg Maier

Wolfgang Layher

Patrick Schlauch

Sebastian Hanussek

Felix Mayer

Tobias Deigendesch

Alexander Kraus

Jens Peter Ramler

Marc Staiger

Alexander Klein

Peter Kofink

Walter Gernhard

Stefan Waldinsperger

Marcus Wieduwilt

Bruno Staiger

Achim Baumhauer

Sebastian HANUßEK

The invention relates to an electromagnetic valve having a valve housing () and a valve opening () with a valve seat () and an electric drive coil () and a magnetic yoke () and a longitudinal centre axis (). The magnetic yoke () is assigned a metallic plate armature () which is mounted movably and has an armature disc (). The armature disc () lies sealingly with a sealing surface () against the valve seat () in a first switching position of the valve, and opens the valve seat () in a second switching position of the valve. According to the invention, the valve seat () is configured on a valve component (), wherein the valve component () has at least one valve opening () which lies at a radial spacing (r) from the longitudinal centre axis (). The valve seat () of the valve opening (), which valve seat () corresponds with direct body contact with the sealing surface () of the armature disc () of the plate armature (), consists of metal.

Electromagnetic valve

A handheld work apparatus has a tool and a brake assembly for the tool. The brake assembly has an actuating element which acts on a brake element of the brake assembly. The actuating element is movable between a fixed position wherein the tool is not braked, and a released position, wherein the brake element brakes the tool. To fix the actuating element in the fixed position, an electromagnet is provided. The electromagnet interacts with an anchor on the actuating element. The anchor is mounted via a pivot joint on an anchor pin to be pivotable about a pivot axis. A guide includes a guide part connected to the anchor and a guide part connected to the yoke, wherein, in the fixed position of the actuating element, the guide parts guide the anchor relative to the yoke in a transverse direction of an outrigger of the apparatus.

Handheld work apparatus having a work tool and a brake assembly for the work tool

An electromagnetic valve has a valve chamber which has an inflow opening for supplying a liquid and an outlet for discharging the liquid. The valve includes a valve seat and a valve member that is assigned to the valve seat. The fluidic connection between the inflow opening and the outlet of the valve is interrupted when a valve seat is closed by the valve member. The valve member is held on an armature plate which is moved by an electromagnetic drive unit toward an end stop which is formed by a first stop surface. In order for the operative capability of the valve to be guaranteed in the case of wear on the end stop, the armature plate is assigned a second stop surface which upon a predefined wear on the first stop surface forms a downstream end stop.

An adjustment safeguard for a set screw on a carburetor includes a cap held non-rotatably on the head of the set screw. The cap is surrounded by a coaxially positioned wall sleeve fixed to the housing. A rotation stop is fixed to the housing to limit the angle of rotation of the cap in the sleeve in the rotational direction of the set screw. A through-opening in the cap permits inserting a tool into an engagement opening in the head of the set screw to avoid destruction by introducing too much torque into the adjustment safeguard. The form and opening width of the through-opening is limited by the use of a metal material such that a tool larger than the adjustment tool is not able to be inserted through the through-opening into the head of the set screw. The engagement opening is flexible to limit a maximum allowable adjustment torque.

Adjustment safeguard for a set screw on a carburetor

A carburetor has a throttle element rotatably supported on a throttle shaft and a choke element rotatably supported on a choke shaft. A first coupling element is fixedly connected to the throttle shaft. A second coupling element is connected to the choke shaft. The first and second coupling elements define in a locked position a start position of throttle element and choke element. The locked position is released by rotation of the throttle shaft in opening direction of the throttle element. The locked position is released by rotation of the choke shaft in opening direction of the choke element. One of the first and second coupling elements is an at least partially elastic coupling element. Upon rotation of the choke shaft from the locked position into an open position, the elastic coupling element is elastically deformed and releases the locked position between the first and second coupling elements.

Carburetor

Growing community of inventors

Ebersbach, Germany

Patrick Levien