Andreas Stihl Ag Co. Kg

Basf Se Corporation

Andreas Schulz

Przemyslaw Zurek

Claus Kremoser

Ulrich Abel

Jan Kurzenberger

Ulrich Deuschle

Olaf Schmidt

Ralf Blechschmidt

Claus-Peter Hamisch

Kai Schmitz

Matthias Harer

Tobias Bernhard

Markus Nefzger

A power tool has a handle operatively connected with vibration damping across a vibration gap to a drive motor with throttle element. An actuating device on the handle actuates the throttle element pivotably supported in a housing. A coupling element bridging the vibration gap connects actuating device to throttle element. The actuation movement of the actuation device is transmitted as rotation about an axis transverse to the vibration gap. An intermediate element is pivotably supported on an actuating element connected to the throttle element. The coupling element acts on the intermediate element and, over part of the actuation movement, contacts a contact region of the intermediate element. A guide for the intermediate element changes a position of the contact region relative to the housing based on a rotational position of the actuating element by changing a pivot position of the intermediate element relative to the housing.

Hand-guided power tool

A work apparatus has a first and a second assembly. The second assembly is mounted movably in relation to the first assembly via at least one antivibration element. Formed between the first assembly and the second assembly is a vibration gap, which is bridged by the antivibration element. The work apparatus has a switch, for actuation by an operator, which includes a first contact element and a second contact element. When the switch is closed, the first contact element and the second contact element contact each other. When the switch is open, the first and second contact element do not establish an electrically conductive contact. The second contact element is part of the second assembly. The first contact element is part of the first assembly and, when the switch is closed, the first contact element and the second contact element bridge the vibration gap between the first and second assembly.

Handheld work apparatus

A power tool has an internal combustion engine with a carburetor with choke element pivotably arranged therein. A starter device with an actuating element has an operating position, off position, and at least one start position. A coupling element connects the actuating element with a choke actuating lever. The actuating element, upon adjustment from operating position into the at least one start position, moves the choke element into its start position. The connection between actuating element and choke actuating lever has a relative movement device which, in one position of the choke element, enables movement of actuating element relative to choke actuating lever. A holding device with guide contour is secured on the carburetor housing. In a start position of the choke element, the guide contour prevents movement of the actuating element relative to choke actuating lever from its start position into the operating position.

Hand-guided power tool with an internal combustion engine

A carburetor () for an internal combustion engine has an intake channel section () wherein a throttle element and a choke element are supported to pivot about respective rotational axes (). The carburetor () has a starter unit which has an operating position, an off position and at least one start position. In the start position, the starter unit fixes defined positions of the throttle element and the choke element. A simple manipulability and a multifaceted operational use of the carburetor () are achieved when the starter unit includes an actuating lever () and an intermediate lever () having respective rotational axes () which are at a distance (c) to each other at least at the elevation of the intermediate lever () and when the actuating lever () acts on the throttle element via the intermediate lever ().

Carburetor arrangement for an internal combustion engine

A carburetor arrangement of a portable handheld work apparatus includes a carburetor () which is fixed to a motor housing () of the work apparatus by elastic support elements (). A warm air channel () is provided for conducting warmed air () to the carburetor (). At least one part of the warm air channel () runs through at least one support element ().

Carburetor arrangement of a portable handheld work apparatus

Growing community of inventors

Ettlingen, Germany

Andreas Schulz