Carburetor

US8561971B2 · kind B2 · utility

Assignee

• Andreas Stihl AG & Co. KG · DE

Inventors

• Patrick Levien · Großenhain, DE
• Alexander Kraus · Berlin, DE

Key dates

• Filing date: Oct 6, 2011
• Grant date: Oct 22, 2013
• Expiry date: Apr 25, 2032

Classification

• Technology area (CPC F): Mechanical Engineering; Lighting; Heating
• CPC primary: F02D2009/0298
• WIPO field: Engines, pumps, turbines
• WIPO sector: Mechanical engineering

Abstract

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.