Patent ID: 7000906
Filing Date: 2006-02-21
Classification: F02M,Y10S

Abstract:
1. A carburetor for an internal combustion engine including an engine mounted in a portable handheld work apparatus, the carburetor comprising: a carburetor housing defining an intake channel communicating with the engine; a throttle element journalled in said intake channel and being adjustable between a full-load position and an idle position; a pump assembly for supplying additional fuel for said engine; said pump assembly including a pump chamber and a pump piston guided in said pump chamber; means for coupling the position of said pump piston to the position of said throttle element so as to cause fuel to be pumped out of said pump chamber and be supplied to said engine when said throttle element is shifted from said full-load position into said idle position; said coupling means including a control section formed on said throttle element and said pump piston lies against said control section; said control section including at least one control flank: and, said control flank being in contact engagement with said pump piston over a part range between said idle position and a position of said throttle element whereat said throttle element is displaced from said idle position by up to 65% of the entire displacement path to said full-load position.