Patent ID: 6938884
Filing Date: 2005-09-06
Classification: F02M

Abstract:
1. A carburetor arrangement for a portable handheld work apparatus, the carburetor arrangement comprising: a carburetor; an accelerator pump; a venting line connected to said accelerator pump; a venting pump acting on said accelerator pump via said venting line; a check valve having an inflow end and an outflow end lying opposite said inflow end and wherein there is a difference pressure between said outflow end and said inflow end; said check valve being mounted in said venting line with said outflow end facing in a direction toward said venting pump; said check valve including a valve body movable between a first position whereat said check valve is closed and a second position whereat said check valve is open; pretensioning means for holding said valve body in said first position when said difference pressure lies below a preselected value thereof; and, supporting means for operating on said valve body and being actuable on one side thereof by pressure at said outflow end without considering the pressure at said inflow end or by pressure at said inflow end without considering pressure at said outflow end.