Carburetor arrangement of a portable handheld work apparatus

Details Carburetor arrangement of a portable handheld work apparatus Carburetor arrangement of a portable handheld work apparatus

2005-09-06

2005-09-06

Chiesa, Richard L. (Department: 1724)

Gas and liquid contact apparatus

Fluid distribution

Pumping

C261S035000

Reexamination Certificate

active

06938884

ABSTRACT:
The invention relates to a carburetor arrangement of a portable handheld work apparatus and includes a carburetor (1), an accelerator pump (2) and a venting pump (3). The venting pump (3) acts on the accelerator pump (2) via a venting line (4). A check valve (5) is mounted in the venting line (4) in such a manner that its outlet end (6) is directed in the direction of the venting pump (3). A pretensioning device (7) is provided which holds a valve body (8) of the check valve (5) closed below a selected difference pressure between the outflow end (6) and an opposite-lying inflow end (9). A support device (10) which acts on the valve body (8) and is actuable, at one end, by pressure at the outflow end (6) without considering pressure at the other end (9) or by pressure on the inflow end (9) without considering the pressure on the other end (6).

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patent: 2002/0158349 (2002-10-01), Osburg et al.
patent: 5-164001 (1993-06-01), None

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