Patent ID: 6868813

Claim:
An elastic connecting piece for connecting a carburetor to an inlet channel of an internal combustion engine of a portable handheld motor-driven work apparatus, said connecting piece comprising: an annular conduit-like member defining a longitudinal direction and having an interior wall surface; said annular conduit-like member having a peripherally extending expansion fold for compensating for relative position changes between said carburetor and said engine; said expansion fold defining an annular gap and subdividing said conduit-like member into a carburetor-end section and an engine-end section; said annular conduit-like member having a seal lip and a peripherally extending seal seat in the region of said expansion fold and said seal seat having an axial length (g); said seal lip coming into contact engagement with said seal seat when said expansion fold changes in length and said seal lip bridges said gap thereby substantially closing the seal fluid tight to the interior of said annular conduit-like member; and, said seal seat being configured as an annularly-shaped step for receiving said seal lip so as not to cause an obstruction to flow along said interior wall surface where said seal seat and said seal lip coact to close said seal.