Importance

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Abstract

In order to enable a carbureter body formed of a soft material such as a synthetic resin to be coupled easily between an air cleaner and a manifold pipe in its state of not developing a distortion, the carbureter for an internal combustion engine comprises: reinforcing members each having a high rigidity and a length greater than the full length of the carbureter body but smaller than the length obtained by adding this length of the carbureter body to the thicknesses of two elastic sealing members used in coupling the carbureter body to the air cleaner and to the manifold pipe; a plurality of arms for nipping the reinforcing members in their posture of being placed along a suction bore of the carbureter body. Shaft-receiving bores for supporting a throttle valve shaft and a choke valve shaft are disposed at locations at which these valve shafts are not affected by the strains which are apt to develop when the carbureter body is coupled to the air cleaner and to the manifold pipe. Also, on the choke valve shaft and also in the inner faces of these shaft-receiving bores for supporting these valve shafts, means are provided so as to cooperate each other to semi-fix the valve.

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First Claim