Air-fuel ratio adjustment device for carburetor
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United States of America Patent
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-
Sep 7, 1999
Issued Date -
N/A
app pub date -
Jun 13, 1997
filing date -
Jun 13, 1996
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A fastening member made of an elastic material is press-fitted in a gapless manner in an insertion hole that divides screw holes in a carburetor body into forward and rearward sections. Screw rods of adjustment valves are screwed into the screw holes and through screw through-holes formed in the fastening member. The screw through-holes have female screw-threads formed by thread rolling. The female screw-threads maintain pressing contact with the surfaces of male screw-threads on the screw rods as a result of the elastic recovery force of the female screw-threads, so that rattling and fuel leakage tend to be prevented.
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