Air-fuel ratio adjustment device for carburetor

Details Air-fuel ratio adjustment device for carburetor Air-fuel ratio adjustment device for carburetor

1997-06-13

1999-09-07

Chiesa, Richard L.

Gas and liquid contact apparatus

Fluid distribution

Valved

251903, 261DIG38, 261DIG84, F02M 710

Patent

active

059483253

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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patent: 4283353 (1981-08-01), Miller
patent: 4336208 (1982-06-01), Gerhardy
patent: 4392633 (1983-07-01), Van Winkle
patent: 4601310 (1986-07-01), Phillips
patent: 5201491 (1993-04-01), Domangue

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