Forming method of throttle apparatus for internal combustion...

Details Forming method of throttle apparatus for internal combustion... Forming method of throttle apparatus for internal combustion...

2006-09-19

2006-09-19

Bryant, David P. (Department: 3729)

Metal working

Method of mechanical manufacture

Prime mover or fluid pump making

C029S888450, C029S888460, C029S527100, C264S242000, C264S328800, C264S334000, C425S573000

Reexamination Certificate

active

07107678

ABSTRACT:
A throttle valve and the throttle body are formed substantially simultaneously in the same dies. The melted resin is injected in to a cavity through a pair of valve gates. The valve gates are symmetrically located with respect to the throttle valve shaft. A deformation of the throttle valve can be avoided because a stress concentration on the metal shaft of the throttle valve is reduced in opening the dies.

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