Internal-combustion engines – Engine speed regulator – Specific throttle valve structure
Reexamination Certificate
2007-05-08
2007-05-08
Argenbright, T. M. (Department: 3747)
Internal-combustion engines
Engine speed regulator
Specific throttle valve structure
C251S305000
Reexamination Certificate
active
11106941
ABSTRACT:
A throttle valve assembly is held within a passageway in a throttle body. The assembly includes a plate and a pivot shaft. The plate includes a contoured front surface, a contoured back surface, and a mounting receptacle. The mounting receptacle forms smooth bulges at the sides of the plate. The front and back surfaces are smoothly contoured to the bulges. The pivot shaft extends through the mounting receptacle and engages with the throttle body. A method of making a series of throttle bodies includes molding multiple like bodies having first and second passageway portions. The first portions are sized to receive butterfly valves of a standard size. The second portions, positioned downstream from the first portions, have cross sectional openings equal to or smaller than the first portions. The second portions are machined or molded to various sizes adapted to flow fluid into the in-take ports of various size engines.
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Arctic Cat Inc.
Argenbright T. M.
Black Lowe & Graham PLLC
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