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US 6,354,267 B1Granted
Injection molded throttle body
AssigneeBorgWarner Inc.
InventorsGary W. Kotchi, Michael J. Halsig
Life of this patent
Estimating the term…
Abstract
An injection molded throttle body having a one-piece lever shaft and plate which is installed as a single piece unit in a laterally split throttle body housing.
Claims28
A throttle body for use on an engine comprising:
- an injection molded throttle body housing including a central intake bore therethrough, said throttle body including a two-piece assembly including an air discharge portion and an air intake portion;
- a throttle plate member pivotally disposed in said bore for metering airflow through said throttle body, said throttle plate member including a shaft member effective for rotating said plate member where said throttle plate member and said shaft are an integrally formed one piece injection molded assembly and installed in said throttle body as a single piece, and
- a portion of one of said air discharge portion or said air intake portion for forming a close tolerance bore for sealing about an outer periphery of said throttle plate without throttle plate binding.
A throttle body for use on an engine comprising:
- a two-piece throttle body and a throttle plate member;
- said two-piece throttle body for defining a central bore having an axis, said two-piece throttle body including an air intake portion and an air discharge portion, said air intake portion and said air discharge portion are joined as an integral unit about a plane perpendicular to the axis of the central bore, said intake portion and said air discharge portion defining a bore along said plane for pivotally securing said throttle plate member in said throttle body, a portion of one of said air discharge or said air intake defines a close tolerance fit about a periphery of said throttle plate member;
- said throttle plate member including a shaft member and a throttle plate integrally molded to form a one-piece injection molded unitary part, which is assembled as a unitary part into said throttle body.
A throttle body for use on an engine comprising:
- a two-piece throttle body and a throttle plate member, said throttle plate member including an outer peripheral edge;
- said two-piece throttle body for defining a central bore having an axis, said two-piece throttle body including an air intake portion and an air discharge portion, said air intake portion and said air discharge portion are joined as an integral unit about a plane perpendicular to the axis of the central bore, said intake portion and said air discharge portion defining a bore along said plane for pivotally securing said throttle plate member in said throttle body, wherein one of said air discharge portion or air intake portions defines a thin walled lip portion which extends beyond a midpoint of said shaft portion and forms a close tolerance fit about the outer periphery of said throttle plate;
- said throttle plate member including a shaft member and a throttle plate integrally molded to form a one-piece injection molded unitary part, which is assembled as a unitary part into said throttle body.
Dependencies are inferred from the claim text.