Throttle valves having spherical shaped edges

Details Throttle valves having spherical shaped edges Throttle valves having spherical shaped edges

2005-02-15

2005-02-15

Bastianelli, John (Department: 3751)

Valves and valve actuation

Limit stop

Rotary valve

C251S305000, C123S337000

Reexamination Certificate

active

06854709

ABSTRACT:
Throttles (10) include a bore (1b) defined within throttle body (1a). A longitudinal axis defined within the bore serves as a throttle air flow channel. Throttle shaft (3) extends across the air flow channel and is rotatably supported by the throttle body about a rotational axis. Throttle valve (5) is coupled to the throttle shaft and opens and closes the air flow channel by rotating throttle shaft and throttle valve within the bore. The throttle valve extends perpendicularly to the longitudinal axis of the bore when the throttle valve is disposed in a fully closed position. Clearance (S) is defined between a peripheral edge (5a) of throttle valve and an inner wall of the bore when the throttle valve is in the fully closed position. The peripheral edge of the throttle valve end defines a substantially spherical surface having a radius (R) of curvature with respect to the rotational axis.

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