Appeal No. 2001-0724
Application No. 09/251,602
BACKGROUND
The invention is directed to an integral throttle body and torque motor.
Representative claim 1 is reproduced below.
1. A motorized throttle valve assembly comprising:
(a) a throttle body defining an engine air inlet passage therethrough;
(b) shaft means extending transversely through said inlet passage and
journalled for rotational movement on said body, said shaft means including
driving portions thereof extending externally of said throttle body;
(c) a valve member disposed in said inlet passage and rotationally
moveable with said shaft means;
(d) a rotor including material having a relatively high magnetic
permeability disposed on said shaft means in driving arrangement with said shaft
means, and including a plurality of magnetized pole segments thereon;
(e) a motor housing having a stator of relatively high magnetic
permeability therein, said stator having a coil of conductive material wound
thereon and defining a pair of axial pole segments;
(f) a mounting member having said motor housing attached thereto
retaining said rotor therein with said shaft means received through said motor
housing, said rotor pole segments each defining an axial air gap with said stator
pole segments wherein said motor housing, said rotor, said stator with said coil,
said shaft means and said mounting member are formed in a sub-assembly and
pre-calibrated;
(g) means for attaching said sub-assembly to said throttle body; and,
(h) connector terminal means connected to said coils and adapted for
electrical connection thereto externally.
The examiner relies on the following references:
Kawahira 4,650,156 Mar. 17, 1987
Shiraki et al. (Shiraki) 4,651,041 Mar. 17, 1987
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