Motor speed sensor assembly for detecting rotational...

Electricity: measuring and testing – Magnetic – Displacement

Reexamination Certificate

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C324S165000, C324S173000, C324S207250

Reexamination Certificate

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07872470

ABSTRACT:
A drive assembly for a vehicle door is provided. The drive assembly includes a motor having a driving member. The drive assembly further includes a housing having a shaft rotatably received therein. The drive assembly further includes an input member being rotatably received upon the shaft. The input member is operatively associated with the driving member. The drive assembly further includes a rotor fixedly secured to the shaft. The drive assembly further includes first and second Hall effect sensor modules mounted to the housing in a facing spaced relationship with respect to the plurality of teeth of the rotor that generate first and second signals, respectively. The first and second signals have a quadrature relationship with respect to one another and indicate a rotational direction of the rotor when the plurality of teeth are rotating past the first and second Hall effect sensor modules.

REFERENCES:
patent: 5046283 (1991-09-01), Compeau et al.
patent: 5313795 (1994-05-01), Dunn
patent: 5319880 (1994-06-01), Kuhlman
patent: 5319881 (1994-06-01), Kuhlman
patent: 2003/0173955 (2003-09-01), Uenoyama
patent: 2003/0222642 (2003-12-01), Butzmann
patent: 2007/0252590 (2007-11-01), Kondo
U.S. Appl. No. 11/400,250, filed Apr. 7, 2006.

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