Parking brake apparatus for automatic transmission vehicle...

Details Parking brake apparatus for automatic transmission vehicle... Parking brake apparatus for automatic transmission vehicle...

2005-12-12

2009-02-03

Lorence, Richard M. (Department: 3681)

192 clutches and power-stop control

Transmission and brake

Motor vehicle

Reexamination Certificate

active

07484613

ABSTRACT:
A parking brake apparatus for an automatic transmission vehicle in one embodiment includes a parking shaft connected to a shift lever, a cam plate secured to the parking shaft, a parking rod assembly operated when the cam plate secured to the parking shaft rotates through manipulation of the shift lever, and a parking gear meshed with a sprag which is actuated by the parking rod assembly. The apparatus comprises a driving section having a driving motor assembly for driving the parking shaft such that the sprag can be engaged with or disengaged from the parking gear when the shift lever is manipulated between P and R, and operating to ensure that a rotational force of a driving motor is added to a disengaging force of the parking rod assembly for disengaging the sprag engaged with the parking gear when the disengaging force is insufficient.

REFERENCES:
patent: 5827149 (1998-10-01), Sponable
patent: 6125983 (2000-10-01), Reed et al.
patent: 6401899 (2002-06-01), Kanehisa et al.
patent: 2005/0066759 (2005-03-01), Hirota et al.
patent: 10316949 (2004-11-01), None
patent: 09-288312 (1997-11-01), None
patent: 2000-074211 (2000-03-01), None

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