Brakes – Operators – Electric and mechanical
Reexamination Certificate
2005-12-27
2005-12-27
Kramer, Devon C. (Department: 3683)
Brakes
Operators
Electric and mechanical
C188S162000, C188S00200R, C188S00111E
Reexamination Certificate
active
06978870
ABSTRACT:
An electrically powered actuator mechanism for operating a vehicle parking brake including a reversible electrical motor having output gearing driving a sector gear. A wrapped spring clutch drivingly connects the sector gear to an intermediate operator cable wind up wheel. The intermediate cable is connected to the brake cable to set the brakes when the operator cable is wound up by energization of the motor in one direction, with a load sensor turning off the motor when a predetermined tension load is reached. Locking motor gearing holds the brake in the set condition. Reversal of the motor unwinds the cable to release the parking brake. A self adjusting feature is provided by a pretensioned clock spring creating a torsional bias on the wind up wheel tending to maintain a predetermined tension in the brake cable. A spring clutch is released by engagement of a release arm to allow the clock spring to adjust the wind up wheel. A cable operated manual release causes a release lever to engage the clutch spring release arm to allow the cable to release although the clock spring maintains a minimum tension after release of the wind up wheel.
REFERENCES:
patent: 4373402 (1983-02-01), Barrett
patent: 4850242 (1989-07-01), Hass et al.
patent: 5180038 (1993-01-01), Arnold et al.
patent: 5590744 (1997-01-01), Belmond
patent: 6193022 (2001-02-01), Bode
patent: 6213259 (2001-04-01), Hanson et al.
patent: 6249737 (2001-06-01), Zipp
patent: 6386338 (2002-05-01), Powrozek
patent: 6522967 (2003-02-01), Pfeil et al.
patent: 6609595 (2003-08-01), Flynn et al.
patent: 6782978 (2004-08-01), Tachiiri et al.
patent: 2002/0066626 (2002-06-01), Gill et al.
patent: 2003/0066714 (2003-04-01), Flynn et al.
patent: 2004/0011605 (2004-01-01), Tachiiri et al.
patent: 2005/0000762 (2005-01-01), Powrozek et al.
patent: 001462330 (2004-09-01), None
patent: 5-286424 (1993-11-01), None
patent: WO98/56633 (1998-12-01), None
Powrozek Bryan Daniel
Slumba Michael Andrew
Dura Global Technologies Inc.
Jack Benefiel Law Offices
Kramer Devon C.
Watson Dean B.
LandOfFree
Self adjusting electrically powered parking brake actuator... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Self adjusting electrically powered parking brake actuator..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Self adjusting electrically powered parking brake actuator... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3523111