Machine element or mechanism – Control lever and linkage systems – Hand operated
Reexamination Certificate
2005-06-02
2009-02-03
Luong, Vinh T (Department: 3656)
Machine element or mechanism
Control lever and linkage systems
Hand operated
C188S00200R, C188S20400R
Reexamination Certificate
active
07484432
ABSTRACT:
A parking brake device includes a booster mechanism having an intermediate lever pivotally supported at a bracket, and a movable pulley supported at a tip end of the intermediate lever. When a first operation cable is pulled by operating a parking brake pedal, the movable pulley around which an intermediate portion of the inner cable is wound is pulled with doubled force, and the doubled pulling force is further boosted due to the lever ratio of the intermediate lever which supports the movable pulley, and is transmitted via an equalizer and a second operation cable to a brake device provided at a wheel with the pulling force boosted to a boost ratio twice as much as the lever ratio. By combining the movable pulley and the intermediate lever, the length of the intermediate lever to obtain the same boost ratio can be made half as compared with the case where only the intermediate lever is used, thereby making the booster mechanism compact. Thus, a parking brake device is made compact while a boost ratio of a booster mechanism of the parking brake device is secured.
REFERENCES:
patent: 1524342 (1925-01-01), De Ruyter
patent: 1996332 (1935-04-01), Grinslade
patent: 4205735 (1980-06-01), Murray
patent: 6186282 (2001-02-01), Juan
patent: 6305238 (2001-10-01), Gabas
patent: 6419328 (2002-07-01), Kinoshita
patent: 6997289 (2006-02-01), Iwagawa et al.
patent: 2003/0070884 (2003-04-01), Wang
patent: 2004/0163896 (2004-08-01), Wang
patent: 2 325 539 (1974-11-01), None
patent: 199 53 947 (2000-05-01), None
patent: 0 894 686 (1998-07-01), None
patent: 2 525 167 (1983-10-01), None
patent: 1 467 679 (1977-03-01), None
patent: 60-92948 (1985-05-01), None
patent: 01-289750 (1989-11-01), None
patent: 2003-335235 (2003-11-01), None
Translation of DE 199 53 947 A1, Thomas Schmidt, May 2000, PTO Aug. 1972.
Blackman William D.
Carrier Joseph P.
Carrier Blackman & Associates P.C.
Honda Motor Co. Ltd.
Luong Vinh T
LandOfFree
Parking brake device does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Parking brake device, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Parking brake device will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-4091203