Planetary gear transmission systems or components – With means to vary drive ratio or disconnect drive – Plural elements selectively braked
Reexamination Certificate
2011-08-16
2011-08-16
Holmes, Justin (Department: 3655)
Planetary gear transmission systems or components
With means to vary drive ratio or disconnect drive
Plural elements selectively braked
C903S906000, C903S911000, C903S918000
Reexamination Certificate
active
07998016
ABSTRACT:
A gear train includes a first planetary gear set including a first sun gear, a first ring gear, and a first carrier and a second planetary gear set including a second sun gear, a second ring gear, and second carrier. The gear train also includes a first clutch configured to selectively connect the first carrier with the second carrier and a second clutch configured to selectively connect the first sun gear with the second sun gear. The gear train also includes a first brake configured to selectively fix the first sun gear, a second brake configured to selectively fix the second sun gear, and a third brake configured to selectively fix the first carrier.
REFERENCES:
patent: 5603671 (1997-02-01), Schmidt
patent: 5853345 (1998-12-01), Park
patent: 6551208 (2003-04-01), Holmes et al.
patent: 6592484 (2003-07-01), Tsai et al.
patent: 6837816 (2005-01-01), Tsai et al.
patent: 6852053 (2005-02-01), Nakano et al.
patent: 7070530 (2006-07-01), Ai et al.
patent: 7117965 (2006-10-01), Yatabe et al.
patent: 7128675 (2006-10-01), Klemen et al.
patent: 7169074 (2007-01-01), Raghavan et al.
patent: 7192378 (2007-03-01), Raghavan et al.
patent: 7195573 (2007-03-01), Bezian et al.
patent: 7214154 (2007-05-01), Klemen et al.
patent: 7220202 (2007-05-01), Singh et al.
patent: 7291080 (2007-11-01), Minagawa et al.
patent: 7389168 (2008-06-01), Imazu et al.
patent: 7395837 (2008-07-01), Foster et al.
patent: 2006/0052199 (2006-03-01), Singh et al.
patent: 2007/0287564 (2007-12-01), Cho et al.
patent: 2007/0287565 (2007-12-01), Cho et al.
patent: 2008/0125264 (2008-05-01), Conlon et al.
patent: 2008/0125265 (2008-05-01), Conlon et al.
patent: 2008/0207373 (2008-08-01), Conlon
Lane William H.
Mei Barry
Rice James Stephen
Si Baojun
Caterpillar Inc.
Finnegan Henderson Farabow Garrett & Dunner LLP
Holmes Justin
LandOfFree
Universal gear train does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Universal gear train, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Universal gear train will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2779400