192 clutches and power-stop control – Transmission control and clutch control – Common control
Patent
1988-11-16
1991-06-18
Herrmann, Allan D.
192 clutches and power-stop control
Transmission control and clutch control
Common control
192 8715, 192 8717, 192109F, F16D 2500
Patent
active
050243063
ABSTRACT:
A propelling drive control apparatus for a working vehicle comprising hydraulically operable friction clutches, a first clutch control valve for selecting between the friction clutches, and a second clutch control valve connected in series to the first clutch control valve. The second clutch control valve is manually switchable to a declutching position for disengaging the friction clutches, a first clutch engaging position for engaging one of the friction clutches, and a second clutch engaging position intermediate between the declutching position the first clutch engaging position. In this second clutch engaging position one of the friction clutches is operable under a lower hydraulic pressure than in the first clutch engaging position.
REFERENCES:
patent: 2861480 (1958-11-01), Curtis
patent: 3541791 (1970-11-01), Lvovsky et al.
patent: 3715017 (1973-02-01), Jenney
patent: 3850273 (1974-11-01), Murakami
patent: 4093051 (1978-06-01), Kreitzberg
patent: 4293059 (1981-10-01), Lucas
patent: 4560044 (1985-12-01), Nagata
patent: 4579200 (1986-04-01), Murakami et al.
patent: 4598545 (1986-07-01), Harada
Fukui Tetsu
Hattori Akio
Takemura Toshihiko
Yoshii Takashi
Greigg Edwin E.
Greigg Ronald E.
Herrmann Allan D.
Kubota Ltd.
Pitts Andrea
LandOfFree
Propelling drive control apparatus for working vehicle does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Propelling drive control apparatus for working vehicle, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Propelling drive control apparatus for working vehicle will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-141118