Motors: expansible chamber type – Working member position feedback to motive fluid control – With means to vary feedback signal in response to rate of...
Patent
1998-12-07
1999-09-07
Ryznic, John E.
Motors: expansible chamber type
Working member position feedback to motive fluid control
With means to vary feedback signal in response to rate of...
91375R, 91378, F15B 1316, F15B 910
Patent
active
059470003
ABSTRACT:
A servo operation apparatus for a transmission comprising an input shaft to which the shift-change operation force is mechanically transmitted from a shift lever, a servo unit for boosting the shift-change operation force by feeding a working fluid, and a valve device which feeds the working fluid to, or drains the working fluid from, the servo unit depending upon the shift-change operation of the shift lever, wherein provision is made of an working fluid feed control means which feeds the working fluid in such a manner that the pressure of the working fluid in the servo unit is raised with a steep gradient in the former half until a predetermined initially raised pressure value is reached and, thereafter, is raised in the latter half with a gradient less steep than that of said former half. Or, when the apparatus is equipped with a reaction device which imparts reaction to the shift-change operation force transmitted to the input shaft by utilizing the working fluid, provision is made of a working fluid feed control means which feeds the working fluid in such a manner that the rise of the pressure of the working fluid in the reaction device is delayed behind the rise of the pressure of the working fluid in the servo unit.
REFERENCES:
patent: 1082733 (1913-12-01), Casey et al.
patent: 1830636 (1931-11-01), Bragg et al.
patent: 1848923 (1932-03-01), Almen
patent: 1978738 (1934-10-01), Bragg et al.
patent: 2579028 (1951-12-01), Baldwin
patent: 2605750 (1952-08-01), Kupiec
patent: 2755777 (1956-07-01), Gerwig et al.
patent: 4542662 (1985-09-01), Bieber
patent: 4742724 (1988-05-01), Jimbo et al.
Imasato Kazunari
Kazumori Keiichi
Muto Hitoshi
Nissan Diesel Motor Co., Ltd.
Ryznic John E.
Sanwa Seiki Ltd.
LandOfFree
Servo operation apparatus for a transmission does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Servo operation apparatus for a transmission, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Servo operation apparatus for a transmission will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1792788