Electrical transmission or interconnection systems – Vehicle mounted systems – Automobile
Patent
1974-12-19
1976-09-28
Schaffer, Robert K.
Electrical transmission or interconnection systems
Vehicle mounted systems
Automobile
74365, H01H 4700
Patent
active
039834050
ABSTRACT:
A shift control system is disclosed for use with a multi-stage transmission adapted to be disposed in a plurality of states in which various serial combinations of gears are disposed between an input and an output shaft. Two position solenoid valves are provided to control the engagement of each stage. A manually energized state selector for the transmission may take the form of either a shiftable lever or a plurality of push buttons, only one of which may be engaged at a single time. Pairs of single pole switches are associated with each state of the selector switch and are wired into two sets. Power is applied to one set or the other depending upon the position of a shift direction switch. Circuitry connects each solenoid valve to at least one switch in the upshift set and one in the downshift set. The higher shift ratios may be selectively deenergized to prevent the transmissionn from being accidently disposed in an excessively high shift ratio. A tachometer controlled comparator inhibits the deenergization of a high ratio transmission stage until the engine speed is low enough to prevent racing.
REFERENCES:
patent: 3652901 (1972-03-01), Wakamatsu et al.
Ginsburg Morris
Schaffer Robert K.
LandOfFree
Shift control system for multi-stage 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 Shift control system for multi-stage transmission, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Shift control system for multi-stage transmission will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2082480