Machine element or mechanism – Rotary member or shaft indexing – e.g. – tool or work turret – Preselected indexed position
Patent
1976-08-25
1978-10-03
Scott, Samuel
Machine element or mechanism
Rotary member or shaft indexing, e.g., tool or work turret
Preselected indexed position
B60K 4118
Patent
active
041177479
ABSTRACT:
An automatic gearbox has a planetary gear system and fluid pressure operated friction elements which are operable to act on the gear system to change the gear ratios thereof. Operation of the friction elements is controlled by electronic circuits on the basis of electrical signals indicative of vehicle speed and throttle opening. A manually operable switch is provided for selecting reverse gear and for providing manual overriding signals for the selection of forward gears. The electronic circuits are so arranged that, when a gear is selected manually, operation of the friction elements associated with the gear or gears higher than the selected gear is not carried out until vehicle speeds at least equal to the vehicle speeds at which the said friction elements are operated at full throttle opening in the automatic mode of operation. The electronic circuits have a signal generating circuit for generating a signal the magnitude of which is indicative of vehicle associated with each forward gear change provided by the gearbox.
REFERENCES:
patent: 3267762 (1966-08-01), Reval
patent: 3439564 (1969-04-01), Scholl et al.
patent: 3626254 (1971-12-01), Kawakubo
patent: 3701294 (1972-10-01), Ito et al.
patent: 3826158 (1974-07-01), Flaig
Automotive Products Limited
Chandler Lance W.
Scott Samuel
Winter Lawrence J.
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