Dual mode shifter for automatic transmissions

Details Dual mode shifter for automatic transmissions Dual mode shifter for automatic transmissions

1982-06-09

1985-05-07

Herrmann, Allan D.

Machine element or mechanism

Control lever and linkage systems

Multiple controlled elements

74142, 74473R, 74475, 74538, 116 281, 116DIG20, 340143, 34081519, G05G 706, F16H 5706, G09F 900

Patent

active

045150338

ABSTRACT:
A gear shifter for automatic transmissions having a true ratchet mode for operating between the drive gears and a gate mode optionally usable for the drive gears. Only gate mode accesses park and reverse gears. The invention provides a floating pawl at the ends of two links in a three member, four pivot point linkage. This linkage provides the advantages that the operating handle is always engaged and yet permits easy change-over from one mode to the other.

REFERENCES:
patent: 2671425 (1954-03-01), Schneider
patent: 3231857 (1966-01-01), Miller
patent: 3643622 (1972-02-01), Cryer
patent: 3665775 (1972-05-01), Freeman
patent: 3701333 (1972-10-01), Schwerdhoefer
patent: 3800614 (1974-04-01), Johnson
patent: 3941008 (1976-03-01), Cambria
patent: 4084448 (1978-04-01), Wolfe
patent: 4370897 (1983-02-01), Carlo

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