Electric shift apparatus with manual override

Details Electric shift apparatus with manual override Electric shift apparatus with manual override

1988-01-11

1989-07-04

Wright, Dirk

Machine element or mechanism

Gearing

Interchangeably locked

74625, B60K 2010

Patent

active

048439010

ABSTRACT:
An electric shift apparatus for use with a motor vehicle having an automatic transmission. The apparatus includes a power module adapted to be mounted on the housing of the transmission proximate the transmission mode select shaft and a control module adapted to be mounted in the passenger compartment of the vehicle. The power module includes an electric motor driving a speed reduction unit and the lower exposed end of the output shaft of the speed reduction unit is adapted to be drivingly coupled to the exposed upper end of the mode select shaft of the automatic transmission. A manual override is provided so that, in the event of a total loss of vehicle electric power, the transmission may be moved manually to any desired position to facilitate emergency servicing of the vehicle. A pointer mounted on an exposed end of the output shaft of the speed reduction unit coacts with indicia provided on the housing of the speed reduction unit to provide a constant visual indication of the instantaneous position of the transmission to assist in the manual override function.

REFERENCES:
patent: 2634622 (1953-04-01), Cripe
patent: 3277734 (1966-10-01), Bernard
patent: 4065983 (1978-01-01), Mimura
patent: 4291586 (1981-09-01), Buetemeister
patent: 4339962 (1982-01-01), Babel
patent: 4428248 (1984-01-01), Broucksou et al.
patent: 4541609 (1985-09-01), Smith
patent: 4570765 (1986-02-01), Makita
patent: 4619151 (1986-10-01), Trachman
patent: 4664217 (1987-05-01), Welch et al.
Pages 8B-8, 8B-9, 8B-10 and 8B-11 from the 1985 Pontiac Fiero Service Manual.

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