Vehicle transmission shifter with park lock controlled by magnet

Details Vehicle transmission shifter with park lock controlled by magnet Vehicle transmission shifter with park lock controlled by magnet

1992-10-02

1994-01-04

Herrmann, Allan D.

Machine element or mechanism

Control lever and linkage systems

Multiple controlling elements for single controlled element

192 4A, 335179, 335229, B60K 4126, F16H 6336

Patent

active

052750655

ABSTRACT:
A shift mechanism for the transmission of a vehicle in which a locking arm is provided to prevent shifting of the shift lever, the locking condition of the locking arm being controlled by a magnetic latch which includes a permanent magnet that produces a magnetic flux to hold the arm in locked position. A coil is provided in the magnetic latch to produce a magnetic flux that opposes the magnetic flux produced by the permanent magnet to destroy the holding force of the permanent magnet when a brake switch is closed to energize the coil thus permitting the locking arm to be moved to an unlocked position and the shift lever to be shifted.

REFERENCES:
patent: 3755766 (1973-08-01), Read, Jr.
patent: 4072918 (1978-02-01), Read, Jr.
patent: 4683452 (1987-07-01), Henley
patent: 4887702 (1989-12-01), Ratke et al.
patent: 4947967 (1990-08-01), Kito et al.
patent: 5150593 (1992-09-01), Kobayashi et al.

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