Manual transmission and ignition interlock

Details Manual transmission and ignition interlock Manual transmission and ignition interlock

1994-10-11

1996-10-22

Marmor, Charles A.

Machine element or mechanism

Control lever and linkage systems

Multiple controlled elements

477 99, 70248, B60K 2004

Patent

active

055665810

ABSTRACT:
A manual transmission and ignition interlock is provided for a vehicle having a manual transmission operated by a shift lever. A solenoid is movable between positions blocking and unblocking movement of the vehicle ignition to OFF. A latch bar carried by the shift lever is biased to a latched position and can be moved to unlatched position by a pull-up ring on the shift lever. The latch bar is cammed downward against the spring bias out of latched position when it is extended through a slot in a latch retainer when the shift lever is moved to REVERSE, and then snaps up to latch the shift lever. Another solenoid has a plunger which extends to underlie the latch bar and trap it, thus locking the latched shift lever in REVERSE. In one embodiment, bi-stable solenoids are controlled by a controller that is provided with high and low current inputs from branch circuits that include control switches operated by ignition position. The controller extends the latch solenoid when the shift lever is moved to REVERSE and the ignition is moved to ACCESSORY. This closes a switch, causing the controller to retract the ignition solenoid and enable movement to OFF. In another embodiment, a control circuit uses conventional solenoids.

REFERENCES:
patent: 1818241 (1931-08-01), Moulton
patent: 4473141 (1984-09-01), Mochida
patent: 4524635 (1985-06-01), Hulin et al.
patent: 4693135 (1987-09-01), LaRocca et al.
patent: 5181592 (1993-01-01), Pattock
patent: 5197356 (1993-03-01), Kobayashi et al.
patent: 5226303 (1993-07-01), Dieden et al.
patent: 5421792 (1995-06-01), Kataumi et al.

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