192 clutches and power-stop control – Vortex-flow drive and clutch – With brake
Patent
1989-07-17
1990-10-30
Braun, Leslie A.
192 clutches and power-stop control
Vortex-flow drive and clutch
With brake
192 4C, 74850, B60K 4126
Patent
active
049662627
ABSTRACT:
A transmission safety locking lever apparatus prevents a transmission from being shifted from park or neutral into either drive or reverse unless the vehicle brakes are applied. The apparatus includes first and second spaced apertures formed in a gear shift lever connected to the gear shift shaft coupled to and extending from the transmission. A lock pin movable between extended and retracted positions is biased to the extended position to engage one of the first and second apertures in the gear shift lever when the transmission is in either park or neutral. An actuator retracts the lock pin to enable the transmission to be shifted to any gear position from park or neutral only when the vehicle brakes are applied. A sensor is provided for detecting the application of the vehicle brakes via a predetermined pressure in the vehicle brake system. Electric current is applied to the actuator to activate the actuator when the pressure sensor detects a predetermined pressure in the vehicle brake system indicating application of the vehicle brakes to retract the lock pin from the gear shift lever.
REFERENCES:
patent: 2426365 (1947-08-01), Matlock
patent: 2890581 (1959-06-01), Lewis
patent: 3169616 (1965-02-01), Hunsaker et al.
patent: 3942614 (1976-03-01), Thompson
patent: 4096930 (1978-06-01), Viscardi
patent: 4473141 (1984-09-01), Mochida
patent: 4485694 (1984-12-01), Mochida
patent: 4530426 (1985-07-01), Mylander
patent: 4572340 (1986-02-01), Pierce
Braun Leslie A.
Pitts Andrea
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