Vehicle body with powered lift type tailgate

Land vehicles: bodies and tops – Bodies – Door or window with specified vehicle feature

Patent

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Details

49 28, 49280, 49358, 296 56, 2961468, B60J 510

Patent

active

055314988

ABSTRACT:
A passenger van tailgate hinged for swinging movement about a horizontal axis at its upper edge is forced upward to open by a pair of spring devices under the control of a powered actuator operating through cables. The actuator is mounted on the tailgate and includes an electric motor drivingly connected by a worm shaft and worm gear and additional reduction gearing to a pulley on which the cables are wound. The cables are secured at one end to the vehicle structure, extend along side the respective spring devices, and are wound at their other end in the same direction on the pulley. The tailgate is opened by operating the actuator motor to unwind the cables and allow the spring devices to open the tailgate at a rate determined by the speed of the motor. The tailgate is closed by operating the actuator motor in reverse to rewind the cables and compress the spring devices. A clutch maintains a drive connection between the worm gear and pulley to effect normal tailgate operation and is adapted to slip to allow manually applied force on the tailgate to operate same when the motor is not operating. There is also provision for shutting the actuator motor off when the tailgate encounters an obstacle during closure.

REFERENCES:
patent: 3422572 (1969-01-01), Pollak
patent: 3713472 (1973-01-01), Dozois
patent: 3716945 (1973-02-01), Cooper et al.
patent: 3757472 (1973-09-01), Rogakos
patent: 4728141 (1988-03-01), Motazawa et al.
patent: 4813303 (1989-03-01), Breezer et al.
patent: 5046283 (1991-09-01), Compeau et al.

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