Movable or removable closures – With operator for movably mounted closure – Operating lever or link and closure swing about parallel axes
Patent
1994-08-18
1995-09-12
Cuomo, Peter M.
Movable or removable closures
With operator for movably mounted closure
Operating lever or link and closure swing about parallel axes
49 28, E05F 1124
Patent
active
054488567
ABSTRACT:
A tailgate is hinged to a passenger van type vehicle body above a substantially vertical rear access opening for swinging movement about a horizontal hinge axis. The tailgate is counterbalanced through its range of movement by spring devices and is opened and closed by a powered actuator mounted on a rear vehicle body pillar. The actuator includes a reversible electric motor driving a worm shaft that drives a worm gear to pivot a crankarm about an axis parallel to the hinge axis. A roller mounted on the crankarm is received in a guide channel that is fixed to the tailgate and extends at right angles to the hinge axis with the pivoting movement of the crankarm thereby translated into swinging tailgate opening and closing movement. The motor is connected with torque sensing circuitry that detects an excessive motor torque demand when the tailgate encounters an obstacle and stops the motor. A normally engaged clutch maintains drive connection between the worm gear and the crankarm to effect normal tailgate opening and closing by the motor and slips to allow manually applied force on the tailgate to open and close same when the motor is not operating.
REFERENCES:
patent: 2719036 (1955-09-01), Brundage
patent: 3332169 (1967-07-01), Lohr et al.
patent: 3333362 (1967-08-01), Kostin et al.
patent: 3422572 (1969-01-01), Pollak
patent: 3713472 (1973-01-01), Dozois
patent: 3716945 (1973-02-01), Cooper et al.
patent: 4134231 (1979-01-01), Daugirdas et al.
DeRees Delbert D.
Kowall David J.
Moore Thomas S.
Chrysler Corporation
Cuomo Peter M.
Dobrowitsky Margaret A.
Redman Jerry
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