Sliding door actuating mechanism

Details Sliding door actuating mechanism Sliding door actuating mechanism

1981-06-05

1983-09-27

Jillions, John M.

Winding, tensioning, or guiding

Coil holder or support

Spool or core

242107, 254294, 254364, B65H 7500

Patent

active

044064209

ABSTRACT:
A winch for use with a van door opening system having separate opening and closing cables includes a two-section drum mounted on a common, motor-driven shaft. A helical spring is interposed between each drum section and the shaft, for compensating for differential extension of the opening and closing cables and for maintaining tension in the opening and closing cables. A driver is affixed to the shaft, and cooperates with a stop on the interior surface of each drum section, for providing a positive driving force for opening the door, and for closing the door. In operation, rotation of the shaft stores energy in the appropriate spring before the driver contacts a stop to provide a positive driving force, so that cable tension will be maintained when the motor-driven shaft is de-energized.

REFERENCES:
patent: 316718 (1885-04-01), Albro
patent: 1062723 (1913-05-01), Miller
patent: 1276191 (1918-08-01), Dittman et al.
patent: 2358096 (1944-09-01), Peterson
patent: 2582987 (1952-01-01), Hagenbook
patent: 2700531 (1955-01-01), Patterson
patent: 3453778 (1969-07-01), Daugirdas
patent: 3652124 (1972-03-01), Tronville
patent: 3728819 (1973-04-01), Goldbach et al.
patent: 3814213 (1974-06-01), Balass

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