Encased overhead door operator having threadably attached mounts
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Dec 4, 2001
Grant Date -
N/A
app pub date -
Dec 17, 1999
filing date -
Dec 17, 1999
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A door support and drive mechanism for a door can be mounted either over or in a door opening in a transit vehicle or other structure. The mechanism includes a tube which has a longitudinal slot. The mechanism also has mounts attached to the tube for mounting the mechanism to the structure over the door opening, so that the tube is substantially horizontal and the slot is along a lower portion of the tube. The mechanism includes at least one door hanger which has an upper portion movably disposed within the tube and a depending portion passing through the slot, the depending portion being for attachment to the door. The mechanism has a drive nut attached to the door hanger. A drive screw is positioned in the tube, engaging a threaded inner portion of the drive nut. The drive screw is connectable to a rotary power device to be rotated thereby. Rotation of the drive screw causes longitudinal movement of the drive nut and the hanger to which the drive nut is attached, so that the door is moved longitudinally.
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