Automatic latching mechanism for overhead doors

Details Automatic latching mechanism for overhead doors Automatic latching mechanism for overhead doors

1984-09-04

1986-10-21

Smith, Gary L.

Closure fasteners

Braces

292 64, 292201, 29234117, 292DIG36, 160201, 49199, E05C 1744, E05D 1506

Patent

active

046181776

ABSTRACT:
A latching device for overhead-type doors mounted for movement between a closed position and a raised position with respect to an opening defined by a frame. The latching mechanism includes a pivotable arm having a pivot end and an engagement end. The pivot end of the pivotable arm is mounted above the opening for pivotable movement about a substantially horizontal axis between a first position and a second raised position. The engagement end of the arm is adapted to engage a first latch portion associated with the door when the door is in a closed position and the arm is in the first position, and also adapted to engage a second latch portion associated with the door when the door is in the raised position and the arm is in an intermediate position between the first and second positions. The arrangement of the arm relative to the door is such that the door is prevented by the arm for moving into the raised position from the closed position unless the arm is first moved toward the second position out of engagement with the first latch portion, and also such that the door is prevented by the arm for moving to the closed position from the raised position unless the arm is first moved from the intermediate position towards the second position out of engagement with the second latch portion.

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