Obstruction sensing edge for a bifolding door

Details Obstruction sensing edge for a bifolding door Obstruction sensing edge for a bifolding door

1977-06-08

1979-01-09

Downey, Kenneth

Flexible or portable closure, partition, or panel

Plural and/or with rigid closure

Plural strip, slat, or panel assemblies

160206, 49 28, 200 6143, E06B 348

Patent

active

041333659

ABSTRACT:
An obstruction sensing edge for a bifolding door includes a body secured to the door. The body defines an internal fluid chamber that is in fluid communication with a fluid actuated switch. The switch controls the opening and closing of the door. Defined on the body portion is an edge portion including a leading edge and side portions extending from the leading edge to the body portion. The leading edge and body portion are fabricated of elastomeric material such that upon engagement of the leading edge with an obstruction, the internal chamber is deformed changing the volume thereof and actuating the switch. The edge portion includes elongated fins extending transversely to the sides of the edge portion such that upon complete closing of the door, the fins seal the door.

REFERENCES:
patent: 3260812 (1966-07-01), Miller
patent: 3710050 (1973-01-01), Richards
patent: 3919809 (1975-11-01), Haughton
patent: 4045631 (1977-08-01), Dann

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