Importance

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Abstract

A sensing edge for a door comprised of a pressure sensitive switch. The sensing edge protects persons, equipment and the door from impact damage. The sensing edge includes an outer sheath which is compressible upon application of external pressure. An elongate inner tubular member fabricated of resiliently compressible air impervious material is longitudinally positioned and enclosed within the sheath. A pressure sensitive switch is operatively associated with the inner tubular member. Upon application of external pressure to the sheath, pressure within the tube is increased and thereby communicated to the pressure switch for actuation of the switch to effect a desired result. A substantially rigid transverse structure within a portion of the outer sheath proximate the pressure switch prevents damage to the pressure switch.

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First Claim