Sensing edge having a pressure sensitive switch for a door

Details Sensing edge having a pressure sensitive switch for a door Sensing edge having a pressure sensitive switch for a door

1989-08-21

1990-03-13

Scott, J. R.

Electricity: circuit makers and breakers

Special application

Feeler moves into detecting contact with object

H01H 316, E05F 1500

Patent

active

049084836

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.

REFERENCES:
patent: 4785143 (1988-11-01), Miller

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