The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Mar. 13, 1990
Filed:
Aug. 21, 1989
Norman K Miller, Concordville, PA (US);
Miller Edge, Inc., Concordville, PA (US);
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.