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:
Jun. 20, 1995
Filed:
Apr. 29, 1993
Bearge D Miller, Concordville, PA (US);
Anatoly Galperin, Philadelphia, PA (US);
Miller Edge, Concordville, PA (US);
Abstract
A sensing edge for controlling movement of a door by actuation of a device upon an external force being applied to the sensing edge. The sensing edge includes an elongated, generally flexible tubular sheath which is secured to the door. The sheath includes an elongated, entirely hollow cavity with an optically reflective interior surface. A light transmitter is positioned proximate a first end of the sheath for transmitting a light beam toward a second end of the sheath. A light detector is positioned proximate the second end of the sheath for detecting the presence or absence of the light beam at the second sheath end. The light detector generates a signal for actuating the device upon detecting the absence of the light beam at the second end of the sheath.