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:
May. 14, 1996
Filed:
Feb. 06, 1995
Gary E Lavelle, Avon, CT (US);
George Frolov, Farmington, CT (US);
George A Baehr, Bristol, CT (US);
Harrow Products, Inc., Grand Rapids, MI (US);
Abstract
An exit bar has an elongated body for mounting on an exit door. The exit bar incorporates a pair of independent sensors. An infrared beam is generated along the front of the bar. An infrared detector produces a first signal when the beam is interrupted. The first signal results in release of a lock securing the door. If the beam is interrupted for longer than a pre-set time limit, a first alarm sounds. A capacitance sensor produces a second signal when the sensor detects changes of capacitance in the bar as a result of contact or near contact with foreign objects. The second signal also results in release of the lock securing the door. If the capacitance sensor detects a capacitance change for longer than a pre-set time limit, a second alarm sounds.