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:
Nov. 05, 1991
Filed:
Aug. 23, 1989
Applicant:
Inventors:
Assignee:
Other;
Attorneys:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G01V / ;
U.S. Cl.
CPC ...
250221 ; 2502221 ; 340557 ;
Abstract
A laser security for securing a confined space including means for generating laser ray, means for converting the laser beam into divergent laser plane along a vertical plane, reflection means properly arranged so as to sequentially reflect the laser plane into a formation confining a space, termination means for sensing the reflected laser rays of the laser plane. Whenever any of the laser vertical securing planes is shielded or interrupted by an intruder, said intruder will be detected by the sensor means and further sound warning signals after a identification process.