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:
Feb. 01, 1977
Filed:
Jan. 31, 1975
Applicant:
Inventor:
Michael Pappas, Irvington, NJ (US);
Assignee:
Detex Corporation, New York, NY (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G08B / ;
U.S. Cl.
CPC ...
3402 / ; 70 92 ; 70432 ; 292 92 ;
Abstract
A lock system controls exiting and entering of personnel, particularly in public and commercial structures by means of an alarm and a panic bar and key system to operate a lock through a series of interlocking controls including an internal panic bar, an internal key lock, an external key lock and a supplemental manual control. Four modes of operation are provided in which the panic bar is at all times operative and the alarm is selectively operative to provide, in addition to panic bar actuation or in combination therewith, authorized passage, authorized exit only, free passage in both directions and free exit only.