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:
Aug. 17, 1982
Filed:
Jun. 16, 1980
Applicant:
Inventor:
Roy E Van Der Linden, New Windsor, MD (US);
Assignee:
Reliable Security Systems, Inc., Cockeysville, MD (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
E05C / ;
U.S. Cl.
CPC ...
292201 ;
Abstract
An emergency exit door lock equipped with a delay is provided with exterior unlatching and unlocking arrangements which permit a door normally locked with respect to the outside to have a bolt which is undogged and retracted from the outside. Upon undogging the bolt from the outside, the delay is deactivated by de-energizing a solenoid which controls application of the delay.