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:
Dec. 03, 1985
Filed:
Aug. 18, 1983
Applicant:
Inventors:
John F Masoncup, Mount Prospect, IL (US);
Eric O Peterson, Elgin, IL (US);
Alan G Peterson, Oak Park, IL (US);
Assignee:
Other;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
E05B / ;
U.S. Cl.
CPC ...
340542 ; 70439 ;
Abstract
A padlock contains a battery connected by electrical circuitry and switches to an alarm sounding device which sounds an alarm when someone attempts to force open or sever the lock shackle or when someone attempts to remove the battery in an unauthorized manner. A test signal of momentary duration is automatically sounded each time the lock is opened or closed in an authorized manner, and this indicates whether the alarm system is operative.