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. 19, 1980
Filed:
Sep. 19, 1977
Donald P Massa, Cohasset, MA (US);
James G Hall, Weymouth, MA (US);
The Stoneleigh Trust, Cohasset, MA (US);
Abstract
An intrusion alarm system includes a microcomputer and keyboard for providing control functions for the alarm system with greater reliability and with greatly increased security as compared with prior art systems. The disclosed system provides a positive means for deactivating the alarm system only by authorized personnel by the use of a multi-digit code which must be correctly entered on the keyboard within a prescribed short period of time after entry into the protected zone. Upon entry into the protected zone, the system goes immediately into a preliminary alarm stage which, for example, may be the lighting of a floor lamp in the room. The person entering the premises then has thirty seconds to enter the correct code on the keyboard attached to the front panel of the alarm unit to deactivate the system. If an unauthorized person enters and cannot provide the required code, the system enters the final alarm stage which turns on the automatic dialer to notify the police and also turns on auxiliary sirens, outdoor lights, and any other alarm outputs that may be desired.