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:
Oct. 16, 2001
Filed:
Oct. 18, 1999
Shinji Matsudaira, Daito, JP;
Sanyo Electronics Co., LTD, Osaka, JP;
Abstract
This invention provides an antitheft system comprising an antitheft gate,installed in the vicinity of an exit of a store, and an alarm unit,attached to a commodity. The gate,has incorporated therein a signal generator,for producing a notifying signal, and an alarm device,capable of producing an alarm. The alarm unit,comprises an electronic buzzer,a receiving antenna,for receiving the notifying signal from the signal generator,of the gate,and a control circuit,for operating the buzzer,upon the antenna,receiving the notifying signal. The alarm device,of the gate,comprises an alarm producing circuit,capable of producing an alarm, a receiving antenna,for receiving electromagnetic waves generated by the buzzer,by operating the buzzer,and a control circuit,for operating the alarm producing circuit,upon the antenna,receiving the electromagnetic waves. The construction described renders the alarm unit,compact.