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:
Nov. 09, 1999
Filed:
Aug. 26, 1998
Shinji Matsudaira, Higashiosaka, JP;
Hitoshi Kihara, Sanda, JP;
Sanyo Electric Co., Ltd., Osaka, JP;
Sanyo Electronics Components Co., Ltd., Osaka, JP;
Abstract
A nullification device of the invention comprises a nullifying signal generator 15 for producing a nullifying signal, and a controller 14 for measuring a predetermined period of time and on/off-controlling a mode change switch 16 provided between the signal generator 15 and a transmitting antenna 18. On the other hand, an activation device comprises a generator 23 for producing an activating signal for the nullification device. The activation device and the nullification device have connection terminals a, b and a', b', respectively, where the devices are in contact with each other, with the nullification device placed in a accommodating recess in the activation device. The controller 14 turns on the switch 16 in response to the activating signal, starts to measure time upon cessation of supply of the activating signal, and turns off the switch 16 upon lapse of the specified time period, whereby the nullification device for forcibly ceasing the generation of an alarm by an alarm unit is prevented from being used wrongfully.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile