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US4843371A Expired / Lapsed US ⏱️ 0.0 years remaining

Burglar-alarm system for briefcase

Assignee: Individual
•
Filing: 1988-02-05
•
Granted: 1989-06-27
•
Expires: 2008-02-05
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Abstract

Abstract A burglar-alarm system for a briefcase and in particular to one which will generate high voltage on the surface of the briefcase to force the thief to throw away the briefcase, giving an alarming sound, emitting brilliant flashes of light, evolving colored smokes to arouse attention of the pedestrians and automatically destroying the articles therein so as to prevent the briefcase from being taken away in case of theft or incorrectly dialing the electronic combination lock in the briefcase.

Inventors

  • 👤 Liu C. Kuei
  • 👤 Chen C. Shui
  • 👤 Huang C. Lung

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-25 07:02
CPC Classifications
A; A45; A45C; A45C13/00; A45C13/18; A45C13/24; G; G08; G08B; G08B13/00; G08B13/02; G08B13/14; G08B13/1427; G08B21/00; G08B21/02; G08B21/0202; G08B21/0241; G08B21/0247; G08B21/0286

Claims Analysis

Total Claims: 2
Claim 1
Independent Claim 197 words
A burglar-alarm system for a briefcase comprising a portable wireless transmitter and a control device mounted in the briefcase, said control device being constituted by a wireless receiver, a rechargeable battery, an electronic combination lock, a main controller, a high-voltage generator, an alarm, a smoking circuit, a smoking can, an intense transmitter, a flasher and a destroying device, said rechargeable battery being to provide a power source for all components, said control device having an inspecting portion constituted by the wireless receiver and the electronic combination lock, said wireless receiver being associated with the wireless transmitter to form a distance-measuring device so that when the distance between the wireless receiver and the wireless transmitter exceeds effective range of the wireless receiver, the output of the wireless receiver will be changed which in turn will trigger the main controller, whereby in case of theft or incorrectly dialing the electronic combination lock, the burglar-alarm system will work thereby generating high voltage on the surface of the briefcase to force the thief to throw away the briefcase, giving an alarming sound, emitting brilliant flashes of light, evolving colored smokes to arouse attention of pedestrians and destroying articles in the briefcase.
Claim 2
Dependent Claim 197 words
A burglar-alarm system for a briefcase comprising a portable wireless transmitter and a control device mounted in the briefcase, said control device being constituted by a wireless receiver, a rechargeable battery, an electronic combination lock, a main controller, a high-voltage generator, an alarm, a smoking circuit, a smoking can, an intense transmitter, a flasher and a destroying device, said rechargeable battery being to provide a power source for all components, said control device having an inspecting portion constituted by the wireless receiver and the electronic combination lock, said wireless receiver being associated with the wireless transmitter to form a distance-measuring device so that when the distance between the wireless receiver and the wireless transmitter exceeds effective range of the wireless receiver, the output of the wireless receiver will be changed which in turn will trigger the main controller, whereby in case of theft or incorrectly dialing the electronic combination lock, the burglar-alarm system will work thereby generating high voltage on the surface of the briefcase to force the thief to throw away the briefcase, giving an alarming sound, emitting brilliant flashes of light, evolving colored smokes to arouse attention of pedestrians and destroying articles in the briefcase.

References Cited (Backward Citations)

US4155079A Cited
US4272763A Cited
US4591835A Cited
US4593273A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1992-06-26 1992-12-26 1993-06-27 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1996-06-26 1996-12-26 1997-06-27 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 2000-06-26 2000-12-26 2001-06-27 $7700.00 Window Closed / Lapsed

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