Resources Contact Us Home
Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
Appliance anti-theft and protection circuitry










Image Number 2 for United States Patent #4284983.

New and unique circuitry suitable for being located in electrical appliances, and which protects such appliances from theft and unauthorized movement. More particularly, the invention discloses circuitry for providing an alarm when the appliance is both disconnected and moved. The circuitry monitors both power input and movement of the appliance, and provides a pulsating signal suitable for sounding and audible alarm until the appliance is either reconnected or the alarm interrupted by a key switch. According to one particular embodiment, a mercury interrupter is uniquely arranged to operate as both the motion sensor and the oscillator for providing pulsating power to the audible alarm.








 
 
  Recently Added Patents
Method of forming a semiconductor package
Notification systems and methods that consider traffic flow predicament data
Isothermal amplification of DNA
Case for a tablet computer
Method for production of fermentable sugars from biomass
Antibodies to CCR2
Link establishment in a wireless communication environment
  Randomly Featured Patents
Friction stirred introduction of particles into a metallic substrate for surface durability treatment
Aqueous antifungal vaginal douche
Process for the predictable dyeing of keratinous fibers comprising applying at least one composition comprising at least one diamino-N, N-dihydropyrazolone derivative and at least one composit
Lancet injector
Flexible hose and method of manufacture
Bicycle with assist engine
Front face of a vehicle wheel
Verbal computer terminal system
Atomic layer deposition using organometallic complex with .beta.-diketone ligand
Fluid dynamic bearing device