Resources Contact Us Home
Vending apparatus and method having improved reliability

Image Number 9 for United States Patent #5586684.

A vending apparatus of the type having drop shelves, wherein the shelves are retained in an upright position by a solenoid, and wherein, when so positioned, the solenoid forms a series electrical circuit with the shelf, such that the position of the shelf can be tested by testing the integrity of this series electrical circuit. The vending apparatus can be equipped with an acoustic input, such that upon receiving a particular acoustic input signal, the machine will automatically test the position of the shelves by testing the shelf/solenoid circuit, and in this way, an inventory of the contents of the vending machine can be performed.

  Recently Added Patents
Detachably integrated battery charger for mobile cell phones and like devices
Masking method and apparatus
Pressure-sensitive adhesive composition having an improved release behavior
RF/optical shared aperture for high availability wideband communication RF/FSO links
Method and apparatus for filter-less class D audio amplifier EMI reduction
Method and apparatus for interactive distribution of digital content
Liquid crystal display
  Randomly Featured Patents
Liquid crystal display device
Positive photoresist with a solvent mixture of propylene glycol alkyl ether and propylene glycol alkyl ether acetate
Music synchronization arrangement
Resin pulley
Information recording medium, information recording apparatus, and information reproducing apparatus
Method of bioassaying yokukansan
Belt buckle
Method and device for the detection and identification of objects, secure containers and systems which are provided with said device, and objects adapted for same
Bus holders having wide input and output voltage ranges and tolerant input/output buffers using the same
Fuel injection system