Resources Contact Us Home
Apparatus for the automatic issuance and return of keys

Image Number 2 for United States Patent #4010868.

A plurality of keys are movably suspended on a support in successive orientation one behind the other. The leading key engages a dispensing device which normally prevents the discharge of the keys from the support but which is actuable on command to selectively release the first or leading key while retaining the remainder of the keys on the support. Secondary rails are provided for separating and diverting keys according to their use.

  Recently Added Patents
Organic light emitting diode light source device
Light source lighting device including a constant-current supply that is connected to a light source and supplies a constant current of a substantially constant magnitude to the light source,
Charged-particle beam lens
Combination therapy to enhance NK cell mediated cytotoxicity
Bioelectric battery for implantable device applications
Methods for non-linear image blending, adjustment and display
Semiconductor memory device, test circuit, and test operation method thereof
  Randomly Featured Patents
Semiconductor over insulator mesa
Method of producing a thin layer of crystalline material
Folding tripod ladder having extendable legs
Clip for ornamentation and method of using same
Digital recording/playback apparatus
Input data sign determining method
Arrangement for cleaning containers of diverse shapes
Electronic stethoscope system and method
Combined barbecue grill and cart
Light receptor device