Resources Contact Us Home
Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
Table tennis ball delivery device










Image Number 4 for United States Patent #7213724.

A table tennis ball delivery device adapted to be secured to or adjacent the side of a table tennis table for directing a ball to a player upon the activation of a switch by the player. The device includes a chamber for carrying a supply of table tennis balls, a ball transfer mechanism for selectively advancing an individual ball from the chamber to a location over a flexed or cocked delivery spring oriented such that upon activation of the switch by a player, the spring is released so as to strike a ball and launch the ball to the player. The ball transfer mechanism is coordinated with the spring cocking and release mechanism so as to position another ball over the delivery spring and re-cock the spring immediately upon the launching of the ball to the player.








 
 
  Recently Added Patents
Projection type image display
Tire tread
Spindle motor and disk drive apparatus
Dynamic priority queuing
Method and apparatus for providing picture privacy in video
Controllable digital solid state cluster thrusters for rocket propulsion and gas generation
Enhanced channel detection
  Randomly Featured Patents
Automatic contact lens applicator
Homogenous catalyst and processes for fluid phase alkylation
Method for providing information regarding service linking between terrestrial and satellite DMB systems and method for switching services by using service linking information in DMB terminal
Clutch operational control apparatus
Repair plug assembly for vessel having a corrosion resistant lining
Method and tool for removing tubes from multi-tube finned heat exchange coil
Methods and compositions for diagnosing or monitoring autoimmune and chronic inflammatory diseases
Surgical stapler with firing lock mechanism
Image forming apparatus
Fluorescent lamp with cavity tube