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
Register files for a digital signal processor operating in an interleaved multi-threaded environment
System and method for customized prompting
Drug comprising as the active ingredient proliferative vector containing survivin promoter
Systems and methods for redox flow battery scalable modular reactant storage
Medical device arm
Rewriting branch instructions using branch stubs
Process for preparing MDA via the stage of the aminal
  Randomly Featured Patents
Silicon-on-insulator vertical array device trench capacitor DRAM
Phrase-composing device featuring interlocking collars and gaps exposing content areas on a common shaft
Modular conveyor mat
Wide band and low driving voltage optical modulator with an improved dielectric buffer layer
System, method and apparatus for organizing groups of self-configurable mobile robotic agents in a multi-robotic system
Process for reducing mono-functional and non-functional by-products during aralkylation of phenolics
Operational amplifier circuit
Mold registration apparatus
Under-pillow-block load cell
Centrifugally cast tube of spheroidal graphite cast-iron and its method of manufacture