Resources Contact Us Home
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
Method and system for testing indirect bandgap semiconductor devices using luminescence imaging
Signal apparatus for facilitating safe backup of vehicles
System and method for converting biomass to ethanol via syngas
Method of modified facies proportions upon history matching of a geological model
Quantitative oxygen imaging systems and methods using echo-based single point imaging
Computer system for routing package deliveries
Integrated transmit/receive switch
  Randomly Featured Patents
Countermeasure system and method for vehicle passive entry system
Zoom lens, imaging apparatus and method for manufacturing zoom lens
Hydraulic tensioner with a molded valve base and cap
Height-adjustable table
Method for preparation of ceftiofur sodium from its hydrohalide salts
Apparatus for sampling hazardous materials
Diagnostic devices for use in the assaying of biological fluids
Data vaulting in emergency shutdown
Solvent casting process
Free-flow conveyor chain