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
Lamp
Systems and methods for mitigating self-induced far-end crosstalk
Pergola system
Lamp chimney
Semiconductor film, method for manufacturing the same, and power storage device
Sliding tool for insertion of a locking strip into a channel for sealing the edge of a film
Lateral diffusion metal oxide semiconductor transistor structure
  Randomly Featured Patents
Method for grading water-absorbent polymer particles
Memory chip having a test mode and method for checking memory cells of a repaired memory chip
Structure of folding collapsible step exerciser
On-line monitoring of controllers in an environment control network
Circuit for and method of controlling output buffer memory
Span clamp assembly
Data compression system and methods
Rate controlled fluid delivery in dental applications
Fuel injection control arrangement for internal combustion engine with abnormality detection function therein
Output gain stage for a power amplifier