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Class Information
Number: 473/461
Name: Games using tangible projectile > Playing field or court game; game element or accessory therefor other than projector or projectile, per se > Practice or training device > For game using field or court having dividing means thereon for separating opponents (e.g., for tennis, volleyball, table tennis, etc.) > Racket or paddle swing analyzer or guide
Description: Practice or training device comprising either (a) a means, separate from a racket or paddle-type projecting implement, for detecting and displaying to a user at least one aspect of racket or paddle movement or position when it is swung in a manner similar to the manner in which it should ideally be swung in an attempt to hit a projectile during play of the game, or (b) a means to constrain a racket or paddle-type projecting implement, when it is swung in practice, to follow the same path it should ideally follow when it is swung during play of the game.
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7559859 |
Tennis training aid |
Jul. 14, 2009 |
| 7445570 |
Tennis training aid |
Nov. 4, 2008 |
| 7350786 |
Rotatable games |
Apr. 1, 2008 |
| 7335118 |
Shock absorbing and sound producing device for tennis racket |
Feb. 26, 2008 |
| 7147581 |
Tennis stroke training device |
Dec. 12, 2006 |
| 6830520 |
Adjustable embedded bat speed indicator |
Dec. 14, 2004 |
| 6648780 |
Tennis training device |
Nov. 18, 2003 |
| 6645094 |
Tennis stroke training apparatus |
Nov. 11, 2003 |
| 6461255 |
Powertube |
Oct. 8, 2002 |
| 6270434 |
Game racket to show the state of the body of an exerciser |
Aug. 7, 2001 |
| 6270430 |
Sports trainer |
Aug. 7, 2001 |
| 6134965 |
Device for measuring at least one physical parameter relating to a propelled game ball |
Oct. 24, 2000 |
| 6102809 |
Athletic stroke training device |
Aug. 15, 2000 |
| 6056653 |
Tennis exercise device |
May. 2, 2000 |
| 5846086 |
System for human trajectory learning in virtual environments |
Dec. 8, 1998 |
| 5796005 |
Flex meter for sports game implements |
Aug. 18, 1998 |
| 5700205 |
Sports training system |
Dec. 23, 1997 |
| 5618040 |
Tennis aid |
Apr. 8, 1997 |
| 5554033 |
System for human trajectory learning in virtual environments |
Sep. 10, 1996 |
| 5542676 |
Biosensor feedback device for sporting implements |
Aug. 6, 1996 |
| 5520049 |
Acceleration responsive device |
May. 28, 1996 |
| 5439214 |
Stroke training device |
Aug. 8, 1995 |
| 5340102 |
Racket attachment whistle |
Aug. 23, 1994 |
| 5257779 |
Stroke training device |
Nov. 2, 1993 |
| 5080362 |
Adjustable point of impact indicating device |
Jan. 14, 1992 |
| 5060942 |
Stroke training device |
Oct. 29, 1991 |
| 4911441 |
Apparatus for controlling moves of a ball-hitting instrument in ball games |
Mar. 27, 1990 |
| 4852875 |
Racquet swing training apparatus |
Aug. 1, 1989 |
| 4519608 |
Tennis racket stroke training device |
May. 28, 1985 |
| 4163552 |
Apparatus for facilitating the practicing of tennis and like games |
Aug. 7, 1979 |
| 4105204 |
Tennis stroke practice device |
Aug. 8, 1978 |
| 4094504 |
Signalling device to be used with a sport implement for detecting and indicating the proper or improper use thereof |
Jun. 13, 1978 |
| 3937465 |
Tennis stroke training device |
Feb. 10, 1976 |
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