Class Information
Number: 473/519
Name: Games using tangible projectile > Player held and powered, nonmechanical projector, per se, for projecting aerial projectile by striking; part thereof or accessory therefor > With user shiftable, adjustable, or interchangeable weight for use during play or with freely shiftable mass for increasing impact force
Description: Subject matter (a) comprising at least one weight element which is attached, or is intended to be attached, to the projecting implement during play, which weight element is further adapted and intended to be either (1) moved or released for movement to a different location on the implement by a user of the implement, either before or during use of the implement, so as to change the overall balance of the implement during use thereof, or (2) added to or substituted for another similar weight element by a user of the implement, either before or during use of the implement, so as to change the overall weight or balance of the implement during use thereof, or (b) comprising a body of material which is movable from one location on or in the implement to a second location on or in the implement as the implement is moved by a user to strike a projectile so that the implement will impart a greater impetus to the projectile when it is struck.
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7553239 |
Sports training and conditioning device |
Jun. 30, 2009 |
| 7201679 |
Sectional vibration damping, flexible bat |
Apr. 10, 2007 |
| 7198581 |
Training bat system |
Apr. 3, 2007 |
| 7070524 |
Weighted hockey stick |
Jul. 4, 2006 |
| 6767299 |
Wood baseball bat |
Jul. 27, 2004 |
| 6692386 |
Training sports club and method |
Feb. 17, 2004 |
| 6682447 |
Training bat system |
Jan. 27, 2004 |
| 6623383 |
Racquet with slidable weight |
Sep. 23, 2003 |
| 6599201 |
Weight training apparatus |
Jul. 29, 2003 |
| 6575854 |
Automatic adjusting device for adjusting the position of the center of gravity of an object |
Jun. 10, 2003 |
| 6569042 |
Sports swing development device |
May. 27, 2003 |
| 6461259 |
Table tennis bat with adjusting gravity mechanism |
Oct. 8, 2002 |
| 6432004 |
Tennis training device |
Aug. 13, 2002 |
| 6280353 |
Training baseball bat and method |
Aug. 28, 2001 |
| 6254502 |
Weighting system for sports balls and hitting implements |
Jul. 3, 2001 |
| 6159115 |
Handle structure for a racket |
Dec. 12, 2000 |
| 6022281 |
Baseball bat and practice device combination |
Feb. 8, 2000 |
| 5993325 |
Flexible swing weight |
Nov. 30, 1999 |
| 5944622 |
Strung racquet training weight system |
Aug. 31, 1999 |
| 5779571 |
Ball-game racket, in particular a tennis racket |
Jul. 14, 1998 |
| 5772541 |
Vibration dampened hand-held implements |
Jun. 30, 1998 |
| 5772540 |
Racket for tennis or the like games |
Jun. 30, 1998 |
| 5741193 |
Baseball bat and practice device combination |
Apr. 21, 1998 |
| 5452889 |
Ball striking device |
Sep. 26, 1995 |
| 5380002 |
Variable-weight play pieces |
Jan. 10, 1995 |
| 5236197 |
Weight adjustable shock and vibration absorbing tennis racket |
Aug. 17, 1993 |
| 5188360 |
Structure of racket with improved weight distribution adjusting mechanism |
Feb. 23, 1993 |
| 5171011 |
Handle with a pneumatic surface capable of being deformed |
Dec. 15, 1992 |
| 5102132 |
Protective assembly for tennis rackets |
Apr. 7, 1992 |
| 5100136 |
Structure of racket |
Mar. 31, 1992 |
| 5071123 |
Toy implements for storing and striking play balls |
Dec. 10, 1991 |
| 5054780 |
Weight adjustable tennis racquet |
Oct. 8, 1991 |
| 5039097 |
Snap-on weight for a tennis racket |
Aug. 13, 1991 |
| 4984793 |
Racket handle cap |
Jan. 15, 1991 |
| 4984792 |
Weighted tennis/racquetball racket |
Jan. 15, 1991 |
| 4936586 |
Racket handle |
Jun. 26, 1990 |
| 4858928 |
Racket frame |
Aug. 22, 1989 |
| 4732384 |
Racquet having centralized sweet spot |
Mar. 22, 1988 |
| 4720105 |
Weight and balance adjusting assembly for racquets |
Jan. 19, 1988 |
| 4697811 |
Racket and weight attachment |
Oct. 6, 1987 |
| 4693474 |
Games racket |
Sep. 15, 1987 |
| 4690406 |
Variable balance racket |
Sep. 1, 1987 |
| 4685675 |
Adjustably weighted racquet |
Aug. 11, 1987 |
| 4674746 |
Golf club |
Jun. 23, 1987 |
| 4427195 |
Tennis racket with variable balance and weight |
Jan. 24, 1984 |
| 4355803 |
Tennis racquet with variable center of gravity and balance |
Oct. 26, 1982 |
| 4325549 |
Tennis racket with selectively movable weight |
Apr. 20, 1982 |
| 4179121 |
Tennis racket with adjustable weight |
Dec. 18, 1979 |
| 4027881 |
Tennis racket with variable balance and weight |
Jun. 7, 1977 |
| 3975018 |
Racket construction |
Aug. 17, 1976 |
|
