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A simulation environment for the sport of boxing utilizing a robotic machine interface system which carries a person.
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| Number | Title | Issue Date |
| 6580023 | Convertible drumhead An improved drumhead comprising a substantially annular hoop having a generally planar upper member spaced apart from a generally planar lower member, a circumferential inner rim and a circumferential outer rim. Also provided is a film material or membran... | 06/17/2003 |
| 6075190 | Drum holder An apparatus for holding drums comprising a connected series of rotatably interrelated tubular posts, clamps and plates for enabling the versatile repositioning of drums in combination with or apart from a musical drum set. One end of the apparatus connec... | 06/13/2000 |
| 6056302 | Skateboard truck assembly A skateboard truck assembly that includes a skateboard, a mounting plate, which is used to mount the truck assembly to the underside of the board, a mounting bracket to bridge the truck assembly to the mounting plate and an axle assembly, which includes a... | 05/02/2000 |
