Patent ID: 7273977

Claim:
A timpani comprising a timpani frame having a top, a bottom and two engaging slots formed at the bottom of the timpani frame; a driving device located at the bottom of the timpani frame; and a foldable leg assembly mounted on the timpani frame and comprising: two legs connected pivotally to the bottom of the timpani frame, and each leg having a distal end; a wheel rotatably attached rotatably to the distal end of the leg; an inner side; and a stopper assembly having a push rod moveably mounted on the inner side each of the legs and having an engaging end selectively engages with one of the engaging slots in the timpani frame; and a pulling end; a bracket assembly having a sliding bracket attached pivotally to the bottom of the timpani frame opposite to the two legs and having two sides; and two tracks formed respectively through the two sides of the sliding bracket, and each track having two ends; and two engaging notches formed respectively at the two ends of the track; a base bracket attached pivotally to the bottom of the timpani frame opposite to the two legs and having two sides; two inner sides; two adjustable rod holes formed respectively through the two sides of the base bracket and corresponding to each other; and two sliding slots formed respectively in the inner sides of the base bracket; and an adjustable rod extending through the two adjustable rod holes in the base bracket and the two tracks in the sliding bracket and having two ends; two trackers mounted respectively on the ends of the adjustable rod and moveable engaging the sliding slots in the base bracket; two latches mounted respectively on the ends of the adjustable rod, sliding in the tracks in the sliding bracket and selectively engaging the engaging notches in the tracks in the sliding bracket; and a lever attached to one end of the adjusting rod and rotating the adjusting rod and the latches; and a pedal pivotally connected to the driving device of the timpani frame and mount pivotally to the base bracket.