| CPC G10D 13/065 (2013.01) [G10D 13/20 (2020.02); G10D 13/28 (2020.02); G10D 13/03 (2020.02); G10D 13/26 (2020.02)] | 20 Claims |

|
1. A drum assembly comprising:
a circular frame member that defines a frame opening therein,
an upper drum head member secured to the frame member and spanning the frame opening,
a lower drum head member positioned below the upper drum head member, secured to the frame member and spanning the frame opening, and
a threaded rod assembly extending between the upper drum head member and the lower drum head member, wherein the threaded rod assembly includes an upper threaded member that is threadingly engaged with the upper drum head member, and wherein rotation of the upper threaded member in a predetermined direction moves the upper drum head member away from the lower drum head member, whereby tension is increased in the upper drum head member.
|