公开(公告)号：US20220172697A1

公开(公告)日：2022-06-02

申请号：US17431000

申请日：2019-02-15

Applicant: Hyuk Jae PARK

Inventor： Hyuk Jae PARK

IPC: G10D13/22 ,  G10D13/24 ,  G10D13/02

Abstract: A drum having modified tone qualities is provided. The drum has a generally cylindrical inner shell positioned within a generally cylindrical outer shell. The inner shell has at least one sound-transmitting aperture defined therethrough so that the sound-transmitting aperture provides an unobstructed passageway for sound waves to pass through to reach the outer shell. In some aspects, an insert for modifying the tone qualities of a drum is provided. In some aspects, the outer shell has one or more inwardly extending protrusions co-located with and extending through the at least one sound transmitting aperture.

公开(公告)号：US20220128386A1

公开(公告)日：2022-04-28

申请号：US17081770

申请日：2020-10-27

Applicant: Hyuk Jae PARK

Inventor： Hyuk Jae PARK

IPC: G01D13/02 ,  G01D13/22

Abstract: A drum shell for enhancing the sound and tone qualities of a drum is provided. The drum shell has an outer band, an inner band, and an aerated core interposed therebetween. In one aspect, the core defines a plurality of spaces each providing a sound tube for vibrating air contained within the spaces.