US 11,984,099 B2
Drum head and attachment method of cushion
Takuma Saka, Shizuoka (JP); and Kenji Sakamoto, Shizuoka (JP)
Assigned to Roland Corporation, Shizuoka (JP)
Filed by Roland Corporation, Shizuoka (JP)
Filed on Dec. 2, 2020, as Appl. No. 17/109,148.
Claims priority of application No. 2019-234965 (JP), filed on Dec. 25, 2019.
Prior Publication US 2021/0201860 A1, Jul. 1, 2021
Int. Cl. G10D 13/14 (2020.01); G10D 13/02 (2020.01); G10D 13/20 (2020.01)
CPC G10D 13/14 (2020.02) [G10D 13/02 (2013.01); G10D 13/20 (2020.02)] 19 Claims
OG exemplary drawing
 
1. A drum comprising:
a diaphragm comprising a first through hole;
an outer cushion that is joined to the diaphragm and has a predetermined cushioning property;
an inner cushion that is interposed between the outer cushion and the diaphragm and has a predetermined cushioning property; and
a plurality of joints that join the outer cushion to the diaphragm in a state in which the inner cushion is pressed against the diaphragm by the outer cushion, wherein the joints are configured to surround the inner cushion;
an attachment comprising a sensor for detecting vibration on the diaphragm is attached to the diaphragm through the first through hole of the diaphragm, wherein the joints are disposed on a surface of the diaphragm and on a surface of the outer cushion, and the joints are disposed between the outer cushion and the diaphragm, and
a pedal configured to strike the diaphragm with a beater configured to rotate in response to a depression of the pedal,
wherein the inner cushion is provided on a side opposite to the attachment with a center of the diaphragm interposed between the attachment and the inner cushion, and
wherein the attachment is disposed at a position eccentric above a center of the diaphragm.