US 12,317,042 B2
Sub cone and loudspeaker
Yoshitaka Kawashima, Shiga (JP); Yuki Ishii, Kanagawa (JP); and Yuuki Izumi, Osaka (JP)
Assigned to PANASONIC AUTOMOTIVE SYSTEMS CO., LTD., Kanagawa (JP)
Filed by Panasonic Intellectual Property Management Co., Ltd., Osaka (JP)
Filed on Apr. 12, 2023, as Appl. No. 18/133,772.
Claims priority of application No. 2022-072190 (JP), filed on Apr. 26, 2022.
Prior Publication US 2023/0345179 A1, Oct. 26, 2023
Int. Cl. H04R 1/12 (2006.01); H04R 7/12 (2006.01); H04R 9/02 (2006.01); H04R 9/06 (2006.01)
CPC H04R 7/122 (2013.01) [H04R 9/025 (2013.01); H04R 9/06 (2013.01)] 7 Claims
OG exemplary drawing
 
1. A sub cone for use in a loudspeaker, the sub cone comprising:
a slanted portion that has an aperture area that increases toward an emission direction in which sound is emitted from the loudspeaker; and
a rim portion that is annular in shape and extends linearly outward from an edge of a distal end of the slanted portion, in a direction orthogonal to the emission direction.