Invention Grant
- Patent Title: Acoustic device, and electronic device and image forming apparatus incorporating same
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Application No.: US15158164Application Date: 2016-05-18
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Publication No.: US09653061B2Publication Date: 2017-05-16
- Inventor: Masahiro Ishida , Naoki Matsuda
- Applicant: Masahiro Ishida , Naoki Matsuda
- Applicant Address: JP Tokyo
- Assignee: Ricoh Company, Ltd.
- Current Assignee: Ricoh Company, Ltd.
- Current Assignee Address: JP Tokyo
- Agency: Harness, Dickey & Pierce, P.L.C.
- Priority: JP2014-036268 20140227
- Main IPC: G03G15/00
- IPC: G03G15/00 ; G03G21/16 ; G10K15/04 ; G10K11/00 ; G10K11/172 ; G10K9/02 ; G10K11/04
Abstract:
An acoustic device includes an opening; a flange forming the opening; a first member including the opening and the flange; and a second member joined to the first member, thereby forming a cavity. The second member is formed of a material with a density lower than a material of the first member.
Public/Granted literature
- US20160291530A1 ACOUSTIC DEVICE, AND ELECTRONIC DEVICE AND IMAGE FORMING APPARATUS INCORPORATING SAME Public/Granted day:2016-10-06
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