Invention Grant
- Patent Title: Sound absorbing device, electronic device, and image forming apparatus
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Application No.: US16884508Application Date: 2020-05-27
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Publication No.: US10943575B2Publication Date: 2021-03-09
- Inventor: Masahiro Ishida , Naoki Matsuda
- Applicant: Masahiro Ishida , Naoki Matsuda
- Applicant Address: JP Kanagawa; JP Kanagawa
- Assignee: Masahiro Ishida,Naoki Matsuda
- Current Assignee: Masahiro Ishida,Naoki Matsuda
- Current Assignee Address: JP Kanagawa; JP Kanagawa
- Agency: Harness, Dickey and Pierce, P.L.C.
- Priority: JP2014-092789 20140428,JP2014-155065 20140730,JP2015-080100 20150409
- Main IPC: G03G15/00
- IPC: G03G15/00 ; G10K11/00 ; B41J29/08 ; G03G21/16 ; G10K11/172 ; B41J29/02 ; B41J29/13
Abstract:
A sound absorbing device includes: a plurality of sound absorbing units. A frequency of sound absorbed by at least one of the sound absorbing units overlaps, at least partially, with a frequency of sound with a volume increased by installation of another sound absorbing unit.
Public/Granted literature
- US20200286458A1 SOUND ABSORBING DEVICE, ELECTRONIC DEVICE, AND IMAGE FORMING APPARATUS Public/Granted day:2020-09-10
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