JPS621494B2 - - Google Patents

Info

Publication number
JPS621494B2
JPS621494B2 JP56124039A JP12403981A JPS621494B2 JP S621494 B2 JPS621494 B2 JP S621494B2 JP 56124039 A JP56124039 A JP 56124039A JP 12403981 A JP12403981 A JP 12403981A JP S621494 B2 JPS621494 B2 JP S621494B2
Authority
JP
Japan
Prior art keywords
ventilation
cylindrical body
passage
ventilation hole
meandering
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
JP56124039A
Other languages
English (en)
Japanese (ja)
Other versions
JPS57142432A (en
Inventor
Hiromitsu Naka
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
NAKA GIJUTSU KENKYUSHO
Original Assignee
NAKA GIJUTSU KENKYUSHO
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by NAKA GIJUTSU KENKYUSHO filed Critical NAKA GIJUTSU KENKYUSHO
Priority to JP56124039A priority Critical patent/JPS57142432A/ja
Publication of JPS57142432A publication Critical patent/JPS57142432A/ja
Publication of JPS621494B2 publication Critical patent/JPS621494B2/ja
Granted legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
    • F24F13/24—Means for preventing or suppressing noise

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Specific Sealing Or Ventilating Devices For Doors And Windows (AREA)
  • Ventilation (AREA)
  • Soundproofing, Sound Blocking, And Sound Damping (AREA)
JP56124039A 1981-08-10 1981-08-10 Sound-shielding cylinder for use in vent-port Granted JPS57142432A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP56124039A JPS57142432A (en) 1981-08-10 1981-08-10 Sound-shielding cylinder for use in vent-port

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP56124039A JPS57142432A (en) 1981-08-10 1981-08-10 Sound-shielding cylinder for use in vent-port

Related Parent Applications (1)

Application Number Title Priority Date Filing Date
JP11728976A Division JPS5343939A (en) 1976-10-01 1976-10-01 Muffling cylinder for ventilating hole

Publications (2)

Publication Number Publication Date
JPS57142432A JPS57142432A (en) 1982-09-03
JPS621494B2 true JPS621494B2 (enrdf_load_html_response) 1987-01-13

Family

ID=14875499

Family Applications (1)

Application Number Title Priority Date Filing Date
JP56124039A Granted JPS57142432A (en) 1981-08-10 1981-08-10 Sound-shielding cylinder for use in vent-port

Country Status (1)

Country Link
JP (1) JPS57142432A (enrdf_load_html_response)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4963976B2 (ja) * 2007-01-26 2012-06-27 ヤマハ発動機株式会社 樹脂ブロックベルトを有するベルト式無段変速機を備えた鞍乗型車両
US20150101883A1 (en) * 2013-10-10 2015-04-16 Yonghui Xu Sound attenuation module and oversized grill
JP6691521B2 (ja) * 2017-09-21 2020-04-28 富士フイルム株式会社 消音システム
BE1030595B1 (nl) * 2022-06-07 2024-01-15 Wilms N V Wanddoorvoer

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5241723Y2 (enrdf_load_html_response) * 1972-12-25 1977-09-21
JPS5237474Y2 (enrdf_load_html_response) * 1973-09-04 1977-08-26

Also Published As

Publication number Publication date
JPS57142432A (en) 1982-09-03

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