JPS6125779Y2 - - Google Patents

Info

Publication number
JPS6125779Y2
JPS6125779Y2 JP1979184423U JP18442379U JPS6125779Y2 JP S6125779 Y2 JPS6125779 Y2 JP S6125779Y2 JP 1979184423 U JP1979184423 U JP 1979184423U JP 18442379 U JP18442379 U JP 18442379U JP S6125779 Y2 JPS6125779 Y2 JP S6125779Y2
Authority
JP
Japan
Prior art keywords
sound
air layer
sounds
noise
thickness
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
JP1979184423U
Other languages
English (en)
Japanese (ja)
Other versions
JPS5698214U (en]
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 filed Critical
Priority to JP1979184423U priority Critical patent/JPS6125779Y2/ja
Publication of JPS5698214U publication Critical patent/JPS5698214U/ja
Application granted granted Critical
Publication of JPS6125779Y2 publication Critical patent/JPS6125779Y2/ja
Expired legal-status Critical Current

Links

Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F11/00—Methods or devices for treatment of the ears or hearing sense; Non-electric hearing aids; Methods or devices for enabling ear patients to achieve auditory perception through physiological senses other than hearing sense; Protective devices for the ears, carried on the body or in the hand
    • A61F11/06—Protective devices for the ears
    • A61F11/14—Protective devices for the ears external, e.g. earcaps or earmuffs
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F11/00—Methods or devices for treatment of the ears or hearing sense; Non-electric hearing aids; Methods or devices for enabling ear patients to achieve auditory perception through physiological senses other than hearing sense; Protective devices for the ears, carried on the body or in the hand
    • A61F11/06—Protective devices for the ears
    • A61F11/08—Protective devices for the ears internal, e.g. earplugs

Landscapes

  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Biomedical Technology (AREA)
  • Acoustics & Sound (AREA)
  • Biophysics (AREA)
  • Otolaryngology (AREA)
  • Psychology (AREA)
  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Vascular Medicine (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Soundproofing, Sound Blocking, And Sound Damping (AREA)
JP1979184423U 1979-12-27 1979-12-27 Expired JPS6125779Y2 (en])

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1979184423U JPS6125779Y2 (en]) 1979-12-27 1979-12-27

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1979184423U JPS6125779Y2 (en]) 1979-12-27 1979-12-27

Publications (2)

Publication Number Publication Date
JPS5698214U JPS5698214U (en]) 1981-08-04
JPS6125779Y2 true JPS6125779Y2 (en]) 1986-08-04

Family

ID=29694642

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1979184423U Expired JPS6125779Y2 (en]) 1979-12-27 1979-12-27

Country Status (1)

Country Link
JP (1) JPS6125779Y2 (en])

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4807612A (en) * 1987-11-09 1989-02-28 Industrial Research Products, Inc. Passive ear protector
JP6251855B2 (ja) * 2014-08-21 2017-12-27 合資会社加藤製作所 吸音型透過音式耳栓
JP2023101441A (ja) * 2022-01-08 2023-07-21 合資会社加藤製作所 吸音型透過音式耳栓ｉｉ

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS472794U (en]) * 1971-01-29 1972-08-31
SE406152B (sv) * 1976-03-18 1979-01-29 Gullfiber Ab Horselskyddspropp

Also Published As

Publication number Publication date
JPS5698214U (en]) 1981-08-04

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