GB2075849B - Improvements in or relating to hearing protectors - Google Patents

Improvements in or relating to hearing protectors

Info

Publication number
GB2075849B
GB2075849B GB8113586A GB8113586A GB2075849B GB 2075849 B GB2075849 B GB 2075849B GB 8113586 A GB8113586 A GB 8113586A GB 8113586 A GB8113586 A GB 8113586A GB 2075849 B GB2075849 B GB 2075849B
Authority
GB
United Kingdom
Prior art keywords
relating
hearing protectors
protectors
hearing
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
GB8113586A
Other versions
GB2075849A (en
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.)
Racal Acoustics Ltd
Original Assignee
Racal Acoustics Ltd
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 Racal Acoustics Ltd filed Critical Racal Acoustics Ltd
Priority to GB8113586A priority Critical patent/GB2075849B/en
Publication of GB2075849A publication Critical patent/GB2075849A/en
Application granted granted Critical
Publication of GB2075849B publication Critical patent/GB2075849B/en
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
    • A61F11/08—Protective devices for the ears internal, e.g. earplugs
    • 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

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)
  • Prostheses (AREA)
GB8113586A 1980-05-14 1981-05-01 Improvements in or relating to hearing protectors Expired GB2075849B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB8113586A GB2075849B (en) 1980-05-14 1981-05-01 Improvements in or relating to hearing protectors

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB8015953 1980-05-14
GB8113586A GB2075849B (en) 1980-05-14 1981-05-01 Improvements in or relating to hearing protectors

Publications (2)

Publication Number Publication Date
GB2075849A GB2075849A (en) 1981-11-25
GB2075849B true GB2075849B (en) 1984-03-28

Family

ID=26275513

Family Applications (1)

Application Number Title Priority Date Filing Date
GB8113586A Expired GB2075849B (en) 1980-05-14 1981-05-01 Improvements in or relating to hearing protectors

Country Status (1)

Country Link
GB (1) GB2075849B (en)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5148887A (en) * 1991-04-01 1992-09-22 Gentex Corporation Earcup assembly incorporating mechanical active noise reduction
US5631965A (en) * 1992-06-19 1997-05-20 Chang; Joseph S. Hearing protector
NL1011877C2 (en) * 1999-04-23 2000-10-24 Groeneveld Elcea B V Sound attenuation filter, hearing protector and method for manufacturing a membrane for a sound attenuation filter.
SE527853C2 (en) * 2000-04-06 2006-06-20 Bacou Dalloz Ab Noise-canceling earplug, diaphragm elements located in the earplug's passage, ways of manufacturing said earplug and ways of affecting the progression of the earplug's suppression curve
US8651229B2 (en) * 2012-06-05 2014-02-18 Honeywell International Inc. Hearing protection
WO2017169133A1 (en) * 2016-03-29 2017-10-05 富士フイルム株式会社 Earmuff
EP3494940A1 (en) * 2017-12-08 2019-06-12 3M Innovative Properties Company A hearing protector having a unidirectional sound inlet

Also Published As

Publication number Publication date
GB2075849A (en) 1981-11-25

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Legal Events

Date Code Title Description
PCNP Patent ceased through non-payment of renewal fee