CA2234156A1 - Acoustical hearing protective devices utilizing dynamically stiff foam and methods of producing same - Google Patents

Acoustical hearing protective devices utilizing dynamically stiff foam and methods of producing same

Info

Publication number
CA2234156A1
CA2234156A1 CA002234156A CA2234156A CA2234156A1 CA 2234156 A1 CA2234156 A1 CA 2234156A1 CA 002234156 A CA002234156 A CA 002234156A CA 2234156 A CA2234156 A CA 2234156A CA 2234156 A1 CA2234156 A1 CA 2234156A1
Authority
CA
Canada
Prior art keywords
hearing protective
protective devices
methods
hearing
producing same
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.)
Granted
Application number
CA002234156A
Other languages
French (fr)
Other versions
CA2234156C (en
Inventor
Ross Gardner Jr.
Gregory L. Simon
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.)
Cabot Safety Intermediate LLC
Original Assignee
Cabot Safety Intermediate Corporation
Ross Gardner Jr.
Gregory L. Simon
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
Priority claimed from US08/698,404 external-priority patent/US5792998A/en
Application filed by Cabot Safety Intermediate Corporation, Ross Gardner Jr., Gregory L. Simon filed Critical Cabot Safety Intermediate Corporation
Publication of CA2234156A1 publication Critical patent/CA2234156A1/en
Application granted granted Critical
Publication of CA2234156C publication Critical patent/CA2234156C/en
Anticipated expiration legal-status Critical
Expired - Fee Related 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
    • A61F11/10—Protective devices for the ears internal, e.g. earplugs inflatable or expandable
    • 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
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
    • C08G18/00—Polymeric products of isocyanates or isothiocyanates
    • C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
    • C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
    • C08G18/65—Low-molecular-weight compounds having active hydrogen with high-molecular-weight compounds having active hydrogen
    • C08G18/66—Compounds of groups C08G18/42, C08G18/48, or C08G18/52
    • C08G18/6666—Compounds of group C08G18/48 or C08G18/52
    • C08G18/667—Compounds of group C08G18/48 or C08G18/52 with compounds of group C08G18/32 or polyamines of C08G18/38
    • C08G18/6674—Compounds of group C08G18/48 or C08G18/52 with compounds of group C08G18/32 or polyamines of C08G18/38 with compounds of group C08G18/3203
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D175/00—Coating compositions based on polyureas or polyurethanes; Coating compositions based on derivatives of such polymers
    • C09D175/04—Polyurethanes
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
    • C08G2110/00—Foam properties
    • C08G2110/0008—Foam properties flexible
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
    • C08G2110/00—Foam properties
    • C08G2110/0041—Foam properties having specified density
    • C08G2110/0058—≥50 and <150kg/m3
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
    • C08G2110/00—Foam properties
    • C08G2110/0041—Foam properties having specified density
    • C08G2110/0066—≥ 150kg/m3
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
    • C08G2350/00—Acoustic or vibration damping material
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R1/00—Details of transducers, loudspeakers or microphones
    • H04R1/10—Earpieces; Attachments therefor ; Earphones; Monophonic headphones
    • H04R1/1016—Earpieces of the intra-aural type
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R5/00—Stereophonic arrangements
    • H04R5/033—Headphones for stereophonic communication
    • H04R5/0335—Earpiece support, e.g. headbands or neckrests

Landscapes

  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Biomedical Technology (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Physics & Mathematics (AREA)
  • Veterinary Medicine (AREA)
  • Acoustics & Sound (AREA)
  • Biophysics (AREA)
  • Otolaryngology (AREA)
  • Psychology (AREA)
  • Public Health (AREA)
  • Organic Chemistry (AREA)
  • Vascular Medicine (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Materials Engineering (AREA)
  • Wood Science & Technology (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Headphones And Earphones (AREA)
  • Soundproofing, Sound Blocking, And Sound Damping (AREA)

Abstract

An earmuff cushion (22, 24) and other foam hearing protective components such as earplugs and pods for semi-aural hearing protectors (20) and earplugs providing improved attenuation are described.
The cushion (22, 24) and other foam hearing protective components are comprised of a dynamically stiff foam material having a low static stiffness, and a high dynamic stiffness, which produces improved attenua-tion in the earmuff and other hearing protective devices in which it is used. Earmuffs made from the cushion (22, 24), semi-aural hearing protectors, earplugs, and improved method of making the hearing protective devices are also described.
CA002234156A 1996-08-15 1997-08-12 Acoustical hearing protective devices utilizing dynamically stiff foam and methods of producing same Expired - Fee Related CA2234156C (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US08/698,404 US5792998A (en) 1993-04-19 1996-08-15 Acoustical hearing protective devices utilizing dynamically stiff foam and methods of producing same
US08/698,404 1996-08-15
PCT/US1997/013959 WO1998007296A1 (en) 1996-08-15 1997-08-12 Acoustical hearing protective devices utilizing dynamically stiff foam and methods of producing same

Publications (2)

Publication Number Publication Date
CA2234156A1 true CA2234156A1 (en) 1998-02-19
CA2234156C CA2234156C (en) 2007-07-17

Family

ID=38288438

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002234156A Expired - Fee Related CA2234156C (en) 1996-08-15 1997-08-12 Acoustical hearing protective devices utilizing dynamically stiff foam and methods of producing same

Country Status (1)

Country Link
CA (1) CA2234156C (en)

Also Published As

Publication number Publication date
CA2234156C (en) 2007-07-17

Similar Documents

Publication Publication Date Title
ATE181343T1 (en) SOUND-ABSOLUTION EAR COVER
ZA977347B (en) Acoustical hearing protective devices utilizing dynamically stiff foam and methods of producing same.
CA2215515A1 (en) Vibration attenuating member and method of making same
CA2323799A1 (en) Cushioned earphones
CA2282177A1 (en) Earmuff for noise blocking
Casali et al. Technology advancements in hearing protection circa 1995: Active noise reduction, frequency/amplitude-sensitivity, and uniform attenuation
WO2001078576A3 (en) Devices and methods for attenuation of pressure waves in the body
CA2256634A1 (en) Improved footwear
ZA977349B (en) Hearing protective device comprising a foam and a porous component, and method of manufacture thereof.
US7025061B2 (en) Customized passive hearing protection earplug, use of the same and method for manufacturing the same
AU630187B2 (en) External ear canal pressure regulating device and tinnitus suppression device
ES2090292T3 (en) EARPHONE PROTECTIVE CASE FOR EARMUFFS OR TELEPHONE HELMETS.
US4465159A (en) Nonlinear ear protecting device
DE68907239T2 (en) Hearing protectors and methods of making them.
CA2136950A1 (en) Active Plus Selective Headset
CA2234156A1 (en) Acoustical hearing protective devices utilizing dynamically stiff foam and methods of producing same
Zannin et al. Effects of cup, cushion, headband force, and foam lining on the attenuation of an earmuff
NL192601B (en) Hearing protection earplug.
WO2003010993A8 (en) Active-noise-reduction headsets with front-cavity venting
Trinder et al. Active noise control at the ear.
Wheeler et al. On spatial variability in the attenuation performance of active hearing protectors
AU2859499A (en) (streptomyces) sp. producing tautomycetin and immunosuppressant comprising tautomycetin as active ingredient
RU2223612C2 (en) Shock-absorbing coating preventing pain when using earphones
Giguère et al. An acoustic head simulator for hearing protector evaluation. II: Measurements in steady‐state and impulse noise environments
BURGTORF et al. Frequency selected and amplitude limited personal noise protectors[Final Report, Sep. 1980]

Legal Events

Date Code Title Description
EEER Examination request
MKLA Lapsed