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WO2003013390A3 - Earplug with stiffener - Google Patents

Earplug with stiffener Download PDF

Info

Publication number
WO2003013390A3
WO2003013390A3 PCT/US2002/025362 US0225362W WO03013390A3 WO 2003013390 A3 WO2003013390 A3 WO 2003013390A3 US 0225362 W US0225362 W US 0225362W WO 03013390 A3 WO03013390 A3 WO 03013390A3
Authority
WO
WIPO (PCT)
Prior art keywords
stiffener
tube
foam material
soft
foam
Prior art date
Application number
PCT/US2002/025362
Other languages
French (fr)
Other versions
WO2003013390A2 (en
Inventor
Jim T Tiemens
Original Assignee
Bacou Dalloz Usa Safety Inc
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 US10/212,284 external-priority patent/US6659103B2/en
Application filed by Bacou Dalloz Usa Safety Inc filed Critical Bacou Dalloz Usa Safety Inc
Priority to AU2002324660A priority Critical patent/AU2002324660A1/en
Priority to EP02759317A priority patent/EP1420736A4/en
Publication of WO2003013390A2 publication Critical patent/WO2003013390A2/en
Publication of WO2003013390A3 publication Critical patent/WO2003013390A3/en

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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C44/00—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles
    • B29C44/02—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles for articles of definite length, i.e. discrete articles
    • B29C44/04—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles for articles of definite length, i.e. discrete articles consisting of at least two parts of chemically or physically different materials, e.g. having different densities
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C44/00—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles
    • B29C44/02—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles for articles of definite length, i.e. discrete articles
    • B29C44/10—Applying counter-pressure during expanding
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
    • B29C48/06—Rod-shaped
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/25—Component parts, details or accessories; Auxiliary operations
    • B29C48/30—Extrusion nozzles or dies
    • B29C48/305—Extrusion nozzles or dies having a wide opening, e.g. for forming sheets
    • B29C48/315—Extrusion nozzles or dies having a wide opening, e.g. for forming sheets with parts oscillating relative to each other
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C37/00—Component parts, details, accessories or auxiliary operations, not covered by group B29C33/00 or B29C35/00
    • B29C37/0053—Moulding articles characterised by the shape of the surface, e.g. ribs, high polish
    • B29C37/0057—Moulding single grooves or ribs, e.g. tear lines
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
    • B29C48/09—Articles with cross-sections having partially or fully enclosed cavities, e.g. pipes or channels
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
    • B29C48/12—Articles with an irregular circumference when viewed in cross-section, e.g. window profiles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
    • B29C48/13—Articles with a cross-section varying in the longitudinal direction, e.g. corrugated pipes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2031/00—Other particular articles
    • B29L2031/753—Medical equipment; Accessories therefor

Landscapes

  • Engineering & Computer Science (AREA)
  • Health & Medical Sciences (AREA)
  • Mechanical Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Otolaryngology (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Acoustics & Sound (AREA)
  • Biophysics (AREA)
  • Manufacturing & Machinery (AREA)
  • Psychology (AREA)
  • Biomedical Technology (AREA)
  • Physics & Mathematics (AREA)
  • Vascular Medicine (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Installation Of Indoor Wiring (AREA)
  • Extrusion Moulding Of Plastics Or The Like (AREA)

Abstract

An earplug (12), includes a body (14), of soft elastomeric material such as a soft resilient foam for insertion in the ear canal, and a stiffener (16), of more rigid material than the body (14). The stiffener (16), is in the form of a tube rather than a solid rod, so while the stiffener is resistant to column-like collapse, it is easily radially compressed to facilitate compression of the body as it enters the ear canal. The stiffener tube can be filled with soft resilient foam material, to block the passage of sound through the tube. The tubular stiffener can have a slot extending parallel to the length of the stiffener, to allow soft foam material to flow into the tube to fill it, as the foam material that surrounds the tube is molded. Such molding can be accomplished by extruding foam material while the tubular stiffener passes with the extruded foam through the extrusion head.
PCT/US2002/025362 2001-08-10 2002-08-08 Earplug with stiffener WO2003013390A2 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
AU2002324660A AU2002324660A1 (en) 2001-08-10 2002-08-08 Earplug with stiffener
EP02759317A EP1420736A4 (en) 2001-08-10 2002-08-08 Earplug with stiffener

Applications Claiming Priority (8)

Application Number Priority Date Filing Date Title
US31144001P 2001-08-10 2001-08-10
US31161001P 2001-08-10 2001-08-10
US31144101P 2001-08-10 2001-08-10
US60/311,440 2001-08-10
US60/311,441 2001-08-10
US60/311,610 2001-08-10
US10/212,284 2002-08-01
US10/212,284 US6659103B2 (en) 2001-08-10 2002-08-01 Earplug with stiffener

Publications (2)

Publication Number Publication Date
WO2003013390A2 WO2003013390A2 (en) 2003-02-20
WO2003013390A3 true WO2003013390A3 (en) 2003-07-10

Family

ID=27498882

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2002/025362 WO2003013390A2 (en) 2001-08-10 2002-08-08 Earplug with stiffener

Country Status (3)

Country Link
EP (1) EP1420736A4 (en)
AU (1) AU2002324660A1 (en)
WO (1) WO2003013390A2 (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU2010207756B2 (en) * 2009-06-03 2012-08-30 Sperian Hearing Protection, Llc Non-roll foam eartip
USD636484S1 (en) 2009-10-22 2011-04-19 Sperian Hearing Protection, Llc Earplug
US20220354698A1 (en) * 2019-09-24 2022-11-10 3M Innovative Properties Company Plastic alloy earplug core

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6006857A (en) * 1998-05-08 1999-12-28 Howard Leight Industries Earplug with insertion stem

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE465891C (en) * 1928-09-26 Louis Santi Two-part earplugs for bathers
US3811437A (en) * 1971-10-26 1974-05-21 Cabot Corp Earplugs
DE2319732A1 (en) * 1973-04-18 1974-10-31 Allen William Prof Mills Self-shaping earplugs - with silicon putty filler
US4434794A (en) * 1981-06-15 1984-03-06 Leight Howard S Disposable ear plug
US4434792A (en) 1982-03-19 1984-03-06 Rosenberg Steven L Adjustable abduction device for treatment of metatarsus adductus
GB8610455D0 (en) * 1986-04-29 1986-06-04 Safer Safety Ltd Ear plugs
US5080110A (en) * 1990-10-09 1992-01-14 Weldon Patrizia M Pacifier ear plugs
US5573015A (en) * 1995-03-28 1996-11-12 Williams; Colin D. Extruded ear plug

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6006857A (en) * 1998-05-08 1999-12-28 Howard Leight Industries Earplug with insertion stem

Also Published As

Publication number Publication date
WO2003013390A2 (en) 2003-02-20
EP1420736A4 (en) 2008-05-28
EP1420736A2 (en) 2004-05-26
AU2002324660A1 (en) 2003-02-24

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