[go: up one dir, main page]

WO2003013390A2 - Bouchon d'oreille avec raidisseur - Google Patents

Bouchon d'oreille avec raidisseur Download PDF

Info

Publication number
WO2003013390A2
WO2003013390A2 PCT/US2002/025362 US0225362W WO03013390A2 WO 2003013390 A2 WO2003013390 A2 WO 2003013390A2 US 0225362 W US0225362 W US 0225362W WO 03013390 A2 WO03013390 A2 WO 03013390A2
Authority
WO
WIPO (PCT)
Prior art keywords
tube
earplug
elastomeric
stiffener
apparatus described
Prior art date
Application number
PCT/US2002/025362
Other languages
English (en)
Other versions
WO2003013390A3 (fr
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/fr
Publication of WO2003013390A2 publication Critical patent/WO2003013390A2/fr
Publication of WO2003013390A3 publication Critical patent/WO2003013390A3/fr

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

Definitions

  • earplug includes a cylinder punched out of a plate of elastomeric polymer foam material, or a bullet-shaped member molded of such polymer foam material. It is difficult to insert the front portion of an ordinary foam earplug into the ear canal, because the rear end of such earplug collapses as it is pushed forward in an attempt to insert the front portion into the ear canal. As a result, such earplugs of foam are commonly formed of slow recovery material which can be rolled between the fingers to a small diameter and inserted into the ear canal and held therein while the front end of the earplug expands during a period of perhaps 30 seconds. If a worker's hands are dirty, then the rolled earplug will pick up dirt, which is a disadvantage of such earplugs.
  • earplug such as shown in Patents 4,434, 792 and 5,573,015, includes a body of resilient foam or very soft solid rubber molded with an axial passage, and a stiffening rod of more rigid material lying in the passage.
  • the stiffening rod resists column-like collapse, and pushes the front end of the body into the ear canal.
  • the stiffening rod has a disadvantage in that it makes the front end of the body stiffer against radial compression so greater force is required to insert the body front end into the ear canal and the earplug is not as comfortable.
  • An earplug that could be constructed at low cost, which could be installed in the ear canal without requiring rolling between the fingers, and which had a front body portion that was easily radially compressed for easy of installation and comfort, would be of value.
  • earplugs are constructed in pairs that are connected by a cord. Such cords are commonly attached to an earplug by forcing an end of a cord into the earplug, with adhesive on the cord end bonded to the earplug. If the earplug is of soft foam, such insertion may be difficult. In practice, the cord is often inserted off center from the earplug axis and sometimes comes out when pulled to take out the earplug. It would be desirable if an earplug were constructed that facilitated reliable and accurately on-axis installation of a cord end in the earplug.
  • an earplug is provided with a body front portion that can be inserted into the ear canal to seal there against, and a stiffener that preferably lies within the body front portion to stiffen the earplug against column-like collapse, wherein the stiffener is easily radially compressed.
  • the stiffener is in the form of a tube, which provides high resistance to column-type collapse, but which can be easily radially compressed.
  • the body of soft elastomeric material is molded and the tubular stiffener may be molded integrally with the body. In most cases, the body is formed of a soft foam material and the inside of the tubular stiffener is filled with soft foam material.
  • Earplugs of the above type can be molded by extrusion of foamable material through a die head.
  • the tubular stiffener can be passed through the middle of the die head opening, to result in an elongated extrusion comprising a tubular stiffener surrounded by soft foam material that is bonded around the outside of the stiffener.
  • the elongated extrusion can be partially separated into individual earplugs by compressing and cutting the foamable material of the body prior to complete foaming and setting, resulting in a chain of connected earplugs.
  • the chain can be stored and later cut into individual earplugs as needed, or the chain can be immediately cut into individual earplugs such as at the time when the foam material is compressed to separate foam material of sequential earplugs.
  • the tubular stiffener lying within soft elastomeric material facilitates the production of specialized earplug pairs that are connected together by a cord.
  • a cord can be inserted into the tubular stiffener of each earplug of the pair and fixed in place as by adhesive.
  • Fig. 1 is a sectional side view of an earplug constructed in accordance with one embodiment of the present invention.
  • Fig. 2 is a sectional view taken on line 2-2 of Fig. 1.
  • Fig.3 is a view of the earplug of Fig. 1 , shown inserted into an ear canal and with the front portion of the earplug radially compressed.
  • Fig. 4 is a sectional view similar to Fig. 2, but of an earplug of another embodiment of the invention, which facilitates its manufacturer.
  • Fig. 5 is a sectional side view of an earplug of another embodiment of the invention, wherein an end of a cord is anchored in the earplug
  • Fig. 6 is a sectional view similar to Fig. 5, of another embodiment of the invention wherein the end of a cord is anchored in the earplug.
  • Fig. 7 is partially sectional side view showing a chain of earplugs and showing a method by which the chain of earplugs is manufactured.
  • Fig. 8 is a view of the pincher taken on line 8-8 of Fig. 7.
  • Fig. 9 is a partially sectional side view of an earplug of the chain of Fig. 7, which has been separated from other earplugs.
  • Figs. 1 -3 illustrate an earplug 12 that includes a body 14 of soft elastomeric material in the form of resilient foam, and a stiffener 16 that extends along the axis 20 of the body and that lies within a body passage 18 extending along the axis of the body.
  • the body has front and rear sections, or portions 22, 24.
  • the front portion 22 is designed to be inserted forwardly F into a person's ear canal, and to be radially (with respect to axis 20) compressed by the walls of the ear canal, so the body front portion forms a sound-tight seal against the walls of the ear canal to protect the wearer from loud sounds.
  • the rear portion 24 is grasped between a person's fingers to push the front portion forwardly F into the ear canal and to pull the ear plug rearwardly R out of the ear canal.
  • the body 14 is formed of a soft foam material such as a low density (e.g. 2 grams/cm 3 ) of TPR. This allows the body front portion to be radially compressed as it is pushed into the ear canal. However, the high resilience of the material which allows it to be easily radially compressed when merely pushed into the ear canal, results in the rear portion 24 of the body having little resistance to columnlike collapse when pushed.
  • the stiffener 16 has at least a radially outer portion formed of material having a much greater stiffness than the resilient foam material of the body 14.
  • the greater stiffness of the stiffener 16 allows a person to press forwardly against the rear end 26 of the earplug or push forwardly while grasping the rear portion 24, with the stiffener 16 resisting column-like collapse.
  • the stiffener extends at least partially in the front portion, and preferably along at least half the length E of the body front portion 22, and is preferably bonded to the body so forward movement of the stiffener results in it dragging the body front portion 22 into the ear canal.
  • the stiffener 16 includes a tube 30 of material more rigid than the soft foam of the body 14.
  • the tube 30 is formed of flexible material that can be easily radially (perpendicular to axis 20) compressed.
  • a string-like part 32 lies within the tube 30 and blocks the passage of sound through the inside of the tube 30.
  • Fig. 3 shows the earplug after the front portion 22A of the earplug 14A, has been inserted into an ear canal C.
  • Such insertion results in radial compression of the body front portion, which results in sealing of the body front portion against the walls of the ear canal to prevent the passage of sound between them and into the ear canal.
  • Such compression of the body front portion at 22A also results in compression of the stiffener tube to the configuration 30A.
  • the soft foam string-like part 32A is also radially compressed.
  • tubular stiffener instead of a solid rod stiffener, has an important advantage in that the tubular stiffener is resiliently compressible.
  • the tubular stiffener is not quite as rigid against column-like collapse as a solid rod of the same material and same outside diameter.
  • a solid rod resists column-like collapse (in which the rod bends when axial compression forces are applied between its ends) primarily as a result of material near the periphery of the rod, and the tubular stiffener is almost as stiff against column-like collapse as a solid rod of the same material and outside diameter.
  • the tube 30 of slightly greater diameter. It is also possible to use slightly stiffer material to achieve the same resistance to column collapse with the same tube outside diameter.
  • An elastomeric material may be defined as one having a Young's modulus of elasticity of no more than 50,000 psi.
  • the body 14 is formed of a resilient foam while the tubular stiffener 30 is preferably formed of an elastomeric material of at least twice the stiffness. It is possible to form the tubular stiffener 30 of a material that is not elastomeric but readily bends, although applicant prefers to use an elastomeric material.
  • the body preferably has a durometer of 1 to 10, shore A.
  • the tube 16 is of solid elastomeric material, such as a soft rubber, which has a durometer of at least 30 shore A.
  • the durometer stiffness of the tube material is preferably at least twice that of the body.
  • the outside and inside surfaces of the tube are bonded respectively to the body 14 and to the center part 30, usually as a result of the foam material foaming and setting while in contact with the tube. An examination of the finished earplug which is cut, shows this.
  • the front portion 22 has an outside diameter A of between about 9 mm and 13 mm, so it is radially compressed when inserted into the ear canals of most people.
  • the tube 16 has an outside diameter B that is preferably between 2 mm and 7 mm.
  • a large diameter tube is desirable to resist column collapse using tube walls of small thickness D for high resilience to radial compression but decreases radial resilience of the earplug.
  • At least about 1 mm of the soft foam material should lie around the tube so such material can be compressed to seal against the walls of the ear canal.
  • the inside diameter of the tube is preferably chosen so the wall thickness D of the tube is no more than about half the radius B/2 of the tube to provide high resilience in radial compression.
  • the earplug of Figs. 1-3 can be formed in several different ways.
  • a basic approach is to first form the stiffener tube 30 and place it in a mold, with foamable liquid also placed in the mold around the tube and in the tube.
  • Fig. 4 shows an earplug 50 similar to that of Figs. 1 -3, but with a stiffener tube 52 that has a gap 54 extending parallel to the axis 56 of the tube along the entire length of the tube.
  • the purpose of the gap 54 is to allow material 60 in the body 62 that surrounds the tube, to flow into the inside of the tube and form the string-like part 64 that lies within the tube.
  • the body 62 and string part 64 are connected by a portion of the material lying in the gap 54.
  • the presence of the gap facilitates molding of the earplug, because it eliminates the need to pour or otherwise separately add soft compressible material to the inside of the tube 52.
  • the gap 54 extend by no more than 90° and preferably by no more than 60° to avoid a side that collapses much more readily than the rest.
  • the gap generally must be at least 10° to allow material to flow into the inside of the tube and equalize the pressure of the foaming material.
  • Fig. 5 illustrates an earplug 70 similar to that of Fig. 1 , but wherein the tube 72 is not filled with resilient foam material or the like. Instead, the tube 72 (preferably without a gap) is left hollow until one end 74 of a cord 76 is inserted into the tube. The inside of the tube and/or the outside of the cord end 74 can be coated with an adhesive which sets and bonds after the cord is inserted. The cord end 74 blocks the passage of sound. An end of the cord 76 opposite the end 74 is similarly installed in a tube of another similar earplug, to provide a corded pair of earplugs.
  • Fig. 6 shows an earplug 90 similar to that df Fig. 5, except that the tube 92 projects only part of the way through the earplug body 100 and is sealed by a plug 104, with material at 102 being left forward of the tube to block sound.
  • a cord end 94 lies in the tube.
  • Fig. 7 shows earplugs of the general type illustrated in Fig. 4, being manufactured by extrusion.
  • a preformed continuous tube 52 with a gap 54 in it is passed through a mass 110 of foamable material which is still in a liquid state, to flow through an opening 112 in an extrusion head 114 along with the foamable material.
  • the foamable material As the foamable material flows out around the stiffener tube 52, the foamable material rapidly generates gas bubbles and expands in diameter to the final diameter D as it foams. It is possible to leave a continuous extrusion with a stiffener tube therein and cut it into individual earplugs each about once inch long.
  • Applicant rounds the ends of the earplugs to form a chain 130 of individual earplugs 134 connected together largely by the tube 52 and the string-like part 64 within the stiffener tube. Applicant accomplishes this by a pair of pinching dies 120, 122 which rapidly pinch the extrusion close to where it emerges from the extrusion opening 112. The pinched locations on the extrusion form rounded ends (for the earplug following the pinch off and the earplug preceding the pinch off). In between earplugs, at 132, the thickness of the body around the tube is less than half the thickness at the middle of each earplug.
  • the chain of earplug can be stored, and individual earplugs removed from the chain by cutting them at the intersection 132 of two earplugs that are connected in series. Fig.9 illustrates one of such earplugs 134A.
  • the invention provides an earplug with an improved stiffener in the form of a tube that extends along the axis of the earplug and that resists columnlike collapse when the rear end of the earplug is pushed forward to insert the front portion into the ear canal.
  • the stiffener tube has a considerable diameter but thin walls, so the tube resists column-like collapse but does not greatly resist radially compression. As a result, the front portion of the earplug body that enters the ear canal and that must be compressed by the ear canal, is more easily compressed.
  • the stiffener tube can be formed with a gap, especially an axially-extending gap, to facilitate forming the earplug by flowing a foamable material around the tube and allowing the foamable material to flow through the gap into the inside of the tube to fill it.
  • the earplug with tube is also useful in the installation of the end of a cord in those devices that include a pair of earplugs connected by a cord. Multiple earplugs can be formed by extrusion, and locations along the extrusion can be pinched to form a string of earplugs with rounded ends that are connected by the tube.

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

L'invention concerne un bouchon d'oreille composé d'un corps en élastomère souple, tel qu'une mousse résiliente, destiné à être inséré dans le conduit auditif, et d'un raidisseur en matériau plus rigide que le corps. En forme de tube et non pas de tige pleine, le raidisseur est à la fois résistant à l'affaissement dans l'axe et aisé à comprimer radialement pour faciliter la compression du corps lors de son introduction dans le conduit auditif. Le tube raidisseur peut être rempli de matériau en mousse résiliente pour bloquer le passage du bruit à travers le tube. Ce raidisseur tubulaire peut comporter une fente s'étendant parallèlement au raidisseur pris dans sa longueur, cette fente servant au remplissage du tube avec de la mousse souple, la mousse entourant le tube étant moulée. Ce moulage peut être réalisé par extrusion de mousse pendant le passage du raidisseur tubulaire avec la mousse à travers une tête d'extrusion.
PCT/US2002/025362 2001-08-10 2002-08-08 Bouchon d'oreille avec raidisseur WO2003013390A2 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
AU2002324660A AU2002324660A1 (en) 2001-08-10 2002-08-08 Earplug with stiffener
EP02759317A EP1420736A4 (fr) 2001-08-10 2002-08-08 Bouchon d'oreille avec raidisseur

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 true WO2003013390A2 (fr) 2003-02-20
WO2003013390A3 WO2003013390A3 (fr) 2003-07-10

Family

ID=27498882

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2002/025362 WO2003013390A2 (fr) 2001-08-10 2002-08-08 Bouchon d'oreille avec raidisseur

Country Status (3)

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

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2010141741A3 (fr) * 2009-06-03 2011-04-28 Sperian Hearing Protection, Llc. Embouts auriculaires en mousse sans rouler
USD654163S1 (en) 2009-10-22 2012-02-14 Honeywell International Inc. Earplug
WO2021059083A1 (fr) * 2019-09-24 2021-04-01 3M Innovative Properties Company Noyau de bouchon d'oreille en alliage de plastique

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4434792A (en) 1982-03-19 1984-03-06 Rosenberg Steven L Adjustable abduction device for treatment of metatarsus adductus
US5573015A (en) 1995-03-28 1996-11-12 Williams; Colin D. Extruded ear plug

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE465891C (de) * 1928-09-26 Louis Santi Zweiteiliger Ohrpfropfen fuer Badende
US3811437A (en) * 1971-10-26 1974-05-21 Cabot Corp Earplugs
DE2319732A1 (de) * 1973-04-18 1974-10-31 Allen William Prof Mills Ohrpfropfen
US4434794A (en) * 1981-06-15 1984-03-06 Leight Howard S Disposable ear plug
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
US6006857A (en) * 1998-05-08 1999-12-28 Howard Leight Industries Earplug with insertion stem

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4434792A (en) 1982-03-19 1984-03-06 Rosenberg Steven L Adjustable abduction device for treatment of metatarsus adductus
US5573015A (en) 1995-03-28 1996-11-12 Williams; Colin D. Extruded ear plug

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See also references of EP1420736A4

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2010141741A3 (fr) * 2009-06-03 2011-04-28 Sperian Hearing Protection, Llc. Embouts auriculaires en mousse sans rouler
US8061472B2 (en) 2009-06-03 2011-11-22 Sperian Hearing Protection, Llc Non-roll foam eartip
CN102596131A (zh) * 2009-06-03 2012-07-18 斯博瑞安听觉保护有限责任公司 非搓式泡沫耳件
CN102596131B (zh) * 2009-06-03 2014-07-09 斯博瑞安听觉保护有限责任公司 非搓式泡沫耳件
USD654163S1 (en) 2009-10-22 2012-02-14 Honeywell International Inc. Earplug
WO2021059083A1 (fr) * 2019-09-24 2021-04-01 3M Innovative Properties Company Noyau de bouchon d'oreille en alliage de plastique
CN114423390A (zh) * 2019-09-24 2022-04-29 3M创新有限公司 塑料合金耳塞芯
CN114423390B (zh) * 2019-09-24 2024-07-26 3M创新有限公司 塑料合金耳塞芯

Also Published As

Publication number Publication date
EP1420736A4 (fr) 2008-05-28
WO2003013390A3 (fr) 2003-07-10
EP1420736A2 (fr) 2004-05-26
AU2002324660A1 (en) 2003-02-24

Similar Documents

Publication Publication Date Title
US6659103B2 (en) Earplug with stiffener
EP1689336B1 (fr) Protecteur auriculaire pouvant attenuer les sons faibles
EP1596790B1 (fr) Bouchon d'oreille conforme
US8061472B2 (en) Non-roll foam eartip
TWI461184B (zh) 安置於耳道中的自調式裝置
US20070119464A1 (en) Enhanced earplug with bendable stiffener
US8101103B2 (en) Earbud and method of manufacture
US5483027A (en) Earplug with form-fitting fluid chambers
EP1829512B1 (fr) Bouchon d'oreille à lamelles
WO2005023147A3 (fr) Bouchon d'oreille renforce par une ame
CN101686875A (zh) 自适应的消音耳塞
WO2003013390A2 (fr) Bouchon d'oreille avec raidisseur
CN114521139B (zh) 推入式耳塞及使用芯轴制造其的方法
CA1321951C (fr) Embout auriculaire compressible

Legal Events

Date Code Title Description
AK Designated states

Kind code of ref document: A2

Designated state(s): AE AG AL AM AT AU AZ BA BB BG BY BZ CA CH CN CO CR CU CZ DE DM DZ EC EE ES FI GB GD GE GH HR HU ID IL IN IS JP KE KG KP KR LC LK LR LS LT LU LV MA MD MG MN MW MX MZ NO NZ OM PH PL PT RU SD SE SG SI SK SL TJ TM TN TR TZ UA UG UZ VC VN YU ZA ZM

Kind code of ref document: A2

Designated state(s): AE AG AL AM AT AU AZ BA BB BG BR BY BZ CA CH CN CO CR CU CZ DE DK DM DZ EC EE ES FI GB GD GE GH GM HR HU ID IL IN IS JP KE KG KP KR KZ LC LK LR LS LT LU LV MA MD MG MK MN MW MX MZ NO NZ OM PH PL PT RO RU SD SE SG SI SK SL TJ TM TN TR TT TZ UA UG UZ VC VN YU ZA ZM ZW

AL Designated countries for regional patents

Kind code of ref document: A2

Designated state(s): GH GM KE LS MW MZ SD SL SZ TZ UG ZM ZW AM AZ BY KG KZ MD RU TJ TM AT BE BG CH CY CZ DE DK EE ES FI FR GB GR IE IT LU MC NL PT SE SK TR BF BJ CF CG CI CM GA GN GQ GW ML MR NE SN TD TG

Kind code of ref document: A2

Designated state(s): GH GM KE LS MW MZ SD SL SZ UG ZM ZW AM AZ BY KG KZ RU TJ TM AT BE BG CH CY CZ DK EE ES FI FR GB GR IE IT LU MC PT SE SK TR BF BJ CF CG CI GA GN GQ GW ML MR NE SN TD TG

121 Ep: the epo has been informed by wipo that ep was designated in this application
DFPE Request for preliminary examination filed prior to expiration of 19th month from priority date (pct application filed before 20040101)
WWE Wipo information: entry into national phase

Ref document number: 2002759317

Country of ref document: EP

WWP Wipo information: published in national office

Ref document number: 2002759317

Country of ref document: EP

REG Reference to national code

Ref country code: DE

Ref legal event code: 8642

NENP Non-entry into the national phase

Ref country code: JP

WWW Wipo information: withdrawn in national office

Country of ref document: JP