US2538339A - Earplug - Google Patents
Earplug Download PDFInfo
- Publication number
- US2538339A US2538339A US115827A US11582749A US2538339A US 2538339 A US2538339 A US 2538339A US 115827 A US115827 A US 115827A US 11582749 A US11582749 A US 11582749A US 2538339 A US2538339 A US 2538339A
- Authority
- US
- United States
- Prior art keywords
- plug
- core
- auditory canal
- view
- earplug
- 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 - Lifetime
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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
Description
M. J. THOMAS Jan. 16, 1951 EARPLUG Filed Sept. 15, 1949 Inventor Mary 1; 7710mm Patented Jan. 16, 1951 ll) STATS PAT @T FFICE 2 Claims.
This invention relates to improvements in ear plugs, and the principal object of the invention is to protect the auditory canal against discomfort or injury resulting from the presence of water, dust, noise, etc.
This object is achieved by the provision of the instant ear plug which is adapted for insertion into the auditory canal, an important feature of the invention being the formation of the main body portion of the plug from resiliently expansible and contractible material which, by virtue of its resiliency, may be readily inserted into the canal and permitted to contract or expand therein so as to conform accurately to the configuration of the canal and eliminate any possibility of unfilled space through which water, dust, noise, etc. could penetrate.
Another feature of the invention is the flexible core in the resilient mai body portion of the plug, this core being stiffer than the body portion and lending sufficient stiffness to the plug so as to facilitate convenient and expeditious insertion thereof into the auditory canal.
With the above more important objects and features in view and such other objects and features as may become apparent as this specification proceeds, the invention consists essentially in the arrangement and construction of parts as illustrated in the accompanying drawings, in which:
Figure 1 is a fragmentary cross-sectional view of the auditory canal showing the device disposed therein;
Figure 2 is a perspective view of the device, this view being taken from the smaller end;
Figure 3 is a perspective view, similar to that shown in Figure 2, but taken from the larger end;
and
Figure 4 is a longitudinal sectional View, taken substantially in the plane of the line 44 in Figure 3.
Referring now to the accompanying drawings in detail, the invention consists of an ear plug designated generally by the reference character I0, the same embodying in its construction an elongated body ll of a shape similar to a frustum of a cone which is formed from resiliently expansible and contractible material such as sponge rubber, the larger end of this body being substantially fiat as indicated at l4, while its smaller end is provided with a rounded marginal edge 16., am best shown in Figure 4.
An elongated, substantially cylindrical core M of flexible material which is stiff relative to the material of the body i2, is embedded in the body !2, this core preferably consisting of hard rubber and extending from the large end IA of the body to the inner wall 28 of a passage in the body l2, whereby the small end portion of the body is coreless and constitutes a resilient pilot head 22.
When the device is placed in use, the plug is inserted into the auditory canal 24 of the user, small end first, during which action the resilient pilot head 22, together with the outwardly tapered configuration of the body [2, will substantiall facilitate the insertion, while the relatively stiff core [3 will assure that the body I2 is not subjected to excessive lateral bending or distortion. However, once the plug is installed, the resiliently expansible and contractible nature of the soft material from which the body I2 is formed will assure that the plug completely fills every cavity or space of the auditory canal, and will thus assure adequate protection against leakage or penetration of water, noise, dust, etc. into the ear.
Having described the claimed as new is:
1. An ear plug comprising an elongated body in the shape of a frustum of a cone with uninterrupted walls from end to end and formed from resiliently expansible and contractible material, a flexible and solid core embedded in said body, said core extending axially from the larger end to a point spaced from the smaller end of the body, so that the smaller end portion of the body constitutes a coreless pilot head.
2. The combination of claim 1 and said body having a passage therein which opens through the larger end of said body, and said core being disposed in said passage and terminating at its outer end flush with the surface of said larger end.
invention, what is MARY J. THOMAS.
REFERENCES CITED The following references are of record in the file of this patent:
UNITED STATES PATENTS Number Name Date 1,694,952 Santi Dec. 11, 1928 2,446,707 Leight Aug. 10, 1948
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US115827A US2538339A (en) | 1949-09-15 | 1949-09-15 | Earplug |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US115827A US2538339A (en) | 1949-09-15 | 1949-09-15 | Earplug |
Publications (1)
Publication Number | Publication Date |
---|---|
US2538339A true US2538339A (en) | 1951-01-16 |
Family
ID=22363632
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US115827A Expired - Lifetime US2538339A (en) | 1949-09-15 | 1949-09-15 | Earplug |
Country Status (1)
Country | Link |
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US (1) | US2538339A (en) |
Cited By (39)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2804072A (en) * | 1955-03-29 | 1957-08-27 | Genzer Rose | Ear plugs |
FR2158978A5 (en) * | 1971-10-26 | 1973-06-15 | Nat Res Dev | |
DE3217690A1 (en) * | 1981-06-15 | 1982-12-30 | Howard S. 90265 Malibu Calif. Leight | EAR PLUG |
US4579112A (en) * | 1984-05-17 | 1986-04-01 | Scott Robert T | Foam earplug |
US4609194A (en) * | 1984-05-30 | 1986-09-02 | Krent Edward D | Vibration dampening device for sporting rackets |
US4776590A (en) * | 1984-05-30 | 1988-10-11 | Krent Edward D | Vibration dampening device for sporting rackets |
US4830139A (en) * | 1986-08-04 | 1989-05-16 | Cirillo Evelyn J | Hearing aid holding means and method of using same |
US4879158A (en) * | 1986-08-06 | 1989-11-07 | Nagoya Oilchemical Co., Ltd. | Masking member |
US4920985A (en) * | 1984-08-23 | 1990-05-01 | Peltor Ab | Device for closing a curved duct |
DE3929060A1 (en) * | 1989-09-01 | 1991-03-07 | Bobertag Gmbh | HEALTH PROTECTION PLUG |
US5080110A (en) * | 1990-10-09 | 1992-01-14 | Weldon Patrizia M | Pacifier ear plugs |
US5153387A (en) * | 1990-12-31 | 1992-10-06 | Syracuse University | Layered earplug |
US5188123A (en) * | 1990-08-20 | 1993-02-23 | Cabot Safety Corporation | Hearing protective earplug having alternative modes of insertion |
US5452731A (en) * | 1994-10-25 | 1995-09-26 | Dickman; Donald E. | Disposable, hygroscopic ear plug including tear-away portion |
US5573015A (en) * | 1995-03-28 | 1996-11-12 | Williams; Colin D. | Extruded ear plug |
US5799658A (en) * | 1996-08-15 | 1998-09-01 | Cabot Safety Intermediate Corporation | Hearing protective device comprising a foam and a porous component and method of manufacture thereof |
US5811742A (en) * | 1997-04-21 | 1998-09-22 | Howard S. Leight And Associates, Inc. | Dual earplug |
US5957136A (en) * | 1998-10-08 | 1999-09-28 | Moldex-Metric, Inc. | Earplug |
US5988313A (en) * | 1996-12-12 | 1999-11-23 | Dalloz Safety Ab | Earplug |
USD427304S (en) * | 1998-10-08 | 2000-06-27 | Moldex-Metric, Inc | Earplug |
USD434139S (en) * | 1999-09-17 | 2000-11-21 | 3M Innovative Properties Company | Earplug |
US20020124851A1 (en) * | 2000-11-28 | 2002-09-12 | Richard Knauer | Hearing protective device and method of making same |
US6484726B1 (en) | 2000-06-30 | 2002-11-26 | 3M Innovative Properties Company | Articulating earplug |
US6659103B2 (en) * | 2001-08-10 | 2003-12-09 | Bacou-Dalloz Usa Safety, Inc. | Earplug with stiffener |
US6695093B1 (en) | 2000-01-13 | 2004-02-24 | Aearo Company | Earplug |
US20040045558A1 (en) * | 2002-09-06 | 2004-03-11 | Duncan Taylor | Earplug and method of manufacturing an earplug |
US20050056289A1 (en) * | 2003-09-12 | 2005-03-17 | Jenkins John Allen | Earplug with bendable stiffener |
WO2013016336A3 (en) * | 2011-07-28 | 2013-07-11 | Bose Corporation | Earpiece passive noise attenuating |
US8679607B2 (en) | 2012-07-12 | 2014-03-25 | 3M Innovative Properties Company | Foamable article |
US8968613B2 (en) | 2012-07-12 | 2015-03-03 | 3M Innovative Properties Company | Method of making an earplug |
US8989426B2 (en) | 2010-08-16 | 2015-03-24 | Bose Corporation | Earpiece positioning and retaining |
USD760373S1 (en) * | 2015-05-05 | 2016-06-28 | Patricia Bucha | Scented nose plug |
US9462366B2 (en) | 2014-03-27 | 2016-10-04 | Bose Corporation | Earpieces having flexible flaps |
US9549855B2 (en) | 2013-02-15 | 2017-01-24 | 3M Innovative Properties Company | Earplug with tip cavity and methods of manufacturing the same |
US9737439B2 (en) | 2012-07-12 | 2017-08-22 | 3M Innovative Properties Company | Push-in earplug |
WO2017203208A1 (en) * | 2016-05-26 | 2017-11-30 | Flare Audio Technologies Limited | Ear protection device |
USD874442S1 (en) * | 2018-04-17 | 2020-02-04 | Brittany Tamar Evans | Pair of shareable earbuds |
USD901454S1 (en) * | 2019-04-10 | 2020-11-10 | Shure Acquisition Holdings, Inc. | Earphone |
USD975279S1 (en) * | 2022-01-12 | 2023-01-10 | P&D Gustafson Inventions, LLC | Hearing aid insert |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1694952A (en) * | 1927-03-02 | 1928-12-11 | Santi Louis | Ear plug for bathers |
US2446707A (en) * | 1945-03-10 | 1948-08-10 | Leight Charles | Ear plug |
-
1949
- 1949-09-15 US US115827A patent/US2538339A/en not_active Expired - Lifetime
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1694952A (en) * | 1927-03-02 | 1928-12-11 | Santi Louis | Ear plug for bathers |
US2446707A (en) * | 1945-03-10 | 1948-08-10 | Leight Charles | Ear plug |
Cited By (53)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2804072A (en) * | 1955-03-29 | 1957-08-27 | Genzer Rose | Ear plugs |
FR2158978A5 (en) * | 1971-10-26 | 1973-06-15 | Nat Res Dev | |
US3811437A (en) * | 1971-10-26 | 1974-05-21 | Cabot Corp | Earplugs |
USRE29487E (en) * | 1971-10-26 | 1977-12-06 | Cabot Corporation | Earplugs |
DE3217690A1 (en) * | 1981-06-15 | 1982-12-30 | Howard S. 90265 Malibu Calif. Leight | EAR PLUG |
US4579112A (en) * | 1984-05-17 | 1986-04-01 | Scott Robert T | Foam earplug |
US4609194A (en) * | 1984-05-30 | 1986-09-02 | Krent Edward D | Vibration dampening device for sporting rackets |
US4776590A (en) * | 1984-05-30 | 1988-10-11 | Krent Edward D | Vibration dampening device for sporting rackets |
US4920985A (en) * | 1984-08-23 | 1990-05-01 | Peltor Ab | Device for closing a curved duct |
US4830139A (en) * | 1986-08-04 | 1989-05-16 | Cirillo Evelyn J | Hearing aid holding means and method of using same |
US4879158A (en) * | 1986-08-06 | 1989-11-07 | Nagoya Oilchemical Co., Ltd. | Masking member |
DE3929060A1 (en) * | 1989-09-01 | 1991-03-07 | Bobertag Gmbh | HEALTH PROTECTION PLUG |
US5188123A (en) * | 1990-08-20 | 1993-02-23 | Cabot Safety Corporation | Hearing protective earplug having alternative modes of insertion |
US5080110A (en) * | 1990-10-09 | 1992-01-14 | Weldon Patrizia M | Pacifier ear plugs |
US5153387A (en) * | 1990-12-31 | 1992-10-06 | Syracuse University | Layered earplug |
US5452731A (en) * | 1994-10-25 | 1995-09-26 | Dickman; Donald E. | Disposable, hygroscopic ear plug including tear-away portion |
US5573015A (en) * | 1995-03-28 | 1996-11-12 | Williams; Colin D. | Extruded ear plug |
US5799658A (en) * | 1996-08-15 | 1998-09-01 | Cabot Safety Intermediate Corporation | Hearing protective device comprising a foam and a porous component and method of manufacture thereof |
US5988313A (en) * | 1996-12-12 | 1999-11-23 | Dalloz Safety Ab | Earplug |
US5811742A (en) * | 1997-04-21 | 1998-09-22 | Howard S. Leight And Associates, Inc. | Dual earplug |
US5957136A (en) * | 1998-10-08 | 1999-09-28 | Moldex-Metric, Inc. | Earplug |
USD427304S (en) * | 1998-10-08 | 2000-06-27 | Moldex-Metric, Inc | Earplug |
USD434139S (en) * | 1999-09-17 | 2000-11-21 | 3M Innovative Properties Company | Earplug |
US6695093B1 (en) | 2000-01-13 | 2004-02-24 | Aearo Company | Earplug |
US6484726B1 (en) | 2000-06-30 | 2002-11-26 | 3M Innovative Properties Company | Articulating earplug |
US20020124851A1 (en) * | 2000-11-28 | 2002-09-12 | Richard Knauer | Hearing protective device and method of making same |
US20060138691A1 (en) * | 2000-11-28 | 2006-06-29 | Richard Knauer | Hearing protective device and method of making the same |
US7731487B2 (en) | 2000-11-28 | 2010-06-08 | 3M Innovative Properties Company | Mold for forming a hearing protective device |
US7727433B2 (en) | 2000-11-28 | 2010-06-01 | 3M Innovative Properties Company | Hearing protective device and method of making the same |
US20060141083A1 (en) * | 2000-11-28 | 2006-06-29 | Richard Knauer | Hearing protective device and method of making the same |
US6659103B2 (en) * | 2001-08-10 | 2003-12-09 | Bacou-Dalloz Usa Safety, Inc. | Earplug with stiffener |
US20040045558A1 (en) * | 2002-09-06 | 2004-03-11 | Duncan Taylor | Earplug and method of manufacturing an earplug |
US20050056289A1 (en) * | 2003-09-12 | 2005-03-17 | Jenkins John Allen | Earplug with bendable stiffener |
US7192544B2 (en) | 2003-09-12 | 2007-03-20 | Howard Leight Industries, Llc | Earplug with molded-in stiffener |
US8989426B2 (en) | 2010-08-16 | 2015-03-24 | Bose Corporation | Earpiece positioning and retaining |
WO2013016336A3 (en) * | 2011-07-28 | 2013-07-11 | Bose Corporation | Earpiece passive noise attenuating |
EP3852386A1 (en) | 2011-07-28 | 2021-07-21 | Bose Corporation | Eartip for an in-ear earpiece |
US8737669B2 (en) | 2011-07-28 | 2014-05-27 | Bose Corporation | Earpiece passive noise attenuating |
US10441471B2 (en) | 2012-07-12 | 2019-10-15 | 3M Innovative Properties Company | Push-in earplug |
US8968613B2 (en) | 2012-07-12 | 2015-03-03 | 3M Innovative Properties Company | Method of making an earplug |
US11123902B2 (en) | 2012-07-12 | 2021-09-21 | 3M Innovative Properties Company | Method of making a personal protective article |
US8679607B2 (en) | 2012-07-12 | 2014-03-25 | 3M Innovative Properties Company | Foamable article |
US9737439B2 (en) | 2012-07-12 | 2017-08-22 | 3M Innovative Properties Company | Push-in earplug |
US10966867B2 (en) | 2012-07-12 | 2021-04-06 | 3M Innovative Properties Company | Push-in earplug |
US10065344B2 (en) | 2012-07-12 | 2018-09-04 | 3M Innovative Properties Company | Method of making a personal protective article |
US10398602B2 (en) | 2013-02-15 | 2019-09-03 | 3M Innovative Properties Company | Earplug with tip cavity and methods of manufacturing the same |
US9549855B2 (en) | 2013-02-15 | 2017-01-24 | 3M Innovative Properties Company | Earplug with tip cavity and methods of manufacturing the same |
US9462366B2 (en) | 2014-03-27 | 2016-10-04 | Bose Corporation | Earpieces having flexible flaps |
USD760373S1 (en) * | 2015-05-05 | 2016-06-28 | Patricia Bucha | Scented nose plug |
WO2017203208A1 (en) * | 2016-05-26 | 2017-11-30 | Flare Audio Technologies Limited | Ear protection device |
USD874442S1 (en) * | 2018-04-17 | 2020-02-04 | Brittany Tamar Evans | Pair of shareable earbuds |
USD901454S1 (en) * | 2019-04-10 | 2020-11-10 | Shure Acquisition Holdings, Inc. | Earphone |
USD975279S1 (en) * | 2022-01-12 | 2023-01-10 | P&D Gustafson Inventions, LLC | Hearing aid insert |
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