US3778844A - Apparatus for preventing whistling at hearing openings in helmets - Google Patents

Apparatus for preventing whistling at hearing openings in helmets Download PDF

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Publication number
US3778844A
US3778844A US00256916A US3778844DA US3778844A US 3778844 A US3778844 A US 3778844A US 00256916 A US00256916 A US 00256916A US 3778844D A US3778844D A US 3778844DA US 3778844 A US3778844 A US 3778844A
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United States
Prior art keywords
openings
helmet
hearing
tab portions
shell
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
Application number
US00256916A
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English (en)
Inventor
M Hori
T Yamamoto
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.)
Honda Motor Co Ltd
Original Assignee
Honda Motor Co 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 Honda Motor Co Ltd filed Critical Honda Motor Co Ltd
Application granted granted Critical
Publication of US3778844A publication Critical patent/US3778844A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • A—HUMAN NECESSITIES
    • A42—HEADWEAR
    • A42B—HATS; HEAD COVERINGS
    • A42B3/00—Helmets; Helmet covers ; Other protective head coverings
    • A42B3/04—Parts, details or accessories of helmets
    • A42B3/16—Ear protection devices
    • A42B3/163—Wind or noise deflectors

Definitions

  • a helmet including a tab portion in which there are two hearing openings or ear holes. These ear holes are surrounded at least in part by an inclined surface which is located on the exterior of the helmet.
  • the inclined surfaces are each of conical form. According to one embodiment, the inclined surfaces completely encircle the associated ear holes. According to another embodiment of the invention, the inclined surfaces merely extend forwardly and rearwardly of the ear holes.
  • Each side of the helmet may be provided with a plurality of ear holes and related surfaces. Each ear hole is covered internally with a thin porous film, which is covered by a fabric.
  • a helmet which comprises at least one portion provided with an ear hole surrounded at least in part by an inclined surface.
  • the inclined surface is located on the exterior of the helmet. This surface is of conical form. It may completely encircle the ear hole with which it is associated, or it may extend forwardly and rearwardly of such ear hole.
  • the helmet may be provided with a plurality of ear holes, each having related surfaces as in accordance with the above.
  • each ear hole may be internally covered with a thin porous film which may, according to still a further feature of the invention, comprise a fabric covering.
  • FIG. 1 is an elevational side view of a helmet according to this invention
  • FIG. 2 is a fragmentary sectional side view taken along line Illl in FIG. 1,
  • FIG. 3 is a sectional side view of a porous thin film portion thereof.
  • FIG. 4 is a diagram illustrating air flow on the outside of-a hearing opening thereof.
  • a whistling sound may be generated at the hearing opening 3.
  • the invention is characterized in that sound opening 3 made through a tab portion 2 on each side of main helmet body 1 is provided with an outwardly spread inclined surface 4 of nearly conical form along the entire periphery or at least partially in the front and read directions of the outer edge portion thereof.
  • a porous thin film 5 for example, a thin film comprising a spongy rubber piece 6 and a nylon fabric 7 which is pasted thereon is itself pasted on the inner surface of the sound opening 3 to close the same.
  • a hearing piece 8 in the form of a piece of rubber or the like in which is provided hearing openings and the whole periphery or outer edge of the opening is made to have inclined surfaces of nearly conical form.
  • Piece 8 is adhered or attached to the corresponding tab 2 so as to be integral therewith.
  • the formation of the conical form or inclination becomes earier than in the case where such working is applied directly to the main helmet body 1.
  • Section 9 is a foamed styrol material affixed to the inner surface of the main helmet body 1 and the tab portion 2.
  • Elements 10 are cushions of rubber or the like and element 11 is a vinyl sheet mounted on the interior of the shell formed by helmet body 1 and tab portions 2.
  • the illustrated helmet is of the type wherein the main helmet body 1 and the tab portion 2 are integrally formed but the invention is applicable also to a helmet of the type wherein the tab portion is divided from the main helmet body 1.
  • the outside edge 4 of the hearing opening 3 is arranged to have a nearly conical inclination, when a person wearing the helmet moves along on a vehicle, there is prevented the generation of an eddy flow of air as occurs in the case of conventional helmets having a sharp edge at that portion. Instead, a gentle air flow is generated as is shown in FIG. 4.
  • the hearing opening 3 is closed at its inner surface by the thin porous film 5, the inside air canot be drawn out by a negative pressure. Thus, a whistling sound can be prevented at that portion.
  • the thin porous film 5 is effective for excluding the entry of any external dust.
  • a helmet comprising a main body, tab portions integral with and depending from said body and forming therewith a relatively hard and integral shell having an exterior and interior, each tab portion being provided with a plurality ofjuxtaposed openings, hearing pieces of resilient material each having a plurality of juxtaposed openings, the hearing pieces being mounted on the exterior of the tab portions with the openings in the hearing pieces aligned with the openings in the tab portions, the hearing pieces being further provided with conical openings flaring outwardly from respective of the first said openings in the hearing pieces, relatively thin porous films on the interior sides of the tab portions covering the openings in the latter, and an element on the interior ofthe shell, said films being sandwiched between the shell and said element.

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  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Helmets And Other Head Coverings (AREA)
US00256916A 1971-05-31 1972-05-25 Apparatus for preventing whistling at hearing openings in helmets Expired - Lifetime US3778844A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1971044224U JPS504416Y2 (enrdf_load_stackoverflow) 1971-05-31 1971-05-31

Publications (1)

Publication Number Publication Date
US3778844A true US3778844A (en) 1973-12-18

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Family Applications (1)

Application Number Title Priority Date Filing Date
US00256916A Expired - Lifetime US3778844A (en) 1971-05-31 1972-05-25 Apparatus for preventing whistling at hearing openings in helmets

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US (1) US3778844A (enrdf_load_stackoverflow)
JP (1) JPS504416Y2 (enrdf_load_stackoverflow)

Cited By (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1986003950A1 (en) * 1985-01-09 1986-07-17 Gianromano Boretti Protective headgear, particularly for sports activities
US5101517A (en) * 1990-07-06 1992-04-07 Willie Douglas Sports helmet with transparent windows in the side walls
WO1997010732A1 (en) * 1995-09-20 1997-03-27 Protector Development Protector hearing helmet
US6073272A (en) * 1998-01-07 2000-06-13 Red Corp. Helmet with ear protection and a hearing enhancement feature
USD443730S1 (en) 2000-12-06 2001-06-12 Asics Corp. Wrestling ear guard
USD443729S1 (en) 2000-12-06 2001-06-12 Asics Corporation Wrestling ear guard
USD443955S1 (en) 2000-12-06 2001-06-19 Asics Corporation Wrestling ear guard
USD444270S1 (en) 2000-12-06 2001-06-26 Asics Corp. Wrestling ear guard
US20090300827A1 (en) * 2005-12-30 2009-12-10 Ken Mizuno Device reducing wind noise
USD628748S1 (en) 2009-05-13 2010-12-07 Mark Allen Stewart Helmet
US20110209265A1 (en) * 2008-09-17 2011-09-01 Japan Gore-Tex Inc. Waterproof Sound-Permeable Hood
USD665154S1 (en) * 2011-09-12 2012-08-14 Richards Antoine D Cap
US8474064B2 (en) 2011-04-15 2013-07-02 Sam Neverson Hardy, III Ear hole cover for headgear
US20150216250A1 (en) * 2012-08-24 2015-08-06 Koken Ltd. Protective garment
WO2016079606A1 (en) * 2014-11-19 2016-05-26 GORLE, Prem Kumar Motorcycle helmet with inbuilt air filtration system
US20160242487A1 (en) * 2015-02-25 2016-08-25 Joey LaRocque Vented soft-sided helmet

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1714275A (en) * 1926-11-01 1929-05-21 Spalding & Bros Ag Head guard
US2140630A (en) * 1935-08-08 1938-12-20 Illguth Gustav Helmet
US2898596A (en) * 1958-02-27 1959-08-11 Clifford P Keen Wrestling helmet
US3205508A (en) * 1963-12-02 1965-09-14 Wilma W Cox Safety helmet liner and assembly
US3500475A (en) * 1967-03-01 1970-03-17 Honda Gijutsu Kenkyusho Kk Protective helmet

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1714275A (en) * 1926-11-01 1929-05-21 Spalding & Bros Ag Head guard
US2140630A (en) * 1935-08-08 1938-12-20 Illguth Gustav Helmet
US2898596A (en) * 1958-02-27 1959-08-11 Clifford P Keen Wrestling helmet
US3205508A (en) * 1963-12-02 1965-09-14 Wilma W Cox Safety helmet liner and assembly
US3500475A (en) * 1967-03-01 1970-03-17 Honda Gijutsu Kenkyusho Kk Protective helmet

Cited By (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1986003950A1 (en) * 1985-01-09 1986-07-17 Gianromano Boretti Protective headgear, particularly for sports activities
US5101517A (en) * 1990-07-06 1992-04-07 Willie Douglas Sports helmet with transparent windows in the side walls
WO1997010732A1 (en) * 1995-09-20 1997-03-27 Protector Development Protector hearing helmet
US5632048A (en) * 1995-09-20 1997-05-27 Protector Development Protector hearing helmet
US6073272A (en) * 1998-01-07 2000-06-13 Red Corp. Helmet with ear protection and a hearing enhancement feature
USD444270S1 (en) 2000-12-06 2001-06-26 Asics Corp. Wrestling ear guard
USD443729S1 (en) 2000-12-06 2001-06-12 Asics Corporation Wrestling ear guard
USD443955S1 (en) 2000-12-06 2001-06-19 Asics Corporation Wrestling ear guard
USD443730S1 (en) 2000-12-06 2001-06-12 Asics Corp. Wrestling ear guard
US20090300827A1 (en) * 2005-12-30 2009-12-10 Ken Mizuno Device reducing wind noise
US20110209265A1 (en) * 2008-09-17 2011-09-01 Japan Gore-Tex Inc. Waterproof Sound-Permeable Hood
USD628748S1 (en) 2009-05-13 2010-12-07 Mark Allen Stewart Helmet
US8474064B2 (en) 2011-04-15 2013-07-02 Sam Neverson Hardy, III Ear hole cover for headgear
USD665154S1 (en) * 2011-09-12 2012-08-14 Richards Antoine D Cap
US20150216250A1 (en) * 2012-08-24 2015-08-06 Koken Ltd. Protective garment
WO2016079606A1 (en) * 2014-11-19 2016-05-26 GORLE, Prem Kumar Motorcycle helmet with inbuilt air filtration system
US20160242487A1 (en) * 2015-02-25 2016-08-25 Joey LaRocque Vented soft-sided helmet
US11154108B2 (en) * 2015-02-25 2021-10-26 Joey LaRocque Vented soft-sided helmet

Also Published As

Publication number Publication date
JPS504416Y2 (enrdf_load_stackoverflow) 1975-02-06
JPS485928U (enrdf_load_stackoverflow) 1973-01-23

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