US3898700A - Ear protecting device for safety caps - Google Patents

Ear protecting device for safety caps Download PDF

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Publication number
US3898700A
US3898700A US483409A US48340974A US3898700A US 3898700 A US3898700 A US 3898700A US 483409 A US483409 A US 483409A US 48340974 A US48340974 A US 48340974A US 3898700 A US3898700 A US 3898700A
Authority
US
United States
Prior art keywords
arm
ear
protecting device
flange
band
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
US483409A
Other languages
English (en)
Inventor
Ellison L Davison
Leo D Ziegler
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.)
MSA Safety Inc
Original Assignee
Mine Safety Appliances Co
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 Mine Safety Appliances Co filed Critical Mine Safety Appliances Co
Priority to US483409A priority Critical patent/US3898700A/en
Priority to GB3402576A priority patent/GB1468638A/en
Priority to GB1304975A priority patent/GB1468637A/en
Priority to ZA00752080A priority patent/ZA752080B/xx
Priority to CA225,714A priority patent/CA1035901A/en
Priority to DE2520038A priority patent/DE2520038C3/de
Priority to BR3699/75A priority patent/BR7502909A/pt
Priority to IT24700/75A priority patent/IT1039352B/it
Priority to SE7507314A priority patent/SE407663B/sv
Application granted granted Critical
Publication of US3898700A publication Critical patent/US3898700A/en
Priority to CA295,155A priority patent/CA1036751A/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
    • A42B3/166—Integral hearing protection

Definitions

  • a band that is adapted to surround the crown of a safety cap carries a pair of brackets at its opposite sides, which are provided with downwardly extending hooks to hook under the edge of the cap.
  • Each of the brackets has an opening through it above the band, with the axis of the opening extending radially of the band.
  • a cylindrical flange Projecting outwardly from the bracket around its opening is a cylindrical flange that extends through a hole in one end of a spring arm that carries an ear cover at its opposite end.
  • a lug projects radially from the outer end of the flange and overlaps the arm to hold it on the flange, but the wall of the hole through the arm has a notch in it to enable the arm to be slipped off the flange after the arm has been rotated to align the notch with the lug.
  • Bolts may be inserted in the bracket openings and provided with nuts on their outer ends for clamping a face shield against the outer ends of the bracket flanges.
  • FIG. 1 is a front view
  • FIG. 2 is a side view
  • FIG. 3 is a fragmentary plan view
  • FIG. 4 is an enlarged fragmentary vertical section
  • FIG. 5 is a vertical section taken on the line VV of FIG. 4.
  • a relatively stiff but somewhat flexible band extends around the lower portion of the crown of a safety cap 1.
  • This band may be composed of a strip 2 of plastic, the ends of which are connected by resilient tube 3 cemented to them.
  • the tube can be stretched lengthwise as the band is pressed down over the cap crown so that the band will snugly engage the cap for most of its circumference.
  • brackets 5 are slidably mounted on the band.
  • the opposite sides of the central portion of each bracket are provided with slots 6, through which the band extends.
  • the outer surface of the band at its opposite sides is provided with a number of laterally spaced vertical ribs 7, between which a pair of similar ribs 8 on the inner surface of the bracket normally project as shown in dotted lines in FIG. 5.
  • each bracket Integral with each bracket is a hook 9 that extends downwardly and hooks under the edge of the narrow side brim of the safety cap to prevent the band from riding up on the cap.
  • Each bracket 5 also extends up above the band and is provided above it with an opening 10 (FIGS. 4 and 5), the axis of which extends substantially radially of the band. Encircling the outer end of this opening and integral with the bracket is a cylindrical flange 11.
  • a bolt 12 extends through the passage formed by opening 10 and the flange. The head of the bolt engages the inner surface of the bracket and the bolt projects from the outer end of the flange as shown in FIG. 4.
  • the two bolts extend through holes in the opposite sides of a face shield 13 that is held on the bolts by nuts 14 screwed onto the outer ends of the bolts.
  • the nuts press elastic washers 15 against the outer surface of the shield to clamp the shield between these washers and the outer ends of flanges 11. The pressure of the washers against the shield can be adjusted by the nuts so that the shield will remain in any position to which it may be tilted.
  • protective ear covers also can be supported by brackets 5.
  • brackets 5 Accordingly, the upper ends of a pair of elongated supporting members or spring arms 17 are provided with holes through which the bracket flanges 11 extend. The arms can be rotated on the flanges between downwardly extending positions and positions above the brim of the cap.
  • the thickness of the upper portion of each arm is less than the length of the flange on which it is mounted, and the outer end portion of the flange is provided with a radial lug 18 that overlies and engages the outer surface of the arm so that the latter is normally located between the lug and the body of the bracket and thereby locked in place by the lug.
  • the wall of the hole through the spring arm is provided with a radial notch 19. This notch is located at the top of the hole while the arm is extending downwardly below the cap.
  • each arm 17 is parallel to the adjoining bracket, but directly beneath the bracket the arm is bent so that it slopes downwardly and inwardly towards the opposite arm as shown in FIG. 1.
  • This inelined portion is provided with a longitudinal slot 21, in which a head pin 22 that projects from the back of an ear cover 23 is slidably and rotatably mounted.
  • the head of the pin overlies the outer surface of the arm at opposite sides of the slot, but the head can be removed from the upper end of the slot by pulling it through a circular opening 24 that is just large enough to allow the head to pass through.
  • the effective diameter of the pin head is increased by mounting an elastic ring 25 on it.
  • This ring encircles the head of the pin tightly and extends inwardly along its inner surface. The ring has to be stretched in order to pull it off or to put it on the head.
  • the slots in spring arms 17 permit the ear covers to be adjusted up and down to fit over ears that are at different levels on different heads, the device must also accommodate heads of different widths between the ears.
  • the spring arms accomplish this be cause they can move in or out to decrease or increase the distance between the ear covers as required. Since the upper ends of the arms are mounted on brackets 5 above the cap brim, the arms extend straight down from flange 11 to the bottom of the brim. Then they slope inwardly and downwardly beneath the cap.
  • This device can be used with both the face shield and the ear protectors, or it can be used with the ear protectors without the face shield, or with the face shield without the ear protectors.
  • a welding helmet of the type that is swung up and down can be used. Generally, if there are times when it is not desired to use the ear protectors, they will not be removed but will merely be swung up above the cap brim and against the rear portion of the crown of the cap.
  • An ear protecting device for mounting on a safety cap having a brim, said device comprising a band adapted to surround the crown of such a cap, a pair of brackets mounted on the band at opposite sides thereof and provided with downwardly extending hooks for hooking under the edge of the brim, each of said brackets having an opening therethrough above said band, the axis of the opening extending substantially radially of the band, a cylindrical flange projecting outwardly from the bracket around said opening, a pair of spring arms for supporting ear covers, each arm having a hole through one end receiving one of said flanges, an ear cover carried by the other end of the arm, and a retaining lug projecting radially from the outer end portion of each cylindrical flange and overlapping the arm supported by the flange to hold it thereon, the wall of said arm hole being provided with a radial notch to enable the arm to be slipped off said flange after the arm has been rotated on the flange to align the notch with said
  • eac .said arms is a flat resilient strip having an upper po on substantially perpendicular to the axis of the cylindiical flange supporting it, and a lower portion normallysloping downwardly and inwardly from the lower end of said upper portion and tapered downwardly in cross section, each of said ear covers having a headed retaining pin projecting from its back, and said sloping-lower portion of each arm being provided with a central longitudinal slot for slidably and rotatably receivirifgf the retaining pin on the adjoining ear cover.
  • An ear protecting device including boltsextending through said bracket openings and having heads at the inner ends of the openings, the bolts being adapted to extend through holes in the opposite sides ofa face shield, and nuts on the outer ends of the bolts for clamping the shield against the outer ends of the said flanges.
  • An ear protecting device including resilient washers on said bolts for compression between the outer surface of a face shield and the inner ends of the "adjoining nuts to press the shield against said flanges":
  • An ear protecting device for mounting on a safety cap, comprising a pair of spring arms having upper ends formed for connection to the opposite sides of a safety cap, said arms being flat resilient strips having substantially parallel upper portions and lower portions normally slopingdownwardly toward each other from the lower ends of said upper portions, said downwardly sloping portion of each arm tapering in thickness and width toward its lower end, and an ear cover carried by the lower end of each arm and having a headed retaining pin projecting from its back, the sloping lower portion of each arm being provided with a central longitudinal slot slidably and rotatably receiving the retaining pin on the adjoining ear cover.
  • An ear-protecting device in which the lower end portion of each arm has a uniform thickness andwidth that is substantially the same as the thickness and width of the lower end of its tapered por-

Landscapes

  • Health & Medical Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Otolaryngology (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Helmets And Other Head Coverings (AREA)
  • Spinning Or Twisting Of Yarns (AREA)
US483409A 1974-06-26 1974-06-26 Ear protecting device for safety caps Expired - Lifetime US3898700A (en)

Priority Applications (10)

Application Number Priority Date Filing Date Title
US483409A US3898700A (en) 1974-06-26 1974-06-26 Ear protecting device for safety caps
GB3402576A GB1468638A (en) 1974-06-26 1975-03-27 Ear protecting device for safety caps
GB1304975A GB1468637A (en) 1974-06-26 1975-03-27 Ear protecting device for safety caps
ZA00752080A ZA752080B (en) 1974-06-26 1975-04-02 Ear protecting device for safety caps
CA225,714A CA1035901A (en) 1974-06-26 1975-04-29 Ear protecting device for safety caps
DE2520038A DE2520038C3 (de) 1974-06-26 1975-05-06 Vorrichtung zur Lagerung von Ohrabdeckungen an einem Sicherheitshelm
BR3699/75A BR7502909A (pt) 1974-06-26 1975-05-12 Um dispositivo protetor de ouvidos para capacete de seguranca
IT24700/75A IT1039352B (it) 1974-06-26 1975-06-24 Dispositivo proteggi orecchie per cashi di sicurezza
SE7507314A SE407663B (sv) 1974-06-26 1975-06-25 Oronskydd
CA295,155A CA1036751A (en) 1974-06-26 1978-01-18 Ear protecting device for safety caps

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US483409A US3898700A (en) 1974-06-26 1974-06-26 Ear protecting device for safety caps

Publications (1)

Publication Number Publication Date
US3898700A true US3898700A (en) 1975-08-12

Family

ID=23919950

Family Applications (1)

Application Number Title Priority Date Filing Date
US483409A Expired - Lifetime US3898700A (en) 1974-06-26 1974-06-26 Ear protecting device for safety caps

Country Status (8)

Country Link
US (1) US3898700A (sv)
BR (1) BR7502909A (sv)
CA (1) CA1035901A (sv)
DE (1) DE2520038C3 (sv)
GB (2) GB1468637A (sv)
IT (1) IT1039352B (sv)
SE (1) SE407663B (sv)
ZA (1) ZA752080B (sv)

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4069512A (en) * 1975-05-12 1978-01-24 Tore Georg Palmaer Locating device for ear-muffs on helmets
WO2011160157A1 (en) * 2010-06-21 2011-12-29 Jorge Miguel Pereira Ear muffs
USD741550S1 (en) 2014-05-02 2015-10-20 3M Innovative Properties Company Ear muff attachment arm
USD816209S1 (en) 2016-03-28 2018-04-24 3M Innovative Properties Company Respirator inlet port connection seal
USD827810S1 (en) 2016-03-28 2018-09-04 3M Innovative Properties Company Hardhat suspension adapter for half facepiece respirators
USD842982S1 (en) 2016-03-28 2019-03-12 3M Innovative Properties Company Hardhat suspension adapter for half facepiece respirators
US11020619B2 (en) 2016-03-28 2021-06-01 3M Innovative Properties Company Multiple chamber respirator sealing devices and methods
US11219787B2 (en) 2016-03-28 2022-01-11 3M Innovative Properties Company Respirator fit check sealing devices and methods
US11992078B2 (en) 2016-03-28 2024-05-28 3M Innovative Properties Company Headwear suspension attachment element

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE408851B (sv) * 1977-07-01 1979-07-16 T G Palmaer Anordning vid skyddshjaelm eller ett liknande baerorgan

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US13112A (en) * 1855-06-19 House
US306874A (en) * 1884-10-21 Carriage-top prop
US1560718A (en) * 1922-04-12 1925-11-10 Splitdorf Electrical Co Receiver headband
US3375529A (en) * 1966-11-22 1968-04-02 Mine Safety Appliances Co Assembly for mounting face protection devices on headgear
US3430261A (en) * 1967-03-01 1969-03-04 Air Reduction Sound attenuator attachment for a protective helmet
US3562816A (en) * 1969-06-23 1971-02-16 American Optical Corp Attachment mounting means for hearing protector earcups

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US13112A (en) * 1855-06-19 House
US306874A (en) * 1884-10-21 Carriage-top prop
US1560718A (en) * 1922-04-12 1925-11-10 Splitdorf Electrical Co Receiver headband
US3375529A (en) * 1966-11-22 1968-04-02 Mine Safety Appliances Co Assembly for mounting face protection devices on headgear
US3430261A (en) * 1967-03-01 1969-03-04 Air Reduction Sound attenuator attachment for a protective helmet
US3562816A (en) * 1969-06-23 1971-02-16 American Optical Corp Attachment mounting means for hearing protector earcups

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4069512A (en) * 1975-05-12 1978-01-24 Tore Georg Palmaer Locating device for ear-muffs on helmets
WO2011160157A1 (en) * 2010-06-21 2011-12-29 Jorge Miguel Pereira Ear muffs
USD741550S1 (en) 2014-05-02 2015-10-20 3M Innovative Properties Company Ear muff attachment arm
USD816209S1 (en) 2016-03-28 2018-04-24 3M Innovative Properties Company Respirator inlet port connection seal
USD827810S1 (en) 2016-03-28 2018-09-04 3M Innovative Properties Company Hardhat suspension adapter for half facepiece respirators
USD842982S1 (en) 2016-03-28 2019-03-12 3M Innovative Properties Company Hardhat suspension adapter for half facepiece respirators
US11020619B2 (en) 2016-03-28 2021-06-01 3M Innovative Properties Company Multiple chamber respirator sealing devices and methods
US11219787B2 (en) 2016-03-28 2022-01-11 3M Innovative Properties Company Respirator fit check sealing devices and methods
US11865375B2 (en) 2016-03-28 2024-01-09 3M Innovative Properties Company Respirator fit check sealing devices and methods
US11992078B2 (en) 2016-03-28 2024-05-28 3M Innovative Properties Company Headwear suspension attachment element

Also Published As

Publication number Publication date
CA1035901A (en) 1978-08-08
DE2520038B2 (de) 1978-07-27
BR7502909A (pt) 1976-07-06
IT1039352B (it) 1979-12-10
SE407663B (sv) 1979-04-09
DE2520038C3 (de) 1979-04-12
ZA752080B (en) 1976-06-30
SE7507314L (sv) 1975-12-29
GB1468637A (en) 1977-03-30
DE2520038A1 (de) 1976-01-15
GB1468638A (en) 1977-03-30

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