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US2680158A - Bone conduction hearing aid - Google Patents

Bone conduction hearing aid Download PDF

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Publication number
US2680158A
US2680158A US172789A US17278950A US2680158A US 2680158 A US2680158 A US 2680158A US 172789 A US172789 A US 172789A US 17278950 A US17278950 A US 17278950A US 2680158 A US2680158 A US 2680158A
Authority
US
United States
Prior art keywords
armature
bone conduction
adjustment
spider
air gap
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
US172789A
Other languages
English (en)
Inventor
Wolff Joachim
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.)
FORTIPHONE Ltd
Original Assignee
FORTIPHONE 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 FORTIPHONE Ltd filed Critical FORTIPHONE Ltd
Application granted granted Critical
Publication of US2680158A publication Critical patent/US2680158A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R25/00—Deaf-aid sets, i.e. electro-acoustic or electro-mechanical hearing aids; Electric tinnitus maskers providing an auditory perception
    • H04R25/60—Mounting or interconnection of hearing aid parts, e.g. inside tips, housings or to ossicles
    • H04R25/604—Mounting or interconnection of hearing aid parts, e.g. inside tips, housings or to ossicles of acoustic or vibrational transducers
    • H04R25/606—Mounting or interconnection of hearing aid parts, e.g. inside tips, housings or to ossicles of acoustic or vibrational transducers acting directly on the eardrum, the ossicles or the skull, e.g. mastoid, tooth, maxillary or mandibular bone, or mechanically stimulating the cochlea, e.g. at the oval window
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R11/00—Transducers of moving-armature or moving-core type
    • H04R11/02—Loudspeakers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R2460/00—Details of hearing devices, i.e. of ear- or headphones covered by H04R1/10 or H04R5/033 but not provided for in any of their subgroups, or of hearing aids covered by H04R25/00 but not provided for in any of its subgroups
    • H04R2460/13—Hearing devices using bone conduction transducers

Definitions

  • This invention relates to vbone conduction hearing aids, sometimes termed bone conduction telephones, i. e. to telephones, usually of very small size, which are designed to convey sound to the user by transmitting sound pressure waves through the bones of the users head.
  • bone conduction telephones sometimes termed bone conduction telephones, i. e. to telephones, usually of very small size, which are designed to convey sound to the user by transmitting sound pressure waves through the bones of the users head.
  • the gap adjustment means provided in bone conduction telephones as at present known are seldom as simple and convenient to use as is desired. Moreover, the known generally employed gap adjustment means are not such as to avoid undesired tilting of the armature with consequent asymmetry of the air gap. Because ofthe smallness of the air gap the avoiding of such tilting and consequent asymmetry is very impotrant to fidelity and response.
  • the present invention seeks to provide improved bone conduction telephones in which the air gap adjustment means shall be such that tilting of the-armature can be readily avoided and which shall nevertheless be very simple in construction and convenient and easy to use.
  • a bone conduction telephone unit having a vibratory armature which is resiliently-supported so as to be spaced magnetic system by an air gap is characterised by the provision of three separately adjustable adjusting devices so arranged as to adjust said air gap at three spaced points around it.
  • the armature is resiliently supported from theremainder of the magnetic system ⁇ and the adjustment devices act at three spaced points on the supporting means.
  • the supportmeans for the armature is itself carried or supported from the remainder of the magnetlclsystem, at ythree points.
  • the armature is supported by a England, assignor to spider and each arm being arranged to be adjustably pressed up at its other end against the arcuate means of an adjustment screw which presses against an intermediate
  • applicants copending application Serial No. 171,921, led July 3, 1950 the claims are directed to the structure of the adjustment devices illustrated.
  • Figure 1 is an elevation partly in section
  • Figure 2 is a plane with one arm of the three-armed exible support for the armature broken partly in section Referring 'A4 are large and the other three A are small.
  • the ring magnet sub-assembly consists of one blies are put together.
  • the sub-assembly C' with which this invention is concerned consists of a top plate CI on which is carried, by means of screws C2 screwing therein, a exible support or diaphragm member for the armature.
  • This support is in the form of a three armed spider C3 the outer ends of the arms of which are drilled to pass the shanks of the screws C2.
  • Each screw C2 passes rst accedas central hole and the armature structure, which is not shown in detail since it forms per se no part of this invention is carried from the centre of the spider by means of its two parts C5, C1 which screw together to Clamp the centre of the spider between them.
  • Deformable adjustment strips C5 which are of springy, deformable metal, lie underneath the arcuate outer parts of the spider arms and each has an upturned end C8 which bears against the underside of the appropriate arcuate outer part about half way between its anchoring screw C2 and the radial part of the arm.
  • Adjustment screws C9 screw into tapped holes in the top plate Ci and each, when screwed up, presses up from underneath against the appropriate adjustment strip C5 about a third of the way along from its anchored end.
  • the three sub-assemblies are put together in line as shown in Figure 1 with the magnet B between the sub-assemblies A and C.
  • the large holes AG are big enough to pass the heads of the adjustment screws C9 which lie in said holes and are accessible for adjustment.
  • small holes A5 which are countersunk on the underside pass the shanks of screws Clt which screw into tapped holes in the top plate Cl and hold the sub-assemblies together with the lower face of the armature spaced by a small (adjustable) air gap from the top face of the central pole piece A2 and the top face of the top plate Cl which is co-planar with the said pole piece face.
  • a telephone unit as above described and illustrated is mounted in a suitable casing (not shown) -for example of the material known under the registered trade mark of Bakelitesuch mounting being most conveniently fitted by drilling and tapping the centre of the upper or clamping part of the armature structure and employing a bolt which passes through the centre of the back of the casing into this drilled and tapped hole and therefore holds the armature firmly up against the inside of the back of the casing.
  • This holding bolt is thus the sole support for the telephone proper.
  • pressure sound waves are transmitted to the back of the casing and then through the casing to the front thereof, which is made of suitably hollow shape as known per se to fit comfortably and efficiently against the sound receiving bone of the wearer.
  • each of the deformable strip shaped adjustment members C5 of Figure l is replaced by a coiled spring C55 which may be helical or, as shown, spirohelical.
  • the compression of this spring is adjusted by an adjustment screw C59 and the upper end of the spring i. e. the end remote from the screw C59 has inserted therein the stem part of a taper headed member C58 which performs a function similar to that of the parts C8 of Figure l and bears against the underside of the appropriate arms of the spider C3 where, if desired, a small dimple may be formed to receive the point of the head of the member C58.
  • the three points at which each adjustment is effectedv are equally spaced around a circle, this is not necessary and they may be irregularly spaced, though the arrangements described are preferred where (as is not always the case) the magnet system is circular.
  • the resilient support means for the armature is likewise carried at three points equally spaced around a circle, this too is not necessary and other arrangements are possible.
  • a diaphragm-like disc instead of using a three legged flexible springy spider as described, a diaphragm-like disc may be used and this disc may be supported at three points around its edge or simply clamped peripherally.
  • the invention is not limited to the circular type of construction, for square and rectangular shapes can be used.
  • a bone conduction telephone unit comprising a vibratory armature forming part of a magnetic system, resilient support means carried upon the remainder of said system and supporting said armature resiliently therefrom with an air gap therebetween, said support means being formed as a three legged spider with equally spaced arms, and means for adjusting said gap, said last-mentioned means comprising three separately adjustable adjusters each of which acts upon a different arm of said spider.
  • a bone conduction telephone unit comprising a vibratory armature forming part of a magnetic system, resilient support means carried upon the remainder of said system and supporting said armature resiliently therefrom with an air gap therebetween, said support means being formed as a three legged spider with equally spaced arms each comprising a radial portion and an arcuate portion outwardly thereof, and means for adjusting said gap, said last-mentioned means comprising three separately adjustable adjusters each of which acts upon a different arm of said spider at an intermediate point along the arcuate portion thereof.
  • a bone conduction telephone unit compris- ,Ying a vibratory armature forming part of a magnetic system, resilient support means carried upon the remainder of said system and supporting said armature resiliently therefrom with an air gap therebetween, said support means being formed as a three legged spider with equally spaced arms. each comprising a radial portion and an arcuate portion outwardly thereof, and means for adjusting said gap, said last-mentioned means comprising three separately adjustable screw adjusters each of which acts upon a different arm of said spider at an intermediate point along the arcuate portion thereof.

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  • Physics & Mathematics (AREA)
  • Health & Medical Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Otolaryngology (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Neurosurgery (AREA)
  • Electromagnetism (AREA)
  • Details Of Audible-Bandwidth Transducers (AREA)
  • Magnetic Treatment Devices (AREA)
  • Percussion Or Vibration Massage (AREA)
US172789A 1949-08-16 1950-07-10 Bone conduction hearing aid Expired - Lifetime US2680158A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB21331/49A GB672988A (en) 1949-08-16 1949-08-16 Improvements in or relating to bone conduction hearing aids

Publications (1)

Publication Number Publication Date
US2680158A true US2680158A (en) 1954-06-01

Family

ID=10161077

Family Applications (1)

Application Number Title Priority Date Filing Date
US172789A Expired - Lifetime US2680158A (en) 1949-08-16 1950-07-10 Bone conduction hearing aid

Country Status (4)

Country Link
US (1) US2680158A (fr)
DE (1) DE821222C (fr)
FR (1) FR1022247A (fr)
GB (1) GB672988A (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20180264266A1 (en) * 2016-11-14 2018-09-20 Otolith Sound Inc. Systems, devices, and methods for treating vestibular conditions
US11284205B2 (en) 2016-11-14 2022-03-22 Otolith Sound Inc. Systems, devices, and methods for treating vestibular conditions
US12053426B2 (en) 2014-09-29 2024-08-06 Otolith Sound Inc. Device for mitigating motion sickness and other responses to inconsistent sensory information

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1187678B (de) * 1962-03-01 1965-02-25 Heinrich Peiker Koerperschallmikrophon, insbesondere Kehlkopfmikrophon

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2000165A (en) * 1934-01-10 1935-05-07 Bell Telephone Labor Inc Acoustic device
US2062372A (en) * 1933-08-11 1936-12-01 Sonotone Corp Bone conduction hearing aid
USRE21030E (en) * 1933-11-11 1939-03-14 Emil Henry Greibach Bone conduction hearing device
US2410805A (en) * 1942-01-16 1946-11-12 Bell Telephone Labor Inc Vibration detector
US2441975A (en) * 1941-11-28 1948-05-25 Int Standard Electric Corp Electromagnetic throat microphone
US2463786A (en) * 1947-02-10 1949-03-08 E A Myers & Sons Electromagnetic mechanism for bone conduction receivers, etc.

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2062372A (en) * 1933-08-11 1936-12-01 Sonotone Corp Bone conduction hearing aid
USRE21030E (en) * 1933-11-11 1939-03-14 Emil Henry Greibach Bone conduction hearing device
US2000165A (en) * 1934-01-10 1935-05-07 Bell Telephone Labor Inc Acoustic device
US2441975A (en) * 1941-11-28 1948-05-25 Int Standard Electric Corp Electromagnetic throat microphone
US2410805A (en) * 1942-01-16 1946-11-12 Bell Telephone Labor Inc Vibration detector
US2463786A (en) * 1947-02-10 1949-03-08 E A Myers & Sons Electromagnetic mechanism for bone conduction receivers, etc.

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US12053426B2 (en) 2014-09-29 2024-08-06 Otolith Sound Inc. Device for mitigating motion sickness and other responses to inconsistent sensory information
US20180264266A1 (en) * 2016-11-14 2018-09-20 Otolith Sound Inc. Systems, devices, and methods for treating vestibular conditions
US10398897B2 (en) * 2016-11-14 2019-09-03 Otolith Sound Inc. Systems, devices, and methods for treating vestibular conditions
US10702694B2 (en) 2016-11-14 2020-07-07 Otolith Sound Inc. Systems, devices, and methods for treating vestibular conditions
US11284205B2 (en) 2016-11-14 2022-03-22 Otolith Sound Inc. Systems, devices, and methods for treating vestibular conditions

Also Published As

Publication number Publication date
DE821222C (de) 1951-11-15
FR1022247A (fr) 1953-03-02
GB672988A (en) 1952-05-28

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