US2680157A - Bone conduction telephone receiver - Google Patents

Bone conduction telephone receiver Download PDF

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Publication number
US2680157A
US2680157A US171921A US17192150A US2680157A US 2680157 A US2680157 A US 2680157A US 171921 A US171921 A US 171921A US 17192150 A US17192150 A US 17192150A US 2680157 A US2680157 A US 2680157A
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US
United States
Prior art keywords
adjustment
armature
bone conduction
screws
spider
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
US171921A
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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 US2680157A publication Critical patent/US2680157A/en
Anticipated expiration legal-status Critical
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    • 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 bone telephone receivers that is to say to telephone screws. All these and other proposals which have been made present more or less serious practical defects.
  • the known arrangements depending upon une pitch screws present the defect that since necessarily the threaded holes in which the L-shaped pole pieces are deformed present the disadvantage that there is only one position of adjustment in England, assignor to Limited, London, England, a cominvention adjustment of the gap of a bone conduction telephone receiver is effected through the medium of one or more resilient deformable members each or" which bears upon the flexible support for the armature and each of which is subjected to adjustable deformation by an adjustment member.
  • the adjustment members screws.
  • the adjustment members act through resilient strip deformable According to this pole-piece-armature are preferably ber will produce a considerably smaller adjustment movement of the flexible support for the armature. Acordingly ne adjustment is rendered much easier.
  • Locking means may be used can be locked, after adjustment, by means of lacquer or by locking grub screws or lock nuts.
  • the resilient deformable members partake to some extent of the nature of auxiliary diaphragms in contact with the main exible support for the armature (which may be regarded as the main diaphragm) they aiTect the frequency response of the receiver. This is, from the manufacturing and design point of View, an advantage and by suitably selecting the dimensions and materials of those members the frequency response of a receiver may be made to follow closely a desirable frequency characteristie. Itis, therefore, possible to produce a range of receivers of the same general design but with diierent frequency response characteristics to meet the requirements of dierent users.
  • Figures l to Il show one embodiment and Figure 5 shows a modification.
  • Figure l is an elevation partly in sec-
  • Figure 2 is a plan with one arm of the three-armed flexible support for the armature broken away to show one of the resilientI deformable members underneath
  • Figure 3 is a plan o1" the ring magnet
  • Figure 4 is a plan of the back plate and coil assembly of one embodiment while Figure 5 is an elevation partly in section, of a modification.
  • a bone conduction telephone receiver unit comprising three main sub-assemblies namely a baci; plate core and coil assembly A, a ring magnet B, and a front plate, armature and adjustment assembly C.
  • the sub-assembly A comprises a ferro-magnet back plate Al with an upstanding central pole piece A2 on which is a coil A3 and which has a ring of six holes of which three alternate holes A4 are large and the other three [it small.
  • the two additional small holes A@ pass the leads to the coil A3.
  • the ring-magnet sub-assembly consists of -one part, namely the ring magnet B itself, which 'is formed with a ring of six haii-holes El inline with the holes Afl and A5 when the sub-assemblies 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 thereon, a flexible support or diaphragm member for the armature.
  • rfhis support is in the form ol a three armed spider' C3 the cuter ends of the arms of which are drilled to pass the shanks of the screws C2.
  • Each screw C2 passes iirst through a hole in the appropriate spider arm, then through a spacing collar Cil, then through a hole in the end of a deformable adjustment member C5.
  • the centre of the spider has a 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 01"' its two parts Ct, C'i which screw together to clamp the centre of the spider between them.
  • Deformable adjustment strips which are of springy, deformable metal, lie
  • Adjustment screws C9 screw into tapped holes in the top plate Cl 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 l with the magnet B between the sub-assemblies A and C.
  • the large holes All are big enough to pass the heads of the adjustment screws C9 which lie in said holes and are accessible for adjustment.
  • the small holes A5 which are countersunk on the under side pass the shanks of screws Ci@ 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 Ci which is coplanar 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 Bal elitesuch mounting being most conveniently tted 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 suitable hollow shape as known per se to t comfortably and efciently against the sound receiving bone of the wearer.
  • each of the deformable strip shaped adjustment members C5 of Figure 1 is replaced by a coiled spring C55 which may be helical or, as shown spirohelical. rIhe 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 stern part oi 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 arm of the spider C3, where, if desired, a small dimple may be formed to receive the point of the head of the member C58. It is thought that the remainder of Figure 5 will be self-evident from the description already given of Figure 1, like parts in both figures carrying the same references.
  • a bone conduction telephone receiver unit having an armature supported adjacent a magnetic pole piece by iiexible support means providing an air gap between said armature and said pole piece, adjustment means for adjusting said air gap said adjustment means comprising a resilient deformable member engaging said ilexible support means and constituted by an anchored strip and means engaging said deformthe anchorage of said strip member and where said strip member engages the flexible support means, adjustably to deform the same.
  • a unit as claimed in claim l wherein said flexible support means is a iiexible spider having arms each having a radial portion extending into an arcuate portion anchored at the far end and one of which is engaged by the resilient deformable member between the ends of said arcuate portion.
  • a bone conduction telephone receiver unit having an armature supported adjacent a magnetic pole piece by flexible support means providing an air gap between said armature and said pole piece, adjustment means for adjusting said air gap, said adjustment means comprising a resilient deformable member engaging said ilexible support means and means engaging said deformable member adjustably to deform the same, said Iiexible support means being a flexible spider having a plurality of arms and said resilient deformable member being a strip anchored at one end and having its other end upturned to engage an arm of said spider.
  • a bone conduction telephone receiver unit having an armature supported adjacent a magnetic pole piece by flexible support means providing an air gap between said armature and said pole piece, adjustment means for adjusting said air gap said adjustment means comprising a resilient deformable member engaging said flexible support means and constituted by an anchored strip and a screw engaging said deformable strip member intermediate the anchorage of said strip member and Where said strip member engages the ilexible support means, adjustably to deform the same.

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  • Physics & Mathematics (AREA)
  • General Health & Medical Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Health & Medical Sciences (AREA)
  • Otolaryngology (AREA)
  • Electromagnetism (AREA)
  • Neurosurgery (AREA)
  • Telephone Set Structure (AREA)
  • Magnetic Treatment Devices (AREA)
  • Rehabilitation Tools (AREA)
  • Headphones And Earphones (AREA)
  • Audible-Bandwidth Dynamoelectric Transducers Other Than Pickups (AREA)
US171921A 1949-07-25 1950-07-03 Bone conduction telephone receiver Expired - Lifetime US2680157A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB19547/49A GB671957A (en) 1949-07-25 1949-07-25 Improvements in or relating to bone conduction telephone receivers

Publications (1)

Publication Number Publication Date
US2680157A true US2680157A (en) 1954-06-01

Family

ID=10131201

Family Applications (1)

Application Number Title Priority Date Filing Date
US171921A Expired - Lifetime US2680157A (en) 1949-07-25 1950-07-03 Bone conduction telephone receiver

Country Status (5)

Country Link
US (1) US2680157A (is")
DE (1) DE826149C (is")
FR (1) FR1030588A (is")
GB (1) GB671957A (is")
NL (1) NL79002C (is")

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2773941A (en) * 1951-07-18 1956-12-11 American Danish Oticon Corp Hearing aid apparatus
US2804509A (en) * 1952-07-17 1957-08-27 Sonotone Corp Inertia type electromechanical sound transducing device
US2832842A (en) * 1952-07-17 1958-04-29 Sonotone Corp Body contacting inertia reaction electromechanical transducing devices
EP2403272A1 (en) 2010-06-29 2012-01-04 Oticon Medical A/S Vibrator with adjustment system

Citations (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US990275A (en) * 1907-05-23 1911-04-25 Stanislaw A Koltonski Telephone-transmitter.
US1356156A (en) * 1917-10-10 1920-10-19 Internat Callophone Corp Telephonic receiver
US1404817A (en) * 1921-02-28 1922-01-31 Philip J Werber Telephone attachment
GB396990A (en) * 1932-12-06 1933-08-17 John Henry Walter Lewis Improvements in loud speakers and other apparatus for interconverting electrical andacoustic vibrations
US1939922A (en) * 1931-01-15 1933-12-19 Crosley Radio Corp Centering device for loud speaker cones
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
US2264684A (en) * 1938-03-17 1941-12-02 Telephonics Corp Bone telephone receiver
US2410805A (en) * 1942-01-16 1946-11-12 Bell Telephone Labor Inc Vibration detector
US2459325A (en) * 1944-10-27 1949-01-18 Zenith Radio Corp Bone conduction unit
US2463786A (en) * 1947-02-10 1949-03-08 E A Myers & Sons Electromagnetic mechanism for bone conduction receivers, etc.
US2500541A (en) * 1945-07-18 1950-03-14 Emil H Greibach Inertia-type electromechanical sound transducing device

Patent Citations (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US990275A (en) * 1907-05-23 1911-04-25 Stanislaw A Koltonski Telephone-transmitter.
US1356156A (en) * 1917-10-10 1920-10-19 Internat Callophone Corp Telephonic receiver
US1404817A (en) * 1921-02-28 1922-01-31 Philip J Werber Telephone attachment
US1939922A (en) * 1931-01-15 1933-12-19 Crosley Radio Corp Centering device for loud speaker cones
GB396990A (en) * 1932-12-06 1933-08-17 John Henry Walter Lewis Improvements in loud speakers and other apparatus for interconverting electrical andacoustic vibrations
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
US2264684A (en) * 1938-03-17 1941-12-02 Telephonics Corp Bone telephone receiver
US2410805A (en) * 1942-01-16 1946-11-12 Bell Telephone Labor Inc Vibration detector
US2459325A (en) * 1944-10-27 1949-01-18 Zenith Radio Corp Bone conduction unit
US2500541A (en) * 1945-07-18 1950-03-14 Emil H Greibach Inertia-type electromechanical sound transducing device
US2463786A (en) * 1947-02-10 1949-03-08 E A Myers & Sons Electromagnetic mechanism for bone conduction receivers, etc.

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2773941A (en) * 1951-07-18 1956-12-11 American Danish Oticon Corp Hearing aid apparatus
US2804509A (en) * 1952-07-17 1957-08-27 Sonotone Corp Inertia type electromechanical sound transducing device
US2832842A (en) * 1952-07-17 1958-04-29 Sonotone Corp Body contacting inertia reaction electromechanical transducing devices
EP2403272A1 (en) 2010-06-29 2012-01-04 Oticon Medical A/S Vibrator with adjustment system
EP2403271A1 (en) 2010-06-29 2012-01-04 Oticon Medical A/S Vibrator with adjustment system
US8837761B2 (en) 2010-06-29 2014-09-16 Oticon Medical A/S Vibrator with adjustment system
AU2011203159B2 (en) * 2010-06-29 2015-12-24 Oticon Medical A/S Vibrator With Adjustment System

Also Published As

Publication number Publication date
NL79002C (is")
GB671957A (en) 1952-05-14
FR1030588A (fr) 1953-06-15
DE826149C (de) 1951-12-27

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