GB1375919A - Telephones - Google Patents

Telephones

Info

Publication number
GB1375919A
GB1375919A GB5620072A GB5620072A GB1375919A GB 1375919 A GB1375919 A GB 1375919A GB 5620072 A GB5620072 A GB 5620072A GB 5620072 A GB5620072 A GB 5620072A GB 1375919 A GB1375919 A GB 1375919A
Authority
GB
United Kingdom
Prior art keywords
adaptor
receiver
switch
inductive coupling
telephone
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
Application number
GB5620072A
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.)
VIENNATONE HOERGERAETE
Original Assignee
VIENNATONE HOERGERAETE
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 VIENNATONE HOERGERAETE filed Critical VIENNATONE HOERGERAETE
Publication of GB1375919A publication Critical patent/GB1375919A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M1/00—Substation equipment, e.g. for use by subscribers
    • H04M1/02—Constructional features of telephone sets
    • H04M1/21—Combinations with auxiliary equipment, e.g. with clocks or memoranda pads
    • H04M1/215—Combinations with auxiliary equipment, e.g. with clocks or memoranda pads by non-intrusive coupling means, e.g. acoustic couplers
    • H04M1/2155—Acoustic coupling
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M1/00—Substation equipment, e.g. for use by subscribers
    • H04M1/02—Constructional features of telephone sets
    • H04M1/03—Constructional features of telephone transmitters or receivers, e.g. telephone hand-sets
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M1/00—Substation equipment, e.g. for use by subscribers
    • H04M1/60—Substation equipment, e.g. for use by subscribers including speech amplifiers
    • H04M1/62—Constructional arrangements

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Telephone Set Structure (AREA)

Abstract

1375919 Hearing aids; inductive signalling VIENNATONE HORGERATE PRODUKTIONS GmbH 6 Dec 1972 [9 Dec 1971] 56200/72 Headings H4J and H4U An adaptor, for amplifying signals from a telephone receiver 4 and providing for inductive coupling of the amplified signals to a "telephone coil" of a hearing aid, comprises a piezoelectric or capacitor microphone 3, a transistor amplifier mounted on a circuit board 2, a battery (Fig. 2, not shown), and an iron cored coil 7 for providing inductive coupling to a hearing aid telephone coil situated within 10 cm. of the adaptor. The adaptor is mounted on the receiver 4 by a rubber sleeve 11 and a switch 10 is provided which is held depressed to operate the adaptor. Alternatively a mercury switch may be provided which switches on the adaptor when the hand set is held vertically or the adaptor can be made as two telescopically engaging parts such that when the ear piece of the adaptor is pressed against the ear a switch is actuated. Sound apertures 5 are provided to enable the receiver to be used conventionally with the adaptor mounted. Figures 3, 4 (not shown), illustrate a variation in arrangement of the adaptor wherein most of the components are mounted so as to lie adjacent the periphery of receiver 4 thereby reducing the dimension of the adaptor in the axial direction thereof. The amplifier may be arranged to have a frequency response which compensates for the low frequency loss in the receiver-microphone coupling due to the apertures 5, and for the high frequency boost caused by the inductive coupling.
GB5620072A 1971-12-09 1972-12-06 Telephones Expired GB1375919A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
AT1061371A AT320750B (en) 1971-12-09 1971-12-09 Telephone adapter for the hard of hearing that can be attached to a telephone higher

Publications (1)

Publication Number Publication Date
GB1375919A true GB1375919A (en) 1974-12-04

Family

ID=3623544

Family Applications (1)

Application Number Title Priority Date Filing Date
GB5620072A Expired GB1375919A (en) 1971-12-09 1972-12-06 Telephones

Country Status (3)

Country Link
AT (1) AT320750B (en)
DE (1) DE2259087B2 (en)
GB (1) GB1375919A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2154390A (en) * 1984-02-14 1985-09-04 Michael George Scott Debenham Telephone handset earpiece attachment
WO2004049503A1 (en) * 2002-11-26 2004-06-10 Myers Johnson, Inc. Universal wireless interface system
EP1769654A2 (en) * 2004-07-13 2007-04-04 Motorola, Inc. Method and system for selective coupling of a communication unit to a hearing enhancement device

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2515456B1 (en) * 1981-10-28 1989-07-28 Lem REMOVABLE AMPLIFIED EARPHONE
DE3414331A1 (en) * 1984-04-16 1985-10-17 Siemens AG, 1000 Berlin und 8000 München Circuit arrangement for increasing the volume in the case of dynamic transducers
EP2023652A1 (en) * 2007-07-30 2009-02-11 Alcatel Lucent Audio driver device and method of operating an audio driver device

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE652080C (en) * 1926-11-17 1937-10-25 Heinrich J Kuechenmeister Arrangement for teleconsulting and remote listening to a telephone
DE1042655B (en) * 1955-07-01 1958-11-06 Kapsch Telephon Telegraph Handset for telephone stations
DE1781840U (en) * 1958-11-25 1959-01-29 Kieler Howaldtswerke Ag DEVICE FOR LISTENING TO THE TELEPHONE.
DE1831646U (en) * 1961-02-06 1961-05-25 Bock Manfred TRANSISTOR RECEIVER AMPLIFIER.
DE1277352B (en) * 1966-10-11 1968-09-12 Robert James Cooke Sound playback device for attaching to a telephone receiver

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2154390A (en) * 1984-02-14 1985-09-04 Michael George Scott Debenham Telephone handset earpiece attachment
WO2004049503A1 (en) * 2002-11-26 2004-06-10 Myers Johnson, Inc. Universal wireless interface system
EP1769654A2 (en) * 2004-07-13 2007-04-04 Motorola, Inc. Method and system for selective coupling of a communication unit to a hearing enhancement device
EP1769654A4 (en) * 2004-07-13 2009-07-29 Motorola Inc Method and system for selective coupling of a communication unit to a hearing enhancement device

Also Published As

Publication number Publication date
DE2259087A1 (en) 1973-06-14
DE2259087B2 (en) 1981-07-09
AT320750B (en) 1975-02-25

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Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee