CA1022854A - Telephone acoustic amplifier - Google Patents

Telephone acoustic amplifier

Info

Publication number
CA1022854A
CA1022854A CA220,794A CA220794A CA1022854A CA 1022854 A CA1022854 A CA 1022854A CA 220794 A CA220794 A CA 220794A CA 1022854 A CA1022854 A CA 1022854A
Authority
CA
Canada
Prior art keywords
acoustic amplifier
telephone
telephone acoustic
amplifier
acoustic
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
CA220,794A
Other languages
English (en)
French (fr)
Inventor
Abram N. Spanel
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Application granted granted Critical
Publication of CA1022854A publication Critical patent/CA1022854A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M15/00—Arrangements for metering, time-control or time indication ; Metering, charging or billing arrangements for voice wireline or wireless communications, e.g. VoIP
    • H04M15/28—Arrangements for metering, time-control or time indication ; Metering, charging or billing arrangements for voice wireline or wireless communications, e.g. VoIP with meter at substation or with calculation of charges at terminal
    • H04M15/30—Arrangements for metering, time-control or time indication ; Metering, charging or billing arrangements for voice wireline or wireless communications, e.g. VoIP with meter at substation or with calculation of charges at terminal the meter or calculation of charges not being controlled from an exchange
    • 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
    • H04M1/64—Automatic arrangements for answering calls; Automatic arrangements for recording messages for absent subscribers; Arrangements for recording conversations
    • H04M1/65—Recording arrangements for recording a message from the calling party
    • H04M1/656—Recording arrangements for recording a message from the calling party for recording conversations

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Telephone Set Structure (AREA)
CA220,794A 1974-03-04 1975-02-24 Telephone acoustic amplifier Expired CA1022854A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US447690A US3887771A (en) 1974-03-04 1974-03-04 Telephone adapter

Publications (1)

Publication Number Publication Date
CA1022854A true CA1022854A (en) 1977-12-20

Family

ID=23777345

Family Applications (1)

Application Number Title Priority Date Filing Date
CA220,794A Expired CA1022854A (en) 1974-03-04 1975-02-24 Telephone acoustic amplifier

Country Status (14)

Country Link
US (1) US3887771A (xx)
JP (1) JPS50126106A (xx)
AU (1) AU7848375A (xx)
BE (1) BE826226A (xx)
BR (1) BR7501232A (xx)
CA (1) CA1022854A (xx)
CH (1) CH584991A5 (xx)
DE (1) DE2508387A1 (xx)
DK (1) DK82475A (xx)
FR (1) FR2263647B1 (xx)
GB (1) GB1493535A (xx)
IT (1) IT1029866B (xx)
NL (1) NL7502268A (xx)
SE (1) SE384959B (xx)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3928723A (en) * 1973-07-02 1975-12-23 Kazuo Kai Telephone set with built-in loudspeaker
US4115659A (en) * 1977-06-16 1978-09-19 Abram N. Spanel Electroacoustical telephone adapter
US4362905A (en) * 1980-01-29 1982-12-07 Nassar Ismail Universal adapters for modular plug telephones
US4326102A (en) * 1980-02-04 1982-04-20 Msi Data Corporation Audio data transmission device with coupling device
US5291541A (en) * 1992-12-21 1994-03-01 At&T Bell Laboratories Coupling apparatus for telephone handsets
US5613222A (en) * 1994-06-06 1997-03-18 The Creative Solutions Company Cellular telephone headset for hand-free communication
US5850439A (en) * 1996-02-20 1998-12-15 Cotron Corporation Hands-free phone converter
TWI500609B (zh) 2007-06-12 2015-09-21 Solvay 含有環氧氯丙烷的產品，其製備及其不同應用中的用途
GB2483308A (en) * 2010-09-06 2012-03-07 Jack Kemp Docking device with pickup coil coupled to electromagnetic transducer
US10418955B2 (en) * 2017-04-10 2019-09-17 Language Line Services, Inc. Process for acoustic amplification in a mobile device application

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US799659A (en) * 1905-05-24 1905-09-19 George Griffin Lewis Ear-trumpet.
US2609045A (en) * 1951-04-16 1952-09-02 Henry R Kaiser Timer attachment for telephones
US2987575A (en) * 1955-11-10 1961-06-06 Norman L Chalfin Two way telephone handset amplifying system
US3376390A (en) * 1958-12-30 1968-04-02 Hashimoto Kazuo Telephone answering device
US3512355A (en) * 1967-10-26 1970-05-19 Goldentone Electronics Inc Telephone timing device

Also Published As

Publication number Publication date
SE384959B (sv) 1976-05-24
FR2263647B1 (xx) 1980-05-30
FR2263647A1 (xx) 1975-10-03
IT1029866B (it) 1979-03-20
JPS50126106A (xx) 1975-10-03
NL7502268A (nl) 1975-09-08
DE2508387A1 (de) 1975-09-11
CH584991A5 (xx) 1977-02-15
US3887771A (en) 1975-06-03
SE7502351L (xx) 1975-09-05
BR7501232A (pt) 1975-12-02
DK82475A (xx) 1975-11-03
GB1493535A (en) 1977-11-30
AU7848375A (en) 1976-08-26
BE826226A (fr) 1975-09-03

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