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US1588547A - Telephone receiver - Google Patents

Telephone receiver Download PDF

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Publication number
US1588547A
US1588547A US708905A US70890524A US1588547A US 1588547 A US1588547 A US 1588547A US 708905 A US708905 A US 708905A US 70890524 A US70890524 A US 70890524A US 1588547 A US1588547 A US 1588547A
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US
United States
Prior art keywords
telephone receiver
magnetic
diaphragm
magnet
portions
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
US708905A
Inventor
Lawrence R Golladay
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.)
Westinghouse Electric Corp
Original Assignee
Westinghouse Electric Corp
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 Westinghouse Electric Corp filed Critical Westinghouse Electric Corp
Priority to US708905A priority Critical patent/US1588547A/en
Application granted granted Critical
Publication of US1588547A publication Critical patent/US1588547A/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
    • H04R13/00—Transducers having an acoustic diaphragm of magnetisable material directly co-acting with electromagnet
    • H04R13/02—Telephone receivers

Definitions

  • Za/MV ATTORNEY is i riiticn. is @rinsed to take place in the ux passing through thc diaphragm, and eddy curren looses, as well as other iron losses in 'the magnet-body, are ilvoidcd.
  • ticino es my ii'rvention: l Y ii teiepiionc receiver, a. inzignctic circuit comprising n, iiisiphrngm, a permanent mfiet, a pair ci' pole pieces thereon 'of er incren'icnizii permeability than the crient magnet, said pole pieces having portions forming a magnetic s'iiunt, and fr sourceof alternating magn'etomotive 'force associated with said magnetic shunt.
  • a telephone receiver e diaphragm
  • a magnetic circuit comprising u, pair of members of high incremental permeability and said diaphragm, 'si pernmnent magnet associated with seid; magnetic circuit for establishing a steady iiux through two portions of seid magnetic circuit in parallel, und a coil associated with said magnetic circuit for establishing e, Varying' flux: through said portions' in Series.

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  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Thin Magnetic Films (AREA)

Description

Juxxe 15 v1926.V
wlTNsssE's:
L.. R. GOLLADAY TELEPHONE RECEIVER Filed April 25 1924 INVENTOR BY aaa/@7" Za/MV ATTORNEY is i riiticn. is @rinsed to take place in the ux passing through thc diaphragm, and eddy curren looses, as weil as other iron losses in 'the magnet-body, are ilvoidcd.
1Niie Li'. have shown only one ernboiii` ment of my invention in the accompanying dm'evings, it capable of various changes imei modifications Without departing from the spirit thereof, and it is desired, there fore, that oniy :auch limitations simil be inii- @cocci iiereon are indicated in ,the prior nrt or indicated in the appended., c'ieinis.
ticino es my ii'rvention: l Y ii teiepiionc receiver, a. inzignctic circuit comprising n, iiisiphrngm, a permanent mfiet, a pair ci' pole pieces thereon 'of er incren'icnizii permeability than the crient magnet, said pole pieces having portions forming a magnetic s'iiunt, and fr sourceof alternating magn'etomotive 'force associated with said magnetic shunt.
2. in ,a telephone receiver, e diaphragm, a magnetic circuitcomprising u, pair of members of high incremental permeability and said diaphragm, 'si pernmnent magnet associated with seid; magnetic circuit for establishing a steady iiux through two portions of seid magnetic circuit in parallel, und a coil associated with said magnetic circuit for establishing e, Varying' flux: through said portions' in Series.
in testimony whereof, i have hereunto subscribed my naine this-17th ciay ci April, 1921i. v
LAWRENCE GLLADAY.
US708905A 1924-04-25 1924-04-25 Telephone receiver Expired - Lifetime US1588547A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US708905A US1588547A (en) 1924-04-25 1924-04-25 Telephone receiver

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US708905A US1588547A (en) 1924-04-25 1924-04-25 Telephone receiver

Publications (1)

Publication Number Publication Date
US1588547A true US1588547A (en) 1926-06-15

Family

ID=24847640

Family Applications (1)

Application Number Title Priority Date Filing Date
US708905A Expired - Lifetime US1588547A (en) 1924-04-25 1924-04-25 Telephone receiver

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2437270A (en) * 1943-11-05 1948-03-09 Bell Telephone Labor Inc Magnetostrictive compressional wave transmitter or receiver

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2437270A (en) * 1943-11-05 1948-03-09 Bell Telephone Labor Inc Magnetostrictive compressional wave transmitter or receiver

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