GB670164A - Improvements in or relating to telephone receivers - Google Patents

Improvements in or relating to telephone receivers

Info

Publication number
GB670164A
GB670164A GB241450A GB241450A GB670164A GB 670164 A GB670164 A GB 670164A GB 241450 A GB241450 A GB 241450A GB 241450 A GB241450 A GB 241450A GB 670164 A GB670164 A GB 670164A
Authority
GB
United Kingdom
Prior art keywords
terminals
relating
plates
receiver
contact
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
GB241450A
Inventor
Joachim Wolff
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
Priority to GB241450A priority Critical patent/GB670164A/en
Publication of GB670164A publication Critical patent/GB670164A/en
Expired legal-status Critical Current

Links

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

Landscapes

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

Abstract

670,164. Instruments for deaf persons. FORTIPHONE, Ltd. Jan. 30, 1950, No. 2414/50. Class 40 (iv). A miniature telephone receiver, e.g. a deafaid, consists of the receiver proper, Fig. 1, having terminals M3 with enlarged heads M4, and a casing unit, Figs. 4, 5, in which is fixed a plate C4 having arcuate key-hole slots C5 and contact plates C2 to which the cord leads are attached, the casing unit being secured to the receiver proper by engagement of the terminals in the slots, the terminals then being in contact with the contact plates C2. Holes C7 in the plates C2 serve as detents for the terminal heads M4.
GB241450A 1950-01-30 1950-01-30 Improvements in or relating to telephone receivers Expired GB670164A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB241450A GB670164A (en) 1950-01-30 1950-01-30 Improvements in or relating to telephone receivers

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB241450A GB670164A (en) 1950-01-30 1950-01-30 Improvements in or relating to telephone receivers

Publications (1)

Publication Number Publication Date
GB670164A true GB670164A (en) 1952-04-16

Family

ID=9739139

Family Applications (1)

Application Number Title Priority Date Filing Date
GB241450A Expired GB670164A (en) 1950-01-30 1950-01-30 Improvements in or relating to telephone receivers

Country Status (1)

Country Link
GB (1) GB670164A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1152148B (en) * 1959-06-30 1963-08-01 Akustische Headphone

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1152148B (en) * 1959-06-30 1963-08-01 Akustische Headphone

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