GB228871A - Improvements in and relating to ear pieces - Google Patents

Improvements in and relating to ear pieces

Info

Publication number
GB228871A
GB228871A GB1289/25A GB128925A GB228871A GB 228871 A GB228871 A GB 228871A GB 1289/25 A GB1289/25 A GB 1289/25A GB 128925 A GB128925 A GB 128925A GB 228871 A GB228871 A GB 228871A
Authority
GB
United Kingdom
Prior art keywords
opening
relating
ear pieces
ear
lindemann
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
GB1289/25A
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
Publication of GB228871A publication Critical patent/GB228871A/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
    • H04R1/00—Details of transducers, loudspeakers or microphones
    • H04R1/10—Earpieces; Attachments therefor ; Earphones; Monophonic headphones
    • H04R1/1008—Earpieces of the supra-aural or circum-aural type

Landscapes

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

Abstract

228,871. Lindemann, B. Feb. 6, 1924, [Convention date]. Void [Published under Sect. 91 of the Act]. Earpieces.-Discomfort to the ear in the prolonged use of a telephone receiver is prevented by the provision of a. hollow member of soft resilient material such as sponge rubber with an opening 13 at one side to enable it to be slipped over the earpiece 16 and an opening 14 at the other side for sound emission. The material may be in one piece or in two pieces cemented or otherwise joined together along the central plane 12.
GB1289/25A 1924-02-06 1925-01-15 Improvements in and relating to ear pieces Expired GB228871A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE228871X 1924-02-06

Publications (1)

Publication Number Publication Date
GB228871A true GB228871A (en) 1926-05-14

Family

ID=5867452

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1289/25A Expired GB228871A (en) 1924-02-06 1925-01-15 Improvements in and relating to ear pieces

Country Status (1)

Country Link
GB (1) GB228871A (en)

Cited By (1)

* 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

Cited By (1)

* 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

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