DE430435C - Membran - Google Patents

Membran

Info

Publication number
DE430435C
DE430435C DER58770D DER0058770D DE430435C DE 430435 C DE430435 C DE 430435C DE R58770 D DER58770 D DE R58770D DE R0058770 D DER0058770 D DE R0058770D DE 430435 C DE430435 C DE 430435C
Authority
DE
Germany
Prior art keywords
membrane
celluloid
discs
shellac
intermediate layer
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
DER58770D
Other languages
German (de)
English (en)
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.)
RADIOTIVE CORP
Original Assignee
RADIOTIVE 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 RADIOTIVE CORP filed Critical RADIOTIVE CORP
Application granted granted Critical
Publication of DE430435C publication Critical patent/DE430435C/de
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; ELECTRIC HEARING AIDS; PUBLIC ADDRESS SYSTEMS
    • H04R7/00—Diaphragms for electromechanical transducers; Cones
    • H04R7/02—Diaphragms for electromechanical transducers; Cones characterised by the construction
    • H04R7/04—Plane diaphragms
    • H04R7/06—Plane diaphragms comprising a plurality of sections or layers
    • H04R7/10—Plane diaphragms comprising a plurality of sections or layers comprising superposed layers in contact

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Diaphragms For Electromechanical Transducers (AREA)
DER58770D 1923-06-20 1923-06-23 Membran Expired DE430435C (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB16046/23A GB222180A (en) 1923-06-20 1923-06-20 Improvements relating to diaphragms

Publications (1)

Publication Number Publication Date
DE430435C true DE430435C (de) 1926-06-18

Family

ID=10070144

Family Applications (1)

Application Number Title Priority Date Filing Date
DER58770D Expired DE430435C (de) 1923-06-20 1923-06-23 Membran

Country Status (5)

Country Link
US (1) US1646261A (https=)
DE (1) DE430435C (https=)
FR (1) FR568290A (https=)
GB (1) GB222180A (https=)
NL (1) NL13657C (https=)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3020971A (en) * 1962-02-13 Cefaly
AT304162B (de) * 1969-12-18 1972-12-27 Ciba Geigy Ag Stabilisierung von pestiziden Phosphorsäureestern
GB2169471A (en) * 1985-01-04 1986-07-09 Anthony Bernard Clarke Acoustic diaphragm

Also Published As

Publication number Publication date
FR568290A (fr) 1924-03-21
NL13657C (https=) 1925-09-15
US1646261A (en) 1927-10-18
GB222180A (en) 1924-09-22

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