GB256252A - Improvements in acoustic diaphragms - Google Patents

Improvements in acoustic diaphragms

Info

Publication number
GB256252A
GB256252A GB18949/26A GB1894926A GB256252A GB 256252 A GB256252 A GB 256252A GB 18949/26 A GB18949/26 A GB 18949/26A GB 1894926 A GB1894926 A GB 1894926A GB 256252 A GB256252 A GB 256252A
Authority
GB
United Kingdom
Prior art keywords
diaphragm
ridge
edges
diaphragms
acoustic diaphragms
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
GB18949/26A
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 GB256252A publication Critical patent/GB256252A/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
    • H04R7/00—Diaphragms for electromechanical transducers; Cones
    • H04R7/02—Diaphragms for electromechanical transducers; Cones characterised by the construction
    • H04R7/12—Non-planar diaphragms or cones
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R7/00—Diaphragms for electromechanical transducers; Cones
    • H04R7/16—Mounting or tensioning of diaphragms or cones
    • H04R7/18—Mounting or tensioning of diaphragms or cones at the periphery
    • H04R7/22—Clamping rim of diaphragm or cone against seating

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Diaphragms For Electromechanical Transducers (AREA)

Abstract

256,252. Lumiere, L. Aug. 1, 1925, [Convention date]. Diaphragms.-An acoustic diaphragm is formed by two curved parts a<2>, a connected together along a ridge, is fixed to a supporting frame c, c<1> by only two of the opposite parallel edges, and is placed in vibration from a point s on the ridge. The diaphragm is formed by a rectangular sheet of paper, cardboard, wood metal, or the like folded in two and then unfolded or by two similar sheets connected along one of their edges by a pasted mitre piece d. The diaphragm may be striated longitudinally.
GB18949/26A 1925-08-01 1926-07-29 Improvements in acoustic diaphragms Expired GB256252A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR613906T 1925-08-01
FR31494T 1925-09-28

Publications (1)

Publication Number Publication Date
GB256252A true GB256252A (en) 1927-01-27

Family

ID=26182618

Family Applications (2)

Application Number Title Priority Date Filing Date
GB18949/26A Expired GB256252A (en) 1925-08-01 1926-07-29 Improvements in acoustic diaphragms
GB19033/26A Expired GB258842A (en) 1925-08-01 1926-07-30 Improvements in acoustic diaphragms

Family Applications After (1)

Application Number Title Priority Date Filing Date
GB19033/26A Expired GB258842A (en) 1925-08-01 1926-07-30 Improvements in acoustic diaphragms

Country Status (2)

Country Link
FR (2) FR613906A (en)
GB (2) GB256252A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0077228A2 (en) * 1981-09-17 1983-04-20 Tadashi Sawafuji Electroacoustic transducer

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0077228A2 (en) * 1981-09-17 1983-04-20 Tadashi Sawafuji Electroacoustic transducer
EP0077228A3 (en) * 1981-09-17 1983-06-01 Tadashi Sawafuji Electroacoustic transducer

Also Published As

Publication number Publication date
FR613906A (en) 1926-12-02
GB258842A (en) 1927-01-27
FR31494E (en) 1927-03-14

Similar Documents

Publication Publication Date Title
GB256252A (en) Improvements in acoustic diaphragms
GB634295A (en) An improved show card or the like and method of manufacture thereof
GB344290A (en) Improvements in or relating to acoustic diaphragms
FR618185A (en) Improvements in the production of sheets of paper and coated cardboard
GB232234A (en) Improvements in the process of producing transparent windows in paper, cardboard and the like
GB315578A (en) Improvements in and relating to diaphragms for acoustic devices
GB256963A (en) Improvements in or relating to acoustic devices
GB187096A (en) Improvements in or relating to letter sheets
GB143765A (en) Improvements in picture frames
GB328260A (en) Improvements in or relating to laminated structures
GB328491A (en) Paper bag
AU161826A (en) Improvements in or relating to diaphragms for acoustic instruments
GB244404A (en)
AU2645130A (en) Improvements in or relating to acoustic diaphragms
GB322083A (en) Improvements in diaphragms for loud-speakers and the like
GB347042A (en) Improvements in multicopying device
GB438872A (en) Improvements in and relating to apparatus for display purposes
AU360926A (en) Improvements in or relating&#34; to paper or like sheet folding machines
GB272379A (en) Improvements in or relating to advertising devices
GR3989B (en) PERFECTIONS IN CARDBOARD BOXES OR PAPER RECEIVERS AND SIMILAR.
GB274087A (en) Improvements in advertising posters and the like
ES33315U (en) Advertising container for palllos (Machine-translation by Google Translate, not legally binding)
GB410416A (en) Improvements in paper blanks for forming postcards
GB178908A (en) Improvements in display-cards and the like
GB342768A (en) Improvements in or relating to acoustic horns