FR2189970A1 - Acoustically insulating enclosures - comprising a cellulosic fibre shell lined with polyurethane foam - Google Patents

Acoustically insulating enclosures - comprising a cellulosic fibre shell lined with polyurethane foam

Info

Publication number
FR2189970A1
FR2189970A1 FR7222281A FR7222281A FR2189970A1 FR 2189970 A1 FR2189970 A1 FR 2189970A1 FR 7222281 A FR7222281 A FR 7222281A FR 7222281 A FR7222281 A FR 7222281A FR 2189970 A1 FR2189970 A1 FR 2189970A1
Authority
FR
France
Prior art keywords
polyurethane foam
cellulosic fibre
lined
acoustically insulating
shell lined
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.)
Granted
Application number
FR7222281A
Other languages
English (en)
French (fr)
Other versions
FR2189970B3 (enrdf_load_stackoverflow
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.)
CARTONNAGE STE ENERALE
Original Assignee
CARTONNAGE STE ENERALE
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 CARTONNAGE STE ENERALE filed Critical CARTONNAGE STE ENERALE
Priority to FR7222281A priority Critical patent/FR2189970A1/fr
Publication of FR2189970A1 publication Critical patent/FR2189970A1/fr
Application granted granted Critical
Publication of FR2189970B3 publication Critical patent/FR2189970B3/fr
Granted 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
    • H04R1/02—Casings; Cabinets ; Supports therefor; Mountings therein
    • H04R1/021—Casings; Cabinets ; Supports therefor; Mountings therein incorporating only one transducer

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Building Environments (AREA)
FR7222281A 1972-06-16 1972-06-16 Acoustically insulating enclosures - comprising a cellulosic fibre shell lined with polyurethane foam Granted FR2189970A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR7222281A FR2189970A1 (en) 1972-06-16 1972-06-16 Acoustically insulating enclosures - comprising a cellulosic fibre shell lined with polyurethane foam

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7222281A FR2189970A1 (en) 1972-06-16 1972-06-16 Acoustically insulating enclosures - comprising a cellulosic fibre shell lined with polyurethane foam

Publications (2)

Publication Number Publication Date
FR2189970A1 true FR2189970A1 (en) 1974-01-25
FR2189970B3 FR2189970B3 (enrdf_load_stackoverflow) 1975-08-08

Family

ID=9100520

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7222281A Granted FR2189970A1 (en) 1972-06-16 1972-06-16 Acoustically insulating enclosures - comprising a cellulosic fibre shell lined with polyurethane foam

Country Status (1)

Country Link
FR (1) FR2189970A1 (enrdf_load_stackoverflow)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4127751A (en) * 1975-11-27 1978-11-28 Pioneer Electronic Corporation Loudspeaker with rigid foamed back-cavity
US4796726A (en) * 1984-05-29 1989-01-10 Nissan Motor Co., Ltd. Ultrasonic rangefinder

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4127751A (en) * 1975-11-27 1978-11-28 Pioneer Electronic Corporation Loudspeaker with rigid foamed back-cavity
US4796726A (en) * 1984-05-29 1989-01-10 Nissan Motor Co., Ltd. Ultrasonic rangefinder

Also Published As

Publication number Publication date
FR2189970B3 (enrdf_load_stackoverflow) 1975-08-08

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Legal Events

Date Code Title Description
ST Notification of lapse