CA958340A - High security loud speaker baffle - Google Patents

High security loud speaker baffle

Info

Publication number
CA958340A
CA958340A CA157,972A CA157972A CA958340A CA 958340 A CA958340 A CA 958340A CA 157972 A CA157972 A CA 157972A CA 958340 A CA958340 A CA 958340A
Authority
CA
Canada
Prior art keywords
loud speaker
high security
speaker baffle
baffle
security
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
CA157,972A
Other versions
CA157972S (en
Inventor
Josef H. Hammes
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.)
Lowell Manufacturing Co
Original Assignee
Lowell Manufacturing Co
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 Lowell Manufacturing Co filed Critical Lowell Manufacturing Co
Application granted granted Critical
Publication of CA958340A publication Critical patent/CA958340A/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
    • H04R1/02—Casings; Cabinets ; Supports therefor; Mountings therein
    • H04R1/023—Screens for loudspeakers
    • 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)
  • Details Of Audible-Bandwidth Transducers (AREA)
CA157,972A 1971-12-16 1972-12-04 High security loud speaker baffle Expired CA958340A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US20877971A 1971-12-16 1971-12-16

Publications (1)

Publication Number Publication Date
CA958340A true CA958340A (en) 1974-11-26

Family

ID=22776034

Family Applications (1)

Application Number Title Priority Date Filing Date
CA157,972A Expired CA958340A (en) 1971-12-16 1972-12-04 High security loud speaker baffle

Country Status (2)

Country Link
US (1) US3731760A (en)
CA (1) CA958340A (en)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3853292A (en) * 1973-02-01 1974-12-10 Chamois Electronic Mfg Co Inc Mounting bracket
US4230907A (en) * 1976-02-24 1980-10-28 Braun Aktiengesellschaft Dynamic loudspeaker able to be driven at increased steady power
US4071111A (en) * 1976-04-28 1978-01-31 Acoustic Fiber Sound Systems, Inc. Weatherproof loudspeaker assembly and method of making same
US4196791A (en) * 1978-01-06 1980-04-08 Motorola, Inc. Speaker grill including stress regions
US4889208A (en) * 1987-02-23 1989-12-26 Katsutoshi Sugihara Speaker enclosures
US4993676A (en) * 1990-01-16 1991-02-19 Fitts William E Apparatus for supporting a television set from a ceiling
US5135197A (en) * 1990-08-30 1992-08-04 Qualtec Data Products, Inc. Equipment security method and apparatus
DE10013283B4 (en) * 2000-03-17 2004-01-29 Rittal Gmbh & Co. Kg Support arm
JP3966222B2 (en) * 2003-05-09 2007-08-29 株式会社村田製作所 Speaker housing and speaker device

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2718931A (en) * 1952-11-28 1955-09-27 Boudouris Angelo Loud speaker for outdoor theaters
US2821260A (en) * 1956-06-28 1958-01-28 Shaffer Music Company Built-in sound system for home
US2829728A (en) * 1956-11-09 1958-04-08 Ballantyne Company Protective cone assembly for loud speakers
US2949163A (en) * 1957-05-06 1960-08-16 Soundolier Inc Loudspeaker baffle assembly

Also Published As

Publication number Publication date
US3731760A (en) 1973-05-08

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