BE331748A - - Google Patents

Info

Publication number: BE331748A
Authority: BE; Belgium

Application number

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.)

1925-01-09

Publication of BE331748A publication Critical patent/BE331748A/xx

Classifications

- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R9/00—Transducers of moving-coil, moving-strip, or moving-wire type
- H04R9/02—Details
- H04R9/025—Magnetic circuit
- 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
- H04R1/20—Arrangements for obtaining desired frequency or directional characteristics
- H04R1/22—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired frequency characteristic only
- H04R1/24—Structural combinations of separate transducers or of two parts of the same transducer and responsive respectively to two or more frequency ranges
- 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
- H04R1/20—Arrangements for obtaining desired frequency or directional characteristics
- H04R1/32—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired directional characteristic only
- H04R1/34—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired directional characteristic only by using a single transducer with sound reflecting, diffracting, directing or guiding means
- H04R1/345—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired directional characteristic only by using a single transducer with sound reflecting, diffracting, directing or guiding means 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
- H04R11/00—Transducers of moving-armature or moving-core type
- H04R11/02—Loudspeakers
- 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
- H04R7/122—Non-planar diaphragms or cones comprising a plurality of sections or layers
- 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
- H04R7/14—Non-planar diaphragms or cones corrugated, pleated or ribbed
- 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
- H04R7/20—Securing diaphragm or cone resiliently to support by flexible material, springs, cords, or strands
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R9/00—Transducers of moving-coil, moving-strip, or moving-wire type
- H04R9/02—Details
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R9/00—Transducers of moving-coil, moving-strip, or moving-wire type
- H04R9/02—Details
- H04R9/04—Construction, mounting, or centering of coil
- H04R9/041—Centering
- H04R9/042—Centering by pressurised air
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R9/00—Transducers of moving-coil, moving-strip, or moving-wire type
- H04R9/02—Details
- H04R9/04—Construction, mounting, or centering of coil
- H04R9/045—Mounting
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R9/00—Transducers of moving-coil, moving-strip, or moving-wire type
- H04R9/06—Loudspeakers
- H04R9/063—Loudspeakers using a plurality of acoustic drivers

Landscapes

Engineering & Computer Science (AREA)
Physics & Mathematics (AREA)
Acoustics & Sound (AREA)
Signal Processing (AREA)
Health & Medical Sciences (AREA)
Otolaryngology (AREA)
Multimedia (AREA)
Electromagnetism (AREA)
Audible-Bandwidth Dynamoelectric Transducers Other Than Pickups (AREA)
Electrostatic, Electromagnetic, Magneto- Strictive, And Variable-Resistance Transducers (AREA)
Electromechanical Clocks (AREA)
Diaphragms For Electromechanical Transducers (AREA)

BE331748D 1925-01-09 BE331748A (en)

Applications Claiming Priority (1)

Application Number	Priority Date	Filing Date	Title
US1483A US1707617A (en)	1925-01-09	1925-01-09	Sound-reproducing apparatus

Publications (1)

Publication Number	Publication Date
BE331748A true BE331748A (en)

Family

ID=21696234

Family Applications (2)

Application Number	Title	Priority Date	Filing Date
BE356544D BE356544A (en)	1925-01-09
BE331748D BE331748A (en)	1925-01-09

Family Applications Before (1)

Application Number	Title	Priority Date	Filing Date
BE356544D BE356544A (en)	1925-01-09

Country Status (5)

Country	Link
US (1)	US1707617A (en)
BE (2)	BE331748A (en)
DE (1)	DE548195C (en)
FR (9)	FR610959A (en)
GB (2)	GB245796A (en)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
US2498825A (en) *	1943-09-15	1950-02-28	Hartford Nat Bank & Trust Comp	Moving coil transducer and enclosure
US2547565A (en) *	1946-09-26	1951-04-03	Wright Zimmerman Inc	Speaker having a tubular pot
US6639994B1 (en)	2000-08-16	2003-10-28	Jl Audio, Inc.	Loudspeaker having adjustable motor strength
FR2851115B1 (en) *	2003-02-10	2008-01-25	Patrick Hoffmann	ACOUSTIC TRANSDUCER GENERATING SOUND RADIATION BY COMPRESSION AND EXPANSION OF AIR MASS SITUATED BETWEEN A MOBILE MEMBRANE AND A FIXED SURFACE OR BETWEEN TWO MOBILE MEMBRANES
US8295537B2 (en)	2010-03-31	2012-10-23	Bose Corporation	Loudspeaker moment and torque balancing
US8295536B2 (en)	2010-03-31	2012-10-23	Bose Corporation	Moving magnet levered loudspeaker
CN102026067B (en) *	2011-01-12	2013-07-24	常州声泰龙电子音响有限公司	Loudspeaker and vibration part thereof
US9055370B2 (en)	2012-08-31	2015-06-09	Bose Corporation	Vibration-reducing passive radiators

0
- BE BE356544D patent/BE356544A/fr unknown
- BE BE331748D patent/BE331748A/xx unknown
1925
- 1925-01-09 US US1483A patent/US1707617A/en not_active Expired - Lifetime
- 1925-06-13 DE DER64584D patent/DE548195C/en not_active Expired
1926
- 1926-01-07 FR FR610959D patent/FR610959A/en not_active Expired
- 1926-01-09 GB GB704/26A patent/GB245796A/en not_active Expired
1927
- 1927-11-30 GB GB32252/27A patent/GB310759A/en not_active Expired
1928
- 1928-07-11 FR FR35605D patent/FR35605E/en not_active Expired
- 1928-11-29 FR FR36325D patent/FR36325E/en not_active Expired
- 1928-12-01 FR FR36705D patent/FR36705E/en not_active Expired
1929
- 1929-02-16 FR FR37084D patent/FR37084E/en not_active Expired
- 1929-02-19 FR FR37086D patent/FR37086E/en not_active Expired
1933
- 1933-01-21 FR FR43362D patent/FR43362E/en not_active Expired
- 1933-04-26 FR FR43759D patent/FR43759E/en not_active Expired
1934
- 1934-12-27 FR FR46228D patent/FR46228E/en not_active Expired

Also Published As

Publication number	Publication date
US1707617A (en)	1929-04-02
BE356544A (en)
FR46228E (en)	1936-04-02
FR610959A (en)	1926-08-17
GB245796A (en)	1927-04-11
FR36705E (en)	1930-09-03
FR35605E (en)	1930-03-26
FR36325E (en)	1930-05-08
FR43362E (en)	1934-05-11
FR43759E (en)	1934-08-29
GB310759A (en)	1929-04-30
FR37084E (en)	1930-10-15
FR37086E (en)	1930-10-15
DE548195C (en)	1932-04-08

Publication	Publication Date	Title
AT108862B (en)	1928-02-10
AT107490B (en)	1927-10-10
BE331838A (en)	1926-02-27
AT108056B (en)	1927-11-25
AT108642B (en)	1928-01-25
AT108860B (en)	1928-02-10
AT108864B (en)	1928-02-10
AT99321B (en)	1925-02-25
BE325119A (en)	1925-06-19
BE329122A (en)	1925-10-15
BE330611A (en)	1925-12-31
BE331135A (en)	1925-12-31
BE331453A (en)
BE331583A (en)
BE252855A (en)
BE254316A (en)
BE256737A (en)
BE268047A (en)
BE328518A (en)
BE330822A (en)
BE331348A (en)
BE331402A (en)
BE331413A (en)
BE331444A (en)
BE248750A (en)