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; ELECTRIC HEARING AIDS; 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; ELECTRIC HEARING AIDS; 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; ELECTRIC HEARING AIDS; 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; ELECTRIC HEARING AIDS; 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; ELECTRIC HEARING AIDS; PUBLIC ADDRESS SYSTEMS
- H04R7/00—Diaphragms for electromechanical transducers; Cones
- H04R7/02—Diaphragms for electromechanical transducers; Cones characterised by the construction
- H04R7/12—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; ELECTRIC HEARING AIDS; PUBLIC ADDRESS SYSTEMS
- H04R7/00—Diaphragms for electromechanical transducers; Cones
- H04R7/02—Diaphragms for electromechanical transducers; Cones characterised by the construction
- H04R7/12—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; ELECTRIC HEARING AIDS; 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; ELECTRIC HEARING AIDS; 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; ELECTRIC HEARING AIDS; 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; ELECTRIC HEARING AIDS; 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; ELECTRIC HEARING AIDS; 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)
Electromechanical Clocks (AREA)
Electrostatic, Electromagnetic, Magneto- Strictive, And Variable-Resistance Transducers (AREA)
Diaphragms For Electromechanical Transducers (AREA)

BE331748D 1925-01-09 BE331748A (mo)

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 (mo)

Family

ID=21696234

Family Applications (2)

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

Family Applications Before (1)

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

Country Status (5)

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

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 (fr) *	2003-02-10	2008-01-25	Patrick Hoffmann	Transducteur acoustique generant un rayonnement sonore par compression et expansion d'une masse d'air situee entre une membrane mobile et une surface fixe ou entre deux membranes mobiles
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 (zh) *	2011-01-12	2013-07-24	常州声泰龙电子音响有限公司	扬声器及其振动部件
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/de not_active Expired
1926
- 1926-01-07 FR FR610959D patent/FR610959A/fr 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/fr not_active Expired
- 1928-11-29 FR FR36325D patent/FR36325E/fr not_active Expired
- 1928-12-01 FR FR36705D patent/FR36705E/fr not_active Expired
1929
- 1929-02-16 FR FR37084D patent/FR37084E/fr not_active Expired
- 1929-02-19 FR FR37086D patent/FR37086E/fr not_active Expired
1933
- 1933-01-21 FR FR43362D patent/FR43362E/fr not_active Expired
- 1933-04-26 FR FR43759D patent/FR43759E/fr not_active Expired
1934
- 1934-12-27 FR FR46228D patent/FR46228E/fr not_active Expired

Also Published As

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

Publication	Publication Date	Title
AT108862B (mo)	1928-02-10
BE331838A (mo)	1926-02-27
AT107490B (mo)	1927-10-10
AT108975B (mo)	1928-02-25
AT108642B (mo)	1928-01-25
FR587406A (mo)	1925-04-17
AT108056B (mo)	1927-11-25
FR598536A (mo)	1925-12-18
AT108864B (mo)	1928-02-10
AT108860B (mo)	1928-02-10
FR597131A (mo)	1925-11-13
AT99321B (mo)	1925-02-25
FR588126A (mo)	1925-04-30
FR588781A (mo)	1925-05-15
BE330611A (mo)	1925-12-31
BE325119A (mo)	1925-06-19
BE329122A (mo)	1925-10-15
BE331402A (mo)
BE331413A (mo)
BE331977A (mo)
BE331482A (mo)
BE331348A (mo)
BE333715A (mo)
BE331938A (mo)
BE331444A (mo)