FR803755A - Improvements to loudspeakers and analog devices - Google Patents
Improvements to loudspeakers and analog devicesInfo
- Publication number
- FR803755A FR803755A FR803755DA FR803755A FR 803755 A FR803755 A FR 803755A FR 803755D A FR803755D A FR 803755DA FR 803755 A FR803755 A FR 803755A
- Authority
- FR
- France
- Prior art keywords
- loudspeakers
- analog devices
- analog
- devices
- 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
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
- H04R9/00—Transducers of moving-coil, moving-strip, or moving-wire type
- H04R9/02—Details
- H04R9/025—Magnetic circuit
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T29/00—Metal working
- Y10T29/49—Method of mechanical manufacture
- Y10T29/49002—Electrical device making
- Y10T29/49005—Acoustic transducer
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T29/00—Metal working
- Y10T29/49—Method of mechanical manufacture
- Y10T29/49002—Electrical device making
- Y10T29/4902—Electromagnet, transformer or inductor
- Y10T29/49075—Electromagnet, transformer or inductor including permanent magnet or core
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T29/00—Metal working
- Y10T29/49—Method of mechanical manufacture
- Y10T29/49826—Assembling or joining
- Y10T29/49908—Joining by deforming
- Y10T29/49938—Radially expanding part in cavity, aperture, or hollow body
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
- Audible-Bandwidth Dynamoelectric Transducers Other Than Pickups (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US61883A US2174355A (en) | 1936-02-01 | 1936-02-01 | Loudspeaker and method of making same |
Publications (1)
Publication Number | Publication Date |
---|---|
FR803755A true FR803755A (en) | 1936-10-08 |
Family
ID=22038753
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR803755D Expired FR803755A (en) | 1936-02-01 | 1936-03-20 | Improvements to loudspeakers and analog devices |
Country Status (3)
Country | Link |
---|---|
US (1) | US2174355A (en) |
FR (1) | FR803755A (en) |
GB (1) | GB475839A (en) |
Families Citing this family (15)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2524780A (en) * | 1945-07-07 | 1950-10-10 | Rola Company Inc | Pole piece centering arrangement for permanent magnet electrodynamic loudspeakers |
US2501031A (en) * | 1945-11-30 | 1950-03-21 | Rca Corp | Magnetic field structure for dynamic loud-speakers and the like |
GB625591A (en) * | 1947-03-04 | 1949-06-30 | Paul Gustavus Adolphus Helmuth | Improvements in magnets |
US2524836A (en) * | 1947-04-02 | 1950-10-10 | Rola Company Inc | Permanent magnet electrodynamic loud-speaker |
US2666980A (en) * | 1947-04-02 | 1954-01-26 | Rola Company Inc | Method of making loud-speakers |
US2551949A (en) * | 1947-04-19 | 1951-05-08 | Robert C Hunter | Loud-speaker |
GB686743A (en) * | 1947-08-27 | 1953-01-28 | Magnavox Australia Pty Ltd | Improvements in loud speakers |
US2522859A (en) * | 1948-01-30 | 1950-09-19 | Gordon S Carbonneau | Electrodynamic loudspeaker and mounting therefor |
US2838607A (en) * | 1951-04-27 | 1958-06-10 | Rca Corp | Combination chassis and loudspeaker |
DE1036923B (en) * | 1954-06-11 | 1958-08-21 | Isophon Werke Ges Mit Beschrae | Attachment of the membrane basket for conical speakers |
US3092694A (en) * | 1959-02-16 | 1963-06-04 | Rca Corp | Loudspeaker |
US3222753A (en) * | 1959-05-18 | 1965-12-14 | Heppner Mfg Co | Speaker magnet structure and method of forming the same |
US3128355A (en) * | 1959-10-19 | 1964-04-07 | Western Electric Co | Plastic relay structure and method of making |
US3310639A (en) * | 1964-01-23 | 1967-03-21 | York Tool And Mfg Co | Loud speaker magnetic assembly and pot |
US5345209A (en) * | 1992-07-30 | 1994-09-06 | Tdk Corporation | Adjustment system for a coil device |
-
1936
- 1936-02-01 US US61883A patent/US2174355A/en not_active Expired - Lifetime
- 1936-03-20 FR FR803755D patent/FR803755A/en not_active Expired
- 1936-12-09 GB GB33844/36A patent/GB475839A/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
GB475839A (en) | 1937-11-26 |
US2174355A (en) | 1939-09-26 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
FR840719A (en) | Improvements to elastic assemblies | |
FR803755A (en) | Improvements to loudspeakers and analog devices | |
FR791384A (en) | Improvements to loudspeakers and similar devices | |
FR828977A (en) | Improvements to projection devices | |
FR791719A (en) | Improvements to loudspeakers and similar instruments | |
FR772324A (en) | Improvements to clocks and similar devices | |
FR808706A (en) | Improvements to cover letters and the like | |
FR856489A (en) | Improvements to rest chairs and similar | |
FR48334E (en) | Improvements to electrodynamic or analog loudspeakers | |
FR825089A (en) | Improvements to captive flying devices | |
FR715389A (en) | Improvements to speakers and analog devices | |
FR709205A (en) | Improvements to speakers and analog devices | |
FR818847A (en) | Improvements to bathtubs and similar devices | |
FR858268A (en) | Improvements to electro-acoustic transmitters and similar devices | |
FR859323A (en) | Improvements to atomizers and similar devices | |
FR822765A (en) | Improvements to stereographometers | |
FR806613A (en) | Improvements to recording devices | |
FR855072A (en) | Improvements to norias and similar lifting devices | |
FR858734A (en) | Improvements to electro-medical devices | |
FR818097A (en) | Improvement to pants and the like | |
FR864648A (en) | Improvements to winches and similar devices | |
FR726866A (en) | Improvements to switches and similar devices | |
FR817259A (en) | Improvements to telephone devices | |
FR818999A (en) | Improvements to telephone devices | |
FR819507A (en) | Improvements to cathode ray oscillographs and similar devices |