GB283211A - Loud speaker - Google Patents
Loud speakerInfo
- Publication number
- GB283211A GB283211A GB32/28A GB3228A GB283211A GB 283211 A GB283211 A GB 283211A GB 32/28 A GB32/28 A GB 32/28A GB 3228 A GB3228 A GB 3228A GB 283211 A GB283211 A GB 283211A
- Authority
- GB
- United Kingdom
- Prior art keywords
- diaphragm
- sound
- board
- hopkins
- diaphragms
- 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
- 238000007689 inspection Methods 0.000 abstract 1
Classifications
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
- Diaphragms For Electromechanical Transducers (AREA)
Abstract
283,211. Hopkins Corporation, (Assignees of Hopkins, M. C.). Jan. 7, 1927, [Convention date]. Diaphragms.-Relates to diaphragms for loudspeakers, more particularly of the kind described in Specification 263,481 in which a central conical paper diaphragm 1 is flexibly connected with a sound-board 3, the diaphragm 1 reproducing the high frequencies whilst the low frequencies are transmitted through the flexible connection and reproduced by the sound-board. According to the invention, in order to prevent any tendency for the diaphragm to become distorted at points adjacent its outer edge so that the low frequencies are inaccurately transmitted to the sound-board, one or more ring-like members 4 are secured edgewise and preferably at right angles to the diaphragm 1 either on the inside as shown or on the outside. The Specification as open to inspection under Sect. 91 (3) (a) comprises also a flat diaphragm reinforced by one or more ring-like members. This subject-matter does not appear in the Specification as accepted.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US159554A US1763054A (en) | 1927-01-07 | 1927-01-07 | Loud-speaker |
Publications (1)
Publication Number | Publication Date |
---|---|
GB283211A true GB283211A (en) | 1928-06-28 |
Family
ID=22573035
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB32/28A Expired GB283211A (en) | 1927-01-07 | 1928-01-02 | Loud speaker |
Country Status (4)
Country | Link |
---|---|
US (1) | US1763054A (en) |
BE (1) | BE347740A (en) |
FR (1) | FR646684A (en) |
GB (1) | GB283211A (en) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3114429A (en) * | 1961-01-16 | 1963-12-17 | Hoffman Electronics Corp | Loudspeaker |
-
0
- BE BE347740D patent/BE347740A/xx unknown
-
1927
- 1927-01-07 US US159554A patent/US1763054A/en not_active Expired - Lifetime
-
1928
- 1928-01-02 GB GB32/28A patent/GB283211A/en not_active Expired
- 1928-01-03 FR FR646684D patent/FR646684A/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
BE347740A (en) | |
FR646684A (en) | 1928-11-14 |
US1763054A (en) | 1930-06-10 |
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