GB830249A - Improvements in or relating to electrical equipments - Google Patents
Improvements in or relating to electrical equipmentsInfo
- Publication number
- GB830249A GB830249A GB1563157A GB1563157A GB830249A GB 830249 A GB830249 A GB 830249A GB 1563157 A GB1563157 A GB 1563157A GB 1563157 A GB1563157 A GB 1563157A GB 830249 A GB830249 A GB 830249A
- Authority
- GB
- United Kingdom
- Prior art keywords
- relating
- box
- electrical equipments
- detachable
- gramophone
- 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
- 239000004744 fabric Substances 0.000 abstract 1
- 238000005192 partition 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
- 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
- H04R1/28—Transducer mountings or enclosures modified by provision of mechanical or acoustic impedances, e.g. resonator, damping means
- H04R1/2807—Enclosures comprising vibrating or resonating arrangements
- H04R1/2811—Enclosures comprising vibrating or resonating arrangements for loudspeaker transducers
Abstract
830,249. Loud-speakers. GENERAL ELECTRIC CO. Ltd. May 14, 1958 [May 16, 1957], No. 15631/57. Class 13. [Also in Groups XXXIX and XL (c)] A portable radio or gramophone has detachable internal partitions 13 forming a Helmholtz resonator and supporting a transistor amplifier and other electrical equipment. An elliptical speaker 10 is flanked by apertures 11. The bottom of the box is detachable to assist servicing and the box is covered with fabric to damp resonances.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB1563157A GB830249A (en) | 1957-05-16 | 1957-05-16 | Improvements in or relating to electrical equipments |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB1563157A GB830249A (en) | 1957-05-16 | 1957-05-16 | Improvements in or relating to electrical equipments |
Publications (1)
Publication Number | Publication Date |
---|---|
GB830249A true GB830249A (en) | 1960-03-16 |
Family
ID=10062627
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB1563157A Expired GB830249A (en) | 1957-05-16 | 1957-05-16 | Improvements in or relating to electrical equipments |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB830249A (en) |
-
1957
- 1957-05-16 GB GB1563157A patent/GB830249A/en not_active Expired
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