GB575731A - A relay responsive to sound waves - Google Patents
A relay responsive to sound wavesInfo
- Publication number
- GB575731A GB575731A GB7393/40A GB739340A GB575731A GB 575731 A GB575731 A GB 575731A GB 7393/40 A GB7393/40 A GB 7393/40A GB 739340 A GB739340 A GB 739340A GB 575731 A GB575731 A GB 575731A
- Authority
- GB
- United Kingdom
- Prior art keywords
- ring
- sound
- diaphragm
- april
- suspended
- 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
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H35/00—Switches operated by change of a physical condition
- H01H35/24—Switches operated by change of fluid pressure, by fluid pressure waves, or by change of fluid flow
- H01H35/34—Switches operated by change of fluid pressure, by fluid pressure waves, or by change of fluid flow actuated by diaphragm
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R23/00—Transducers other than those covered by groups H04R9/00 - H04R21/00
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
- Fluid Mechanics (AREA)
- Building Environments (AREA)
- Physical Water Treatments (AREA)
- Burglar Alarm Systems (AREA)
Abstract
575,731. Actuating apparatus by sound. BEAUVAIS, G., LEVY, J. C. MONYS-, and OPPENHEIMER, R. S. April 24, 1940, Nos. 7393 and 7394. Convention dates, April 25, 1939, and June 27, 1939. [Class 118 (ii)] [Also in Group XXXVII] Sound waves impinging on a diaphragm 5 set into vibration a blade 7 the end of which engages a broken ring 8 which is thereby caused to rotate. The blade 7 is tuned to a particular frequency and in the form shown, the ring 8 is suspended from it and on rotation one end of it will come into engagement with a contact 9. In a modification, Fig. 3 (not shown), the ring is suspended from two blades of different natural frequencies which are set in vibration by a wire frame connected to the diaphragm. The ring rotates one way or the other to close a corresponding circuit according to the nature of the sound falling on the diaphragm. Two relays responsive to different sounds may be connected in series so that the circuit is only completed when a particular compound sound, produced, e.g., by the voice, is emitted. The device may be applied to opening doors of garages by a hooter or to the opening of a safe by a key-phrase.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR861601T | 1939-04-25 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB575731A true GB575731A (en) | 1946-03-04 |
Family
ID=9340919
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB7393/40A Expired GB575731A (en) | 1939-04-25 | 1940-04-24 | A relay responsive to sound waves |
Country Status (2)
| Country | Link |
|---|---|
| FR (1) | FR861601A (en) |
| GB (1) | GB575731A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102014202932A1 (en) * | 2014-02-18 | 2015-08-20 | Robert Bosch Gmbh | Switching device for a battery, as well as battery with such a switching device |
-
1939
- 1939-04-25 FR FR861601D patent/FR861601A/en not_active Expired
-
1940
- 1940-04-24 GB GB7393/40A patent/GB575731A/en not_active Expired
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102014202932A1 (en) * | 2014-02-18 | 2015-08-20 | Robert Bosch Gmbh | Switching device for a battery, as well as battery with such a switching device |
| US10224531B2 (en) | 2014-02-18 | 2019-03-05 | Robert Bosch Gmbh | Switching device for a battery, and battery comprising said switching device |
Also Published As
| Publication number | Publication date |
|---|---|
| FR861601A (en) | 1941-02-13 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| GB411851A (en) | Improvements in and relating to sound or like air wave echo apparatus | |
| IT1061715B (en) | CENTRIFUGAL BLADE IMPELLER..PARTICULARLY FOR COMPRESSORS..and PROCEDURE FOR ITS MANUFACTURE | |
| GB575731A (en) | A relay responsive to sound waves | |
| FR2253443A5 (en) | Educational unit for severely deaf - uses coding each sound in emitted audio signal | |
| JPS523423A (en) | Cone type speaker | |
| SU98529A1 (en) | Impeller centrifugal submersible pump | |
| US1406042A (en) | Phonograph | |
| GB382249A (en) | Siren toy with sparking device | |
| GB501779A (en) | Improvements in or relating to a stammer remedying device | |
| SU61177A1 (en) | The method of determining the sign of the small difference of two frequencies | |
| FR800938A (en) | Electro-chemical recording device, particularly applicable to sound sounding devices | |
| GB201046A (en) | Improvements in ceiling mountings for electric fans | |
| GB259699A (en) | Improvements in loud speaking telephones | |
| GB262969A (en) | Improved dart board | |
| GB720617A (en) | Rotary fans | |
| GB301559A (en) | Improvements in or relating to acoustic devices | |
| GB192404A (en) | Diaphragms for acoustic apparatus | |
| GB244467A (en) | Means for determining the rate or frequency of rotation or of oscillation of a moving part | |
| GB320198A (en) | Improvements relating to sound producers such as loud speakers | |
| GB634875A (en) | Rotary sirens | |
| GB530851A (en) | Improvements in or relating to sirens | |
| FR882269A (en) | Device improving sound reproduction in loudspeaker installations | |
| GB275916A (en) | Improvements in or relating to door knockers | |
| GB302199A (en) | Improvements in, and relating to, acoustical horns | |
| CA376797A (en) | Light reflecting and sound transmitting screen |