GB2079511B - Sound generator - Google Patents
Sound generatorInfo
- Publication number
- GB2079511B GB2079511B GB8020721A GB8020721A GB2079511B GB 2079511 B GB2079511 B GB 2079511B GB 8020721 A GB8020721 A GB 8020721A GB 8020721 A GB8020721 A GB 8020721A GB 2079511 B GB2079511 B GB 2079511B
- Authority
- GB
- United Kingdom
- Prior art keywords
- sound generator
- sound
- generator
- 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
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21C—MINING OR QUARRYING
- E21C35/00—Details of, or accessories for, machines for slitting or completely freeing the mineral from the seam, not provided for in groups E21C25/00 - E21C33/00, E21C37/00 or E21C39/00
- E21C35/22—Equipment for preventing the formation of, or for removal of, dust
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21F—SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
- E21F17/00—Methods or devices for use in mines or tunnels, not covered elsewhere
- E21F17/18—Special adaptations of signalling or alarm devices
-
- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
- G10K9/00—Devices in which sound is produced by vibrating a diaphragm or analogous element, e.g. fog horns, vehicle hooters or buzzers
- G10K9/10—Devices in which sound is produced by vibrating a diaphragm or analogous element, e.g. fog horns, vehicle hooters or buzzers driven by mechanical means only
Landscapes
- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Multimedia (AREA)
- Hydraulic Turbines (AREA)
- Reciprocating Pumps (AREA)
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB8020721A GB2079511B (en) | 1980-06-25 | 1980-06-25 | Sound generator |
DE19813120236 DE3120236A1 (en) | 1980-06-25 | 1981-05-21 | HYDRAULIC TONE GENERATOR |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB8020721A GB2079511B (en) | 1980-06-25 | 1980-06-25 | Sound generator |
Publications (2)
Publication Number | Publication Date |
---|---|
GB2079511A GB2079511A (en) | 1982-01-20 |
GB2079511B true GB2079511B (en) | 1984-08-08 |
Family
ID=10514295
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB8020721A Expired GB2079511B (en) | 1980-06-25 | 1980-06-25 | Sound generator |
Country Status (2)
Country | Link |
---|---|
DE (1) | DE3120236A1 (en) |
GB (1) | GB2079511B (en) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3235325A1 (en) * | 1981-10-13 | 1983-04-21 | Coal Industry (Patents) Ltd., London | LIQUID SUPPLY SYSTEM FOR ROTATING CUTTING HEADS FOR MINING MACHINES WITH ROTATING CUTTING HEADS WITH LIQUID SUPPLYING SYSTEMS |
EP0108174A1 (en) * | 1982-11-02 | 1984-05-16 | Wultex Machine Company Limited | Alarms |
GB2133191A (en) * | 1983-01-07 | 1984-07-18 | Graham Clenton Rawlins | Warning alarm for mining machinery |
-
1980
- 1980-06-25 GB GB8020721A patent/GB2079511B/en not_active Expired
-
1981
- 1981-05-21 DE DE19813120236 patent/DE3120236A1/en not_active Withdrawn
Also Published As
Publication number | Publication date |
---|---|
GB2079511A (en) | 1982-01-20 |
DE3120236A1 (en) | 1982-05-13 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PCNP | Patent ceased through non-payment of renewal fee |