GB717090A - Overtaking signal installation for vehicles - Google Patents
Overtaking signal installation for vehiclesInfo
- Publication number
- GB717090A GB717090A GB18697/52A GB1869752A GB717090A GB 717090 A GB717090 A GB 717090A GB 18697/52 A GB18697/52 A GB 18697/52A GB 1869752 A GB1869752 A GB 1869752A GB 717090 A GB717090 A GB 717090A
- Authority
- GB
- United Kingdom
- Prior art keywords
- housing
- trumpet
- diaphragm
- july
- microphone
- 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
- 238000009434 installation Methods 0.000 title abstract 2
- 239000013078 crystal Substances 0.000 abstract 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 abstract 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 abstract 2
- 229910052799 carbon Inorganic materials 0.000 abstract 2
- 238000013016 damping Methods 0.000 abstract 2
- 239000011358 absorbing material Substances 0.000 abstract 1
- 239000005030 aluminium foil Substances 0.000 abstract 1
- 229910052742 iron Inorganic materials 0.000 abstract 1
- 239000000463 material Substances 0.000 abstract 1
- 230000004048 modification Effects 0.000 abstract 1
- 238000012986 modification Methods 0.000 abstract 1
- 230000001681 protective effect Effects 0.000 abstract 1
- 239000011347 resin Substances 0.000 abstract 1
- 229920005989 resin Polymers 0.000 abstract 1
- 238000005476 soldering Methods 0.000 abstract 1
- 125000000391 vinyl group Chemical group [H]C([*])=C([H])[H] 0.000 abstract 1
- 229920002554 vinyl polymer Polymers 0.000 abstract 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 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
- H04R17/00—Piezoelectric transducers; Electrostrictive transducers
- H04R17/10—Resonant transducers, i.e. adapted to produce maximum output at a predetermined frequency
-
- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B3/00—Audible signalling systems; Audible personal calling systems
- G08B3/10—Audible signalling systems; Audible personal calling systems using electric transmission; using electromagnetic transmission
-
- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B7/00—Signalling systems according to more than one of groups G08B3/00 - G08B6/00; Personal calling systems according to more than one of groups G08B3/00 - G08B6/00
- G08B7/06—Signalling systems according to more than one of groups G08B3/00 - G08B6/00; Personal calling systems according to more than one of groups G08B3/00 - G08B6/00 using electric transmission, e.g. involving audible and visible signalling through the use of sound and light sources
-
- 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
- H04R1/08—Mouthpieces; Microphones; Attachments therefor
- H04R1/083—Special constructions of mouthpieces
-
- 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
- H04R1/08—Mouthpieces; Microphones; Attachments therefor
- H04R1/083—Special constructions of mouthpieces
- H04R1/086—Protective screens, e.g. all weather or wind screens
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
- General Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Piezo-Electric Transducers For Audible Bands (AREA)
- Exhaust Silencers (AREA)
Abstract
717,090. Microphones; piezo-electric receivers. HEIMANN, W., [trading as PHYSIKALISCH-TECHNISCHE WERKSTATTEN July 23, 1952 [July 23, 1951; July 23, 1951; July 23, 1951], No. 18697/52. Addition to 705,450. Class 40 (4) [Also in Groups XXXVIII and XL (b)] In an installation to enable the driver of a vehicle to hear horn signals from behind (see Group XXXVIII) a carbon microphone positioned near the tail of the vehicle and a piezo-electric receiver placed near the driver are resonance-tuned to a frequency range which includes normal horn frequencies, i.e. about 2500 c/s to 3000 c/s. The microphone assembly (Fig. 1) comprises a pick-up trumpet 1 carrying at its apex a housing 2 for a carbon microphone 3 pressed against a thin rubber washer 9. This is mounted within a protective housing 4 by means of two rings 6 one of which is attached to the trumpet 1 and the other to the housing 4 with the interposition of three or more vibration-damping blocks 5. Preferably the housing 4 is coated internally, and the trumpet 1 externally, with a sound-absorbing material. In a modification, Fig. 2 (not shown), the trumpet 1 is carried on blocks 5 mounted at its larger end. Alternatively the trumpet 1 may be rigid with the housing 4 and the whole mounted on the vehicle chassis by a suitable vibration-damping block. A coarse-meshed grid 7 prevents entry of stones. Spaced gauze screens 8 protect the microphone from water splashes and are arranged so as not to lie at sound nodes. Instead of or in addition to screens 8, a thin water-repelling diaphragm may be provided. A cone of maximum diameter. 20 cms. and slant height 20 cms. is stated to form a satisfactory trumpet. The receiver (Figs. 4 and 5) comprises a piezoelectric crystal 15 driving a cone diaphragm 21 and resonating at 2500-3000 c/s. The crystal 15 is secured in a semi-circular slot 17 in a housing 14 by means of three small rubber feet 16 and its free corner is attached to the diaphragm 21 of aluminium foil by means of a member 18 of material having a low softening temperature and low thermal conductivity, e.g. a vinyl resin. This member 18 has a slot for attachment to the crystal and is shaped to fit the apex of the cone diaphragm 21, part of it projecting through a small hole in the manner of a rivet, Fig. 6 (not shown). This end is deformed by heat, e.g. by a soldering iron, to form a rivet head and securely hold the diaphragm. The housing 14 is closed by a trumpet member 25 which is attached by a simple snap action of a slot 27 over small protuberances on the outer surface of the housing 14. A slightly elastic ring 28 serves to hold the diaphragm 21 and a gauze grid 26 in position. The cavity behind the diaphragm 21 may be tuned to resonance by an adjustable piston (not shown) which varies the volume of the housing.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DEP5919A DE923354C (en) | 1951-07-24 | 1951-07-24 | Overtaking signal system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB717090A true GB717090A (en) | 1954-10-20 |
Family
ID=6626604
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB622/52A Expired GB705450A (en) | 1951-07-24 | 1952-01-08 | Overtaking signal installation for vehicles |
| GB18697/52A Expired GB717090A (en) | 1951-07-24 | 1952-07-23 | Overtaking signal installation for vehicles |
Family Applications Before (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB622/52A Expired GB705450A (en) | 1951-07-24 | 1952-01-08 | Overtaking signal installation for vehicles |
Country Status (4)
| Country | Link |
|---|---|
| DE (1) | DE923354C (en) |
| FR (2) | FR1047370A (en) |
| GB (2) | GB705450A (en) |
| IT (1) | IT500018A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE10003689C1 (en) * | 2000-01-28 | 2001-05-23 | Hella Kg Hueck & Co | Power matching circuit for loudspeaker amplifier for automobile warning siren, has switching device connecting loudspeaker to different transformer windings or tap-off connections dependent on supply voltage |
| US20190149934A1 (en) * | 2017-11-16 | 2019-05-16 | Robert Bosch Gmbh | Device for airborne sound acoustic sensing of the surroundings of a vehicle, vehicle |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2931020A (en) * | 1955-07-11 | 1960-03-29 | Thomas J Bender | Secondary alarm system |
| DE1112927B (en) * | 1956-05-08 | 1961-08-17 | Tele F Lux Soc A R L | Method for the electrical transmission of acoustic overtaking signals from vehicles |
| US3670689A (en) * | 1970-03-20 | 1972-06-20 | Falcon Safety Prod | Tilt-operated hand held gas powered acoustic device |
| EP3907502A1 (en) | 2020-05-08 | 2021-11-10 | ABB Schweiz AG | Sensing arrangement |
-
0
- IT IT500018D patent/IT500018A/it unknown
-
1951
- 1951-07-24 DE DEP5919A patent/DE923354C/en not_active Expired
- 1951-12-28 FR FR1047370D patent/FR1047370A/en not_active Expired
-
1952
- 1952-01-08 GB GB622/52A patent/GB705450A/en not_active Expired
- 1952-07-08 FR FR64910D patent/FR64910E/en not_active Expired
- 1952-07-23 GB GB18697/52A patent/GB717090A/en not_active Expired
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE10003689C1 (en) * | 2000-01-28 | 2001-05-23 | Hella Kg Hueck & Co | Power matching circuit for loudspeaker amplifier for automobile warning siren, has switching device connecting loudspeaker to different transformer windings or tap-off connections dependent on supply voltage |
| US20190149934A1 (en) * | 2017-11-16 | 2019-05-16 | Robert Bosch Gmbh | Device for airborne sound acoustic sensing of the surroundings of a vehicle, vehicle |
Also Published As
| Publication number | Publication date |
|---|---|
| GB705450A (en) | 1954-03-10 |
| IT500018A (en) | |
| FR64910E (en) | 1955-12-14 |
| DE923354C (en) | 1955-02-10 |
| FR1047370A (en) | 1953-12-14 |
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