GB1068143A - Improvements in or relating to a load insensitive thermomotive flasher - Google Patents
Improvements in or relating to a load insensitive thermomotive flasherInfo
- Publication number
- GB1068143A GB1068143A GB371266A GB371266A GB1068143A GB 1068143 A GB1068143 A GB 1068143A GB 371266 A GB371266 A GB 371266A GB 371266 A GB371266 A GB 371266A GB 1068143 A GB1068143 A GB 1068143A
- Authority
- GB
- United Kingdom
- Prior art keywords
- circuit
- load
- pull ribbon
- heating
- vane
- 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
- H01H61/00—Electrothermal relays
- H01H61/06—Self-interrupters, i.e. with periodic or other repetitive opening and closing of contacts
Landscapes
- Lighting Device Outwards From Vehicle And Optical Signal (AREA)
Abstract
1,068,143. Road traffic signals on vehicles. LEHIGH VALLEY INDUSTRIES Inc. Jan. 27, 1966, No. 3712/66. Heading G4Q. [Also in Division H2] A flasher unit comprising a vane 10 deformed by a thermally expansible pull ribbon 20 and carrying a movable contact 21 co-operating with a fixed contact 22, is characterized in that the heater circuit for the pull ribbon is completed by a pair of normally open contacts 18 and 40 controlled by a relay coil 35 in series with the load so that the heating rate, and therefore the flash rate, is independent of the load. To reduce variations of flash rate due to variations of supply voltage, the unit may include a heating coil 65 connected across the flasher unit and controlling a bimetal element 61 so that if the voltage rises a resistance 60 is included in the pull ribbon heating circuit. In Fig. 13 the pull ribbon is heated by a surrounding heating coil 25, but it may be heated partly or wholly by passage of current through it and it may be insulated from the vane 10 at one end. The load may comprise turn-indicating lamps and the circuit may include a dimming resistance (55, Fig. 1, not shown) which is normally shortcircuited and is brought into circuit when the vehicle lights are switched on. A pilot lamp may be connected across each lamp (Fig. 14) or across the turn-indicating switch (Fig. 16) or between terminal 18 and earth.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB371266A GB1068143A (en) | 1966-01-27 | 1966-01-27 | Improvements in or relating to a load insensitive thermomotive flasher |
| FR49337A FR1478437A (en) | 1966-01-27 | 1966-02-11 | Improvements to thermostatic indicators |
| DE1966L0052834 DE1261030C2 (en) | 1966-01-27 | 1966-02-11 | FLASH SWITCH |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB371266A GB1068143A (en) | 1966-01-27 | 1966-01-27 | Improvements in or relating to a load insensitive thermomotive flasher |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1068143A true GB1068143A (en) | 1967-05-10 |
Family
ID=9763535
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB371266A Expired GB1068143A (en) | 1966-01-27 | 1966-01-27 | Improvements in or relating to a load insensitive thermomotive flasher |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB1068143A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4095208A (en) * | 1975-11-08 | 1978-06-13 | Lucas Industries Limited | Intermittently operable electrical switch assembly |
-
1966
- 1966-01-27 GB GB371266A patent/GB1068143A/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4095208A (en) * | 1975-11-08 | 1978-06-13 | Lucas Industries Limited | Intermittently operable electrical switch assembly |
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