Flasher inductance circuit
US4092563A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Aug 30, 1976 |
| Grant date | May 30, 1978 |
| Priority date | — |
| Expiry date | Aug 30, 1996 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB60Q1/387
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
Deterioration of the electrical contacts of variable load flashers provided for intermittently energizing vehicle signal lamps is inhibited by the provision of a coiled length of a current conductor having a suitable inductance value connecting the flasher contacts with at least one output terminal. In the case of a two-terminal flasher, the conductor extends to the single output terminal from a junction at the flasher contacts and in such a flasher for use in a signal lamp circuit having a relatively high current load, the coiled length is wound about a heat conductive core member connected to the single output terminal and has an inductance value of about 5.8 to 6 microhenrys. In two terminal flashers for use in signal lamp circuits having a lower current load, the coiled length may have an air core and an inductance value of about 2 to 2.2 microhenrys. In the case of a three-terminal flasher, the output conductor extends to one of the two output terminals, and this terminal is connectable with the other by means including normally open contacts of a load-sensitive relay the activating coil of which is constituted by the coiled length of the output conductor having an inductance …
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.