Differential relay arrangement for determining when one of two c

Communications: electrical – Systems – Call station

Patent

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

315 83, 3171555, 335151, 335177, 335182, 335268, G08B 2100

Patent

active

039757218

ABSTRACT:
There is provided an indicator and a pair of cooperating vehicular lamps including a first lamp and a second lamp. An arrangement for activating the indicator when only one of the lamps is operating includes at least one cylindrical coil unit having a winding comprised of two wires including a first wire and a second wire. The first wire is connected to the first lamp in such a manner that when the first lamp is operating the first wire carries the first current producing a first magnetic field. The second wire is connected to the second lamp in such a manner that when the second lamp is operating the second wire carries a second current producing a second magnetic field which opposes and at least partly cancels out the first magnetic field. An encapsulated magnetic field responsive switch unit is comprised of a magnetic field responsive switch encapsulated in a gas-tightly sealed capsule filled with a protective gas, and is positioned in the center of the coil unit and oriented to become activated when only a single one of said fields is produced and to remain unactivated when both said fields are produced. The encapsulated switch unit is connected to the indicator. When the encapsulated switch unit becomes activated, the indicator becomes activated.

REFERENCES:
patent: 1721177 (1929-07-01), Churcher
patent: 2048623 (1936-07-01), Redinger
patent: 2882367 (1959-04-01), Baker et al.
patent: 2916584 (1959-12-01), Molyneux
patent: 3134867 (1964-05-01), Winship
patent: 3629799 (1971-12-01), Birtwistle
patent: 3643248 (1972-02-01), Schott
patent: 3753224 (1973-08-01), Martin

LandOfFree

Say what you really think

Search LandOfFree.com for the USA inventors and patents. Rate them and share your experience with other people.

Rating

Differential relay arrangement for determining when one of two c does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Differential relay arrangement for determining when one of two c, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Differential relay arrangement for determining when one of two c will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFUS-PAI-O-1489303

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.