G - Physics – 08 – G
Patent
G - Physics
08
G
315/1, 340/55
G08G 3/00 (2006.01)
Patent
CA 1244076
METHOD AND APPARATUS FOR SIMULTANEOUSLY ACTUATING NAVIGATIONAL LANTERNS Abstract A method and apparatus for causing a plurality of navigational lanterns, each equipped with an indepen- dent light sensing device and connected to a common synchronizing terminal, to actuate simultaneously at dusk, and deactuate simultaneously at dawn. The light sensing device senses the three levels of day, twilight and night. When a sensing device senses day, the connected lantern is disabled from flashing and is dis- abled from sending a synchronizing signal to other lanterns to flash. When a sensing device senses twilight, the connected lantern is enabled to receive the synchron- izing signal, but is disabled from sending a synchronizing signal. When the sensing device senses night, the connecting lantern is enabled and a synchronizing signal to flash is sent to all of the lanterns.
509283
Recane Marion L.
Tigwell David C.
Borden Ladner Gervais Llp
Tideland Signal Corporation
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