Other

Northern Telecom Limited

Reginald B Bennett

Reginald S Bennett

Roger C Finn

Allan R Drake

A reflector has 3 planar reflecting surfaces with the upper and lower surfaces each intersecting the central plane at an angle between 145.degree. and 150.degree., each reflecting surface being composed of individually imperceptible cube corner reflectors.

Three panel reflector

A reflectant surface of retro reflective material comprises a plurality of parallel convex outward ribs having a center-to-center spacing of between 3/8' and 1/16'. The retro reflective surface preferably employs an arrangement of triads mutually perpendicular surfaces, which triads and surfaces are indistinguishable at normal minimum viewing distances.

Ribbed reflector

A direction indicating reflector uses two planar reflecting panels arranged at an included angle of about 60.degree. to each other. Each panel provides an optically exposed plurality of cube corners arranged in triads of mutually perpendicular retro reflectant surfaces which are not individually distinguishable at minimum expected viewing distances.

Direction indicating reflector with planar reflector panels including

The invention provides a method of applying an overlay conductor between at least a pair of connection land areas on a surface of a printed circuit board. The pattern of the conductor is first defined by the application of a dielectric material between the pair of land areas. A silver polymer ink is then applied over the dielectric material and over only a portion of each land area. The polymer ink is then cured by exposure to a source of heat. The pair of land areas and at least the portion of the cured ink overlaying the land areas are then covered with silver solder paste which is subsequently reflowed by exposure to a source of heat and allowed to solidify thereby attaching the conductor to the land area and providing a secure conductive connection.

Process for application of overlay conductors to surface of printed

The invention provides a process for forming an electrical conductor pattern on desired areas of a substrate comprising the steps of applying a predetermined pattern of silver polymer ink on the substrate and at least partially curing it. A layer of silver solder paste is then applied over the cured polymer ink to a width larger than that of the ink. The solder paste is then reflowed and allowed to solidify, whereby the silver polymer ink becomes encapsulated in the reflowed silver solder to form the desired pattern of conductors which may then be covered with a layer of dielectric material comprising a cured non-conductive polymer ink.

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Oakville, Canada

Reginald B Bennett