Psc Inc.

General Signal Corporation

Star Headlight & Lantern Co., Inc.

Casual Directions, Inc.

Motorola Corporation

Harris Corporation

James H Karlin

Daniel J Bentley

David O Mechler

Stephen T Vukosic

Michael F Mastin

Terrence E Derdzinski

Harold McGuire

A visual signaling device has one or more light source modules arranged in a stack. Each module is of 'Tri-liptic' i.e. generally triangular shape, but with the triangle corners rounded. Inside the triangle, is a perfect circle, to aid in the optical dispersion of the light source. The modules are each formed by back and front moldings. The front molding defines one of the sides of the module, while the back molding defines the other two sides of the module. The light source module contains a light source (incandescent, halogen, rotating, strobe or LED) on a printed circuit board. This module also contains the electronics, which operate the light source, and can cause it to flash, be illuminated constantly or operate a rotating reflector around a stationery bulb. A conduit, which is a strip of printed circuit board with connectors at its opposite ends, extends between the top and bottom of each module of the stack. The board containing the light source is inserted via guides into another connector which is attached to the conduit. The light source module may readily be removed for purposes of changing bulbs, which burn out, or to exchange light sources of different type, for example a rotating reflector source for a stationery bulb source. The back molding is closed by the front molding to form a sealed enclosure for the light source module. Modules may be inter-connected into a stack by connection of the top and bottoms of the back moldings of adjacent modules in the stack by means of interlocking projection and slots. A cover and a base may be connected to the topmost and lowermost modules of the stack. The base may contain an audible warning source. The connection of the modules into the stack does not require separate rods or screws which extend through the entire stack.

Growing community of inventors

Fairport, NY, United States of America

James H Karlin