Matthew Madigan Graham

US Patent:

8098172, Jan 17, 2012

Filed:

Sep 26, 2008

Appl. No.:

12/286030

Inventors:

Matthew M. Graham - Chandler AZ, US

International Classification:

G08G 1/095

US Classification:

340908, 40586, 340321

Abstract:

A portable traffic control sign that includes a lightweight sign head selectively attachable to a lightweight pole. The sign head includes a thin interior frame sandwiched between two opposite facing, traffic sign panels. The interior frame includes an octagonal outer support structure and an inner support structure. Attached to the opposite surfaces of the outer and inner support structures are two arrays of LED bulbs. The two sign panels each include a thin transparent window. When placed on opposite sides of the interior sign frame, light from the first and second array of LED bulbs is able to be transmitted through the two windows exteriorly. In the preferred embodiment, each panel is made of DOT approved retro-reflective material. The two arrays are connected to a main control unit mounted inside the lightweight pole which also contains the battery pack and optional flasher switches.

US Patent:

20120120640, May 17, 2012

Filed:

Nov 15, 2010

Appl. No.:

12/927408

Inventors:

Matthew M. Graham - Chandler AZ, US

International Classification:

F21L 4/08

US Classification:

362183

Abstract:

A traffic safety system includes an enhanced reflective strip made from a flat, elongated flexible material having a plurality of layers. Preferably, the enhanced reflective strip includes a back layer having a plurality of LED's arranged in a pattern; a middle layer including weatherproofing material; and a front layer including a reflective material. Preferably, the enhanced reflective strip is installed in place of the top reflective band on a round construction drum or a construction barricade, though it could also be installed on any flat or round surface such as lane dividers, guardrails or water barriers. In a preferred embodiment of the present invention the enhanced reflective strip is installed on a construction drum and is solar powered. Preferably, a thin-film solar panel is attached to the top surface of the construction drum and the other components are placed inside the drum.