John D Mayfield

US Patent:

20050281024, Dec 22, 2005

Filed:

Oct 21, 2004

Appl. No.:

10/970615

Inventors:

John Mayfield - Loganville GA, US
Stephen Lydecker - Snellville GA, US
Gary Trott - Eatonton GA, US
Carl Gould - Boulder CO, US
Kevin Leadford - Evergreen CO, US
Christopher Sharp - Conyers GA, US

International Classification:

F21S004/00

US Classification:

362221000, 362217000, 362225000

Abstract:

A light fixture or troffer for directing light emitted from a light source toward an area to be illuminated, including a reflector assembly within which the light source is positioned and a lens assembly detachably secured to a portion of the reflector assembly such that a lens of the lens assembly overlies the light source and such that substantially all of the light emitted from the light source passes through the lens assembly. In one example, the lens includes a curved prismatic surface that can be oriented toward or away from the underlying light source.

US Patent:

20070109795, May 17, 2007

Filed:

Nov 15, 2005

Appl. No.:

11/274673

Inventors:

Algimantas Gabrius - Oxford GA, US
John Mayfield - Loganville GA, US

International Classification:

F21V 29/00

US Classification:

362373000

Abstract:

The present invention is a thermal dissipation system for a ballast of a lighting system. The thermal dissipation system comprises a ballast housing that is adapted for engagement with an elongate support of a common lighting system. The ballast housing comprises a thermally conductive material and is made to substantially house a ballast therein. The ballast housing has a body and thermal transfer surfaces that are shaped to substantially conform to portions of the inner surface of the support. In one aspect, the thermal transfer surfaces of the ballast housing are integral with the body of the housing. In another aspect, the ballast is housed within the body.

US Patent:

20070133215, Jun 14, 2007

Filed:

Sep 14, 2006

Appl. No.:

11/531960

Inventors:

John Mayfield - Loganville GA, US
Stephen Lydecker - Snellville GA, US
Brian Brown - Decatur GA, US

International Classification:

F21V 19/00

US Classification:

362382000

Abstract:

A light fixture or troffer for directing light emitted from a light source toward an area to be illuminated, including a reflector assembly within which the light source is positioned and a lens assembly detachably secured to a portion of the reflector assembly such that a lens of the lens assembly overlies the light source and such that substantially all of the light emitted from the light source passes through the lens assembly. The reflector assembly including at least one longitudinally extending hollow that extends inwardly to a central portion between respective first and second hollow edges. Each hollow has a plurality of longitudinally extending male ridges.

US Patent:

20070183148, Aug 9, 2007

Filed:

Feb 12, 2007

Appl. No.:

11/674004

Inventors:

John Mayfield - Loganville GA, US
Stephen Lydecker - Snellville GA, US

International Classification:

F21S 4/00

US Classification:

362223000, 362224000, 362329000

Abstract:

A light fixture or troffer for directing light emitted from a light source toward an area to be illuminated, including a reflector assembly within which the light source is positioned, a lens assembly detachably secured to a portion of the reflector assembly such that a lens of the lens assembly overlies a portion of the light source, and a plurality of end caps secured to a housing of the light fixture and overlying a portion of the light source such that substantially all of the light emitted from the light source passes through the lens assembly and the end caps.

US Patent:

20070183158, Aug 9, 2007

Filed:

Apr 16, 2007

Appl. No.:

11/735890

Inventors:

JOHN MAYFIELD - Loganville GA, US
Stephen Lydecker - Snellville GA, US
Gary Trott - Eatonton GA, US
Carl Gould - Boulder CO, US
Kevin Leadford - Evergreen CO, US
Christopher Sharp - Conyers GA, US

International Classification:

F21V 7/00

US Classification:

362341000

Abstract:

A light fixture or troffer for directing light emitted from a light source toward an area to be illuminated, including a reflector assembly within which the light source is positioned; a housing defining at least one selectively enclosable ballast enclosure; and a ballast that is positionable in the at least one ballast enclosure.

US Patent:

20070211457, Sep 13, 2007

Filed:

Feb 12, 2007

Appl. No.:

11/706467

Inventors:

John Mayfield - Loganville GA, US
Carl Gould - Golden CO, US
George McIlwraith - Fayetteville GA, US
Christopher Sharp - Conyers GA, US

International Classification:

F21V 7/00

US Classification:

362223000, 362217000, 362225000

Abstract:

A replacement light fixture for directing light emitted from a light source toward an area to be illuminated, including a base member upon with the light source is positioned and a reflector assembly detachably secured to a first and second mounting brackets that are mounted to a portion of the preexisting light fixture housing such that a lens portion of the reflector assembly overlies the light source and such that substantially all of the light emitted from the light source passes through the lens portion

US Patent:

20070297181, Dec 27, 2007

Filed:

Jun 21, 2007

Appl. No.:

11/766241

Inventors:

JOHN THOMAS MAYFIELD - Loganville GA, US
Stephen Haight Lydecker - Snellville GA, US
Charles T. Faircloth - Covington GA, US

International Classification:

F21V 7/00

US Classification:

362342

Abstract:

A louver assembly is disclosed for use in an overhead lighting system. The louver assembly comprises a series of thin, lightweight stringers and blade ribs arranged perpendicular to one another such that the respective side surfaces of the respective stringers are positioned at an acute angle with respect to a ceiling plane and the reflective faces of the blade ribs are positioned substantially transverse with respect to the ceiling plane.

US Patent:

20080019126, Jan 24, 2008

Filed:

Jul 2, 2007

Appl. No.:

11/772633

Inventors:

Kenneth Straton - Conyers GA, US
John Mayfield - Loganville GA, US

International Classification:

F21V 29/00
F21S 4/00

US Classification:

362218000, 362223000

Abstract:

A light fixture or troffer for directing light emitted from a light source toward an area to be illuminated, including a reflector assembly within which the light source is positioned and a lens assembly detachably secured to a portion of the reflector assembly such that a lens of the lens assembly overlies the light source and such that substantially all of the light emitted from the light source passes through the lens assembly. In one aspect, the reflector assembly defines a plurality of air slots.