Gary R Allen

US Patent:

6400076, Jun 4, 2002

Filed:

May 14, 1996

Appl. No.:

08/649887

Inventors:

Gary R. Allen - Chesterland OH
Rocco T. Giordano - Garfield Heights OH
Gary O. Jacobs - Willoughby OH
Kenneth S. King - Chesterland OH
Timothy P. Dever - Fairview Park OH

Assignee:

General Electric Company - Schenectady NY

International Classification:

H01J 1704

US Classification:

313572, 313620, 313634

Abstract:

A high brightness discharge light source having improved thermal balance characteristics includes a lamp envelope having an arc chamber formed therein and a pair of electrodes extending into opposite ends of the arc chamber so as to be displaced from one another by a distance of no greater than 4 mm. A fill disposed within the arc chamber is excited to a discharge state upon the introduction of an excitation energy coupled through the pair of electrodes. The light source is operated vertically so that one of the electrodes is disposed at the top region and the other electrode is disposed at the bottom region of the arc chamber. The arc chamber is formed having a diameter dimension which is just larger than the spacing between the electrodes, and a height dimension which is approximately twice the diameter dimension. The diameter dimension is substantially uniform along the length of the arc chamber. The uniform diameter characteristic is effective so that the thermal operating properties associated with the discharge state are substantially equally distributed from the top to the bottom regions of the arc chamber thereby resulting in extending the life of this light source to approximately 6000 hours.

US Patent:

6621219, Sep 16, 2003

Filed:

Dec 28, 2000

Appl. No.:

09/751295

Inventors:

Gary R. Allen - Chesterland OH
James Howard - Shaker Heights OH
James A. Leonard - Shaker Heights OH

Assignee:

General Electric Company - Schenectady NY

International Classification:

H01J 1718

US Classification:

313623, 313624

Abstract:

A significant reduction in thermal energy loss along the legs or ends of the arctubes in a CMH lamp is achieved in the present invention. The diameter of a mandrel ( ) is significantly reduced for CMH lamps. Either a single overwind ( ) or multiple overwind layers ( ) are used. Since the thermal conductivity of the mandrel greatly exceeds that of the overwind, the axial thermal conductivity will scale like the cross sectional area of the mandrel alone.

US Patent:

7352118, Apr 1, 2008

Filed:

Dec 10, 2003

Appl. No.:

10/732885

Inventors:

Ashfaqul I. Chowdhury - Mayfield Heights OH, US
Rajasingh Israel - Westlake OH, US
Gary R. Allen - Chesterland OH, US

Assignee:

General Electric Company - Schenectady NY

International Classification:

H01J 61/35
H01J 5/16

US Classification:

313112, 313110, 313113, 313489, 313635, 362 61, 362150, 356121

Abstract:

A metal halide lamp () includes a light-transmissive envelope () which encloses a metal halide pool () for generating a discharge when spaced apart electrodes () within the envelope are supplied with an electric current. A multi-layer coating () is deposited on a surface () of the envelope. The coating includes several layers of at least two materials of different refractive index, which, in combination, reflect radiation in the UV region of the electromagnetic spectrum. Rather than optimizing the coating for a normal (i. e. , 0) angle of incidence on the coating, the multi-layer coating is optimized at an angle which is selected to be within 10 of the mean angle (α) of incidence of the UV radiation on the arctube surface, thereby increasing the amount of UV radiation which is returned to the metal halide pool. The coating is preferably optimized for high reflectivity in the UV-region of the spectrum and high transmission in the visible region of the spectrum to maximize useful light output while reflecting UV light back to the metal halide pool for improved heating of the pool.

US Patent:

7443103, Oct 28, 2008

Filed:

Jun 24, 2005

Appl. No.:

11/166315

Inventors:

Jianwu Li - Solon OH, US
Alan G. Chalmers - Akron OH, US
Viktor K. Varga - Solon OH, US
Timothy B. Gurin - Munson Township OH, US
Gary R. Allen - Chesterland OH, US
Anjali Kotkunde - Maharashtra, IN
James C. McNamara - South Euclid OH, US

Assignee:

General Electric Company - Schenectady NY

International Classification:

H05B 41/36

US Classification:

315209R, 315291, 315224, 315DIG 7

Abstract:

A method and system to supply current to a high pressure lamp is provided, the method and system comprising an alternating lamp current waveform with a half cycle mean amplitude I and a half cycle time duration T, a current pulse waveform including at least one current pulse with a half cycle mean amplitude I and at least one current pulse occurring after the trailing edge of a half cycle of the alternating lamp current, the pulse having a half cycle duration of Tp. These waveforms are combined to generate a current waveform including a current pulse waveform, the current pulse waveform starting after a time delay Td from the trailing edge of a half cycle of the alternating lamp current waveform, the time duration Tp of the at least one current pulse lasting less than the remaining time before the leading edge of the second half cycle of the alternating lamp current waveform. The combined current waveform supplies current to a high pressure lamp and produces a cone shaped tip protrusion which reduces lamp flicker.

US Patent:

7642719, Jan 5, 2010

Filed:

Apr 12, 2005

Appl. No.:

11/103800

Inventors:

Gary Robert Allen - Chesterland OH, US
William W. Beers - Chesterland OH, US
Matthew Pierce - Cleveland Hts. OH, US
Evan Karrs - Gibsonia PA, US
Edward Eugene Hammer - Mayfield Village OH, US

Assignee:

General Electric Company - Schenectady NY

International Classification:

H01J 11/00
H01J 17/44
H01J 65/00

US Classification:

313594, 313234, 313607

Abstract:

A discharge lamp having a starting assembly is provided for use with existing high frequency electronic ballasts. The lamp comprises a light-transmissive envelope and has a discharge sustaining fill of an inert gas mixture of krypton and argon. The starting assembly comprises at least one conductive path attached to the outside or inside surface of the envelope or embedded in the envelope.

US Patent:

7768207, Aug 3, 2010

Filed:

Oct 12, 2007

Appl. No.:

11/871657

Inventors:

Gary R. Allen - Chesterland OH, US
Deeder Aurongzeb - Mayfield Heights OH, US

Assignee:

General Electric Company - Schenectady NY

International Classification:

H01J 17/16

US Classification:

313635, 313493

Abstract:

The invention relates to a high temperature material modified to exhibit enhanced IR emittance in the wavelength range where a black body operating at the same high temperature exhibits peak emittance, to a light-transmissive body comprising the high temperature material, to a high intensity lamp comprising the high temperature material, and to a method of preparing the same.

US Patent:

7786673, Aug 31, 2010

Filed:

Feb 28, 2006

Appl. No.:

11/363598

Inventors:

Gary Robert Allen - Chesterland OH, US
David C. Dudik - South Euclid OH, US
Viktor K. Varga - Solon OH, US
Robert Baranyi - Budaors, HU
Agoston Boroczki - Budapest, HU
Elizabeth A. Guzowski - Cleveland Heights OH, US
Jianwu Li - Solon OH, US
Rocco T. Giordano - Garfield Heights OH, US
Svetlana Selezneva - Schenectady NY, US
Amol S. Mulay - Karnataka, IN

Assignee:

General Electric Company - Schenectady NY

International Classification:

H01J 17/16

US Classification:

313634, 313 25

Abstract:

A lamp is provided having an arctube having a light-transmitting envelope. The arctube is surrounded by a gaseous medium confined by a containment envelope such as a hermetic shroud. The gaseous medium is preferably He or Hor Ne or another gas whose thermal conductivity is greater than that of Nat 800 C. , or a mixture thereof, to help cool the arctube. The inside and/or outside of the shroud may be coated with a diffusion barrier. To help cool the hot spot of the arctube the gap between the shroud and the envelope can be made small, the portion of the shroud wall near the arc can be thickened, the arctube can be offset above the longitudinal axis of the shroud, and the return lead of the arctube can be located between the shroud and the arctube.

US Patent:

7800291, Sep 21, 2010

Filed:

May 9, 2007

Appl. No.:

11/746425

Inventors:

William W. Beers - Chesterland OH, US
Gary R. Allen - Chesterland OH, US
Bruce Roberts - Mentor on the Lake OH, US
Gregory Brown - Cincinnati OH, US

Assignee:

General Electric Company - Schenectady NY

International Classification:

H01J 1/62

US Classification:

313485, 315291

Abstract:

A low-wattage mercury vapor discharge fluorescent lamp is provided. The lamp has a discharge sustaining fill of mercury vapor and an inert gas having 1-100 mole % xenon, balance comprising a rare gas or rare gas mixture, such as krypton or argon. The fill gas has a total pressure of 0. 5-4 torr, and the lamp being adapted to operate below 10 watts per foot of arc length.