Arlene Hecker

US Patent:

6620272, Sep 16, 2003

Filed:

Feb 15, 2002

Appl. No.:

10/077504

Inventors:

Gregory Zaslavsky - Marblehead MA
Christopher S. Nordahl - Beverly MA
Joseph V. Lima - Salem MA
Arlene Hecker - Beverly MA

Assignee:

Osram Sylvania Inc. - Danvers MA

International Classification:

B29C 6506

US Classification:

156 735, 156 82, 1562728, 156292, 1563082

Abstract:

A method for making a ceramic body is provided wherein the ceramic components are joined in their green state. The method includes applying heat to the surfaces to be joined to cause a localized melting of the binder. The surfaces are then brought together and joined by alternately applying compression and stretching. The method is particularly advantageous for forming unitary ceramic arc tube bodies for high intensity discharge (HID) lighting applications.

US Patent:

6661171, Dec 9, 2003

Filed:

Apr 16, 2002

Appl. No.:

10/063367

Inventors:

Arlene Hecker - Beverly MA

Assignee:

Osram Sylvania Inc. - Danvers MA

International Classification:

H01K 150

US Classification:

313594, 313607

Abstract:

A integral starting aid for high intensity discharge lamps is provided wherein the starting aid comprises a conductive, refractory metal nitride stripe which is directly applied to the surface of the ceramic arc tube. Preferably, the starting aid comprises titanium nitride or zirconium nitride and may be mixed a ceramic material to improve translucency.

US Patent:

D484255, Dec 23, 2003

Filed:

Feb 15, 2002

Appl. No.:

29/155780

Inventors:

Gregory Zaslavsky - Marblehead MA
Christopher S. Nordahl - Beverly MA
Joseph V. Lima - Salem MA
Arlene Hecker - Beverly MA

Assignee:

Osram Sylvania Inc. - Danvers MA

International Classification:

2606

US Classification:

D26 2

US Patent:

6873108, Mar 29, 2005

Filed:

Sep 14, 2001

Appl. No.:

09/952982

Inventors:

Arlene Hecker - Beverly MA, US
George C. Wei - Weston MA, US
Helmar G. Adler - Danvers MA, US
Dieter Lang - Bruckmuehl, DE

Assignee:

Osram Sylvania Inc. - Danvers MA

International Classification:

H01J061/36

US Classification:

313624, 313623, 313625, 501152, 501153

Abstract:

A ceramic metal halide discharge lamp may be made having a monolithic seal between a sapphire arc tube and a polycrystalline alumina cap. The lamp is made by providing an arc tube of fully dense sapphire and providing a cap made of unsintered compressed polycrystalline alumina doped with magnesium oxide and yttrium oxide. The cap is presintered to remove binder material at a low temperature. The presintered cap is placed on an end of the arc tube to form a close interface. The presintered cap and arc tube are then heated to until the cap is fully sintered onto the arc tube and the sapphire tube grows into the cap. A monolithic seal is formed along the interface as the sapphire grows into the polycrystalline alumina.

US Patent:

6955579, Oct 18, 2005

Filed:

Mar 19, 2004

Appl. No.:

10/805372

Inventors:

Arlene Hecker - Beverly MA, US
George C. Wei - Weston MA, US
Helmar G. Adler - Danvers MA, US
Dieter Lang - Bruckmuehl, DE

Assignee:

Osram Sylvania Inc. - Danvers MA

International Classification:

H01J009/00

US Classification:

445 27, 445 26

Abstract:

A method of producing a ceramic metal halide discharge lamp having a monolithic seal between a sapphire (single crystal alumina) arc tube and a polycrystalline alumina (PCA) end cap. The method includes the steps of providing an arc tube of fully dense sapphire and providing an end cap made of unsintered compressed polycrystalline alumina powder doped with magnesium oxide and yttrium oxide. The end cap is heated until it is presintered to remove organic binder material at a low temperature relative to the sintering temperature. The presintered end cap is placed on an end portion of the arc tube to form a close interface between the two. The presintered end cap and adjacent arc tube are then heated to until the end cap is fully sintered onto the arc tube and the sapphire tube grows into the end cap. A monolithic seal is formed along the interface between the end cap and the arc tube as the sapphire tube grows into the polycrystalline alumina end cap. The yttrium oxide promotes increased growth between sapphire tube and the PCA end cap and is not detrimental to the metal halide chemistry, nor subject to erosion by the metal halide chemistry.

US Patent:

7038383, May 2, 2006

Filed:

Sep 27, 2004

Appl. No.:

10/711582

Inventors:

Scott J. Butler - North Oxford MA, US
Arlene Hecker - Beverly MA, US

Assignee:

Osram Sylvania Inc. - Danvers MA

International Classification:

H01J 17/30

US Classification:

313595, 315330

Abstract:

An arc tube for a high intensity discharge lamp comprising a translucent body defining a discharge space and including spaced-apart electrodes; an arc generating and sustaining medium within the discharge space; and a starting aid contained within the discharge space, the starting aid comprising an electrically conductive stripe formed from a mixture of an electrically conductive material and the high temperature material.

US Patent:

7170228, Jan 30, 2007

Filed:

Jun 30, 2004

Appl. No.:

10/881197

Inventors:

Arlene Hecker - Beverly MA, US
Ernest Davey, Jr. - Hampton Falls NH, US
Dana Caldwell - Middleton MA, US

Assignee:

Osram Sylvania Inc. - Danvers MA

International Classification:

H01J 61/35

US Classification:

313623, 313594, 313607

Abstract:

A ceramic arc tube having an integral susceptor for RF inductive sealing is described. The integral susceptor in the form of an electrically conductive coating is applied directly to the surface of the arc tube in the seal region. This enables RF heating which is sufficient to melt a frit material and hermetically seal the arc tube. The integral susceptor further provides for a more controlled placement of the seal.

US Patent:

7728495, Jun 1, 2010

Filed:

Aug 1, 2007

Appl. No.:

11/832032

Inventors:

Karlene J. Zuk - Danvers MA, US
Arlene Hecker - Beverly MA, US
Cathy S. Trumble - Barrington NH, US
Joanne M. Browne - Newburyport MA, US

Assignee:

Osram Sylvania Inc. - Danvers MA

International Classification:

H01J 1/02

US Classification:

313 43, 313 42, 313623

Abstract:

A method of making an HID lamp and an HID lamp that includes a ceramic envelope with a ceramic capillary, wherein the capillary has an electrode feed-through therein that is sealed inside the capillary by a frit seal that extends inside the capillary a first distance from a distal end of the capillary, and a ceramic heat sink around at least half an external diameter of the capillary, wherein the heat sink is separated from the envelope and from the distal end of the capillary and the heat sink is in thermally conductive contact with the capillary and has an external diameter at least 1. 5 times the external diameter of the capillary. In one preferred embodiment, the heat sink does not overlap the frit seal.