THOMAS W EAGAR
Engineering in Belmont, MA

2002000, Jan 3, 2002

Mar 16, 2001

09/809818

Michael Mutsakis - Brooklyn NY, US
John Puglia - Townsend MA, US
Gerald Freedland - Beverly MA, US
Thomas Eagar - Belmont MA, US
Harold Larson - Belmont MA, US

B01D025/00

210/323200

A filtration module is provided using metallic interconnect tubes that are sealed to carbon or ceramic based tubular filtration elements and that are also sealed to metallic tubesheets which are sealed to a filter housing. A sealed joint is formed between the interconnect tubes and the filtration elements using a metal alloy and an optional metallic plating on the filtration elements. In order to reduce or prevent undesired wicking of the alloy into the filtration element, refractory small solid particles may be added to or formed in the alloy to block the pores and channels in the filtration element at the site of the joint. Wicking can also be reduced by induction, torch or other type of heating where only those portions of the filtration element at the site of the joint is heated so that temperatures adjacent the site are below the solidus temperature of the alloy. When sealing on the inside of the wall of the filtration element, a compressive force may be applied to the outside of the wall during formation of the sealed joint to reduce the opportunity for the joint to fail as a result of the different coefficients of thermal expansion of the filtration element and the interconnect tubes. The use of the metallic interconnect tubes and tubesheets, rather than the conventional elastomers, polymers and rubbers, allows the filtration module to better withstand the high temperatures and corrosive fluids often present in severe service applications. The filtration elements may be reverse osmosis, nanofiltration, ultrafiltration or microfiltration membranes.

6939505, Sep 6, 2005

Mar 12, 2002

10/096091

Christopher S. Musso - Concord MA, US
Thomas W. Eagar - Belmont MA, US

Massachusetts Institute of Technology - Cambridge MA

B28B001/30, B28B007/16

264635, 264629, 264630, 264125, 419 5

Channeled articles having very small diameter channels spaced very closely can be made by packing elongated cores in a fixture, clamping them, and then introducing matrix material around the cores. The matrix material is formed into a unitary body and solidified. The cores are pulled out, leaving open channels where they had been. Some core and matrix combinations will permit the cores to be pulled out. Others require a core release coating to be applied to the cores. The cores can be metal or ceramic or polymer, and the matrix can be metal or ceramic or polymer. The cores can be solid, or hollow. Rather than pulling the cores out, if they are polymer, they can be burned out. The matrix can be formed by liquid state, solid state, or hybrid liquid/solid state techniques. A related technique uses hollow cores, which are not pulled out, but which remain in the body after unification. For such tube-walled articles, the matrix can be formed similarly.

5855314, Jan 5, 1999

Mar 7, 1997

8/813145

Ren-Kae Shiue - Taipei, TW
Bradley J. Miller - Westboro MA
Eric Schulz - Worcester MA
Thomas W. Eagar - Belmont MA

Norton Company - Worcester MA

B23K 119

2281245

An abrasive grit for a metal bonded Single Layer abrasive tool includes abrasive grains coated with a first active component. The active component is mechanically-bound to the surface of the superabrasive grains. Preferably the abrasive is a superabrasive, especially diamond, and the first active component is titanium, either in the form of elemental Ti or TiH. sub. 2. The novel grit is made by mixing the first active powder component in a liquid binder to form an adhesive paste; mixing the paste with the abrasive grains to wet the grains, and drying the mixture to adhere active component to the grains. The coated abrasive can be brazed onto a core to form a Single Layer tool, especially with a brazing composition that includes a bronze alloy and small concentrations of a second active component. During brazing the novel abrasive grains provide excellent surface contact with the brazing composition and the braze strongly bind the grains to the tool core. The brazed composition is easy to chemically or electrochemically strip from the cores of worn abrasive tools to permit reconstruction of the tools.

2011026, Nov 3, 2011

Jan 25, 2006

11/795844

Yuttanant Boonyongmaneerat - Bangkok, TH
Christopher A. Schuh - Ashland MA, US
Thomas W. Eagar - Belmont MA, US

Massachusetts Institute of Technology - Cambridge MA

B32B 17/06

428433, 428432

A method joins bodies of two component materials, at least one of which is a particulate, at low temperature. A third component has a lower melting point than either of the components. The third component chemically reacts with one or both of the first two to form material with a higher melting point than the original third component. The system is heated to at or above that melting point. The third component melts and flows, migrating to fill spaces between particles. The fluid should migrate to and across the interface, bridging the two component materials. The migrating phase network connects across the joining interface. The reaction product remains solid at temperatures above the original melting point of the third component. The migrating phase can be the liquefied form of the third component, or, a glass, heated to act as a supercooled liquid.

5132922, Jul 21, 1992

Mar 20, 1991

7/673261

Mansoor A. Khan - Grafton MA
Charly Allemand - Newtonville MA
Thomas W. Eagar - Belmont MA

Massachusetts Institute of Technology - Cambridge MA

G01J 500

364557

An apparatus and method for non-contact temperature measurement of an object, using least-squares-based multiwavelength pyrometry techniques. Radiances from an object are detected by a spectrograph/detector apparatus and are converted into electronic signals readable by a computer. The computer then operates on these signals as data to be curve-fit, using least squares analysis, to a predetermined theoretical function for the dependence of the radiance on the wavelength. When the computer has minimized the least-squares difference function, the computer identified a parameter representing the temperature and reports this value to the user, along with a collaterally calculated maximum error in the temperature estimate.

4512822, Apr 23, 1985

Jun 29, 1984

6/626613

Eric A. Barringer - Waltham MA
Thomas W. Eagar - Belmont MA

Massachusetts Institute of Technology - Cambridge MA

B23K 3534

148 24

A welding flux binder is provided which comprises an alkali-alkaline earth silicate hydrolyzed and polymerized from tetraalkylorthosilicate, Si(OR). sub. 4, wherein R is --CH. sub. 3, --C. sub. 2 H. sub. 5, or --C. sub. 3 H. sub. 7, and alkali and alkaline earth salts. The reaction product of the tetraalkylorthosilicate and metal salts, M. sub. 2 O. M'O. SiO. sub. 2, where M is potassium, sodium or lithium, and M' is magnesium, calcium or barium, has several advantages as a welding flux binder. For example, it is not hygroscopic and can be prepared at low temperatures since the alkali ions lower the melting point for viscous sintering of the gel phase. Because of the low temperature processing, a wide variety of solid additives with low thermal stability, such as some metals, carbonates, and fluorides, can be incorporated into the flux. Other dopants may also be readily incorporated into the binder during the gel phase.

4557768, Dec 10, 1985

Nov 19, 1984

6/673016

Eric A. Barringer - Waltham MA
Thomas W. Eagar - Belmont MA

Massachusetts Institute of Technology - Cambridge MA

B23K 3534

148 24

A welding flux binder is provided which comprises an alkali-alkaline earth silicate hydrolyzed and polymerized from tetraalkylorthosilicate, Si(OR). sub. 4, wherein R is --CH. sub. 3, --C. sub. 2 H. sub. 5, or --C. sub. 3 H. sub. 7, and alkali and alkaline earth salts. The reaction product of the tetraalkylorthosilicate and metal salts, M. sub. 2 O. M'O. SiO. sub. 2, where M is potassium, sodium or lithium, and M' is magnesium, calcium or barium, has several advantages as a welding flux binder. For example, it is not hygroscopic and can be prepared at low temperatures since the alkali ions lower the melting point for viscous sintering of the gel phase. Because of the low temperature processing, a wide variety of solid additives with low thermal stability, such as some metals, carbonates, and fluorides, can be incorporated into the flux. Other dopants may also be readily incorporated into the binder during the gel phase.

8617457, Dec 31, 2013

Jul 6, 2012

13/543575

Adam Clayton Powell - Newton MA, US
Jason Douglas - Prospect KY, US
Luciano Spiridigliozzi - North Reading MA, US
Michael Buchman - Boston MA, US
Thomas Eagar - Belmont MA, US

Infinium, Inc. - Natick MA

F28B 9/08, B01D 5/00, C21D 11/00, C22B 9/02

266 80, 266 85, 266 90, 266148, 266154, 266218

An apparatus for condensing metal vapors has at least one inlet conduit that is cooled to cause a portion of the metal vapor to condense to liquid. The apparatus also has a holding tank that is connected to the inlet conduit that collects condensed liquid metal. The apparatus also has at least one outlet conduit connected to the holding tank that is cooled to cause a portion of the remaining metal vapor to condense to solid metal. The apparatus also has at least one heater that heats the at least one outlet conduit to cause the solid metal to melt to liquid metal and subsequently flow in to the holding tank. The apparatus also has at least one sealing mechanism located at a distal end of the at least one outlet conduit for preventing metal vapor and carrier gas from exiting the outlet conduit during heating of the outlet conduit.

4810308, Mar 7, 1989

Jan 19, 1988

7/145050

Thomas W. Eagar - Belmont MA
Dwarika P. Agarwal - Attleboro MA
Laura L. Bourguignon - East Providence RI
Rosaire Marcotte - Attleboro MA

Leach & Garner Company - Attleboro MA

C22F 114, C22C 508

148158

A unique hardenable silver alloy is provided which is solution annealed and preferably age-hardened to yield a silver alloy of exceptional and reversible hardness. The alloys utilize intermetallic systems comprising silver, copper, combined with lithium alone or tin alone in varying percent amounts, or silver, copper, lithium and either tin or antimony, or silver, copper, lithium and either aluminum or indium or zinc, or silver, copper, antiomony and either aluminum or indium or zinc, or silver, copper, lithium, tin and antimony, or silver, copper, lithium, tin and bismuth, or silver, copper, lithium, tin, bismuth and antimony.

4580558, Apr 8, 1986

Mar 28, 1984

6/594168

Rene J. Cabrera - Stoughton MA
Thomas W. Eagar - Belmont MA

Codman & Shurtleff, Inc. - Randolph MA

A61B 1736

1283031

A surgical tool for intercepting laser energy after it has energized a target site but before it energizes adjacent tissue. The instrument includes substrate of material having a high thermal conductivity for transmitting laser energy away from the surgical site and a highly absorbent surface material for absorbing radiant energy at the wavelength of the incident laser.