Duckham
Alan Duckham, Baltimore, MD US
Patent application number | Description | Published |
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20080299410 | METHOD FOR FABRICATING LARGE DIMENSION BONDS USING REACTIVE MULTILAYER JOINING - A method for joining component bodies of material over bonding regions of large dimensions by disposing a plurality of substantially contiguous sheets of reactive composite materials between the bodies and adjacent sheets of fusible material. The contiguous sheets of the reactive composite material are operatively connected by an ignitable bridging material so that an igniting reaction in one sheet will cause an igniting reaction in the other. An application of uniform pressure and an ignition of one or more of the contiguous sheets of reactive composite material causes an exothermic thermal reaction to propagate through the bonding region, fusing any adjacent sheets of fusible material and forming a bond between the component bodies. | 12-04-2008 |
20080314735 | Reactive Multilayer Joining To Control Thermal Stress - A method for bonding components with a reactive multilayer foil, wherein during bonding, the components are held at a temperature or temperature gradient chosen to reduce thermal stress in the resulting bonded product. | 12-25-2008 |
20090173626 | METHOD FOR FABRICATING TEMPERATURE SENSITIVE AND SPUTTER TARGET ASSEMBLIES USING REACTIVE MULTILAYER JOINING - A method for joining component bodies of material over bonding regions of large dimensions by disposing a plurality of substantially contiguous sheets of reactive composite materials between the bodies and adjacent sheets of fusible material. The contiguous sheets of the reactive composite material are operatively connected by an ignitable bridging material so that an igniting reaction in one sheet will cause an igniting reaction in the other. An application of uniform pressure and an ignition of one or more of the contiguous sheets of reactive composite material causes an exothermic thermal reaction to propagate through the bonding region, fusing any adjacent sheets of fusible material and forming a bond between the component bodies. | 07-09-2009 |
Alan Duckham, Orchard Park, NY US
Patent application number | Description | Published |
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20140264394 | LIGHT EMITTING DIODE - A light emitting diode with a front surface adapted to emit light and a rear surface is provided with a reflective coating on the rear surface, the reflective coating being primarily silver and containing either 0.4% bismuth or a combination of 0.5% tin, 0.2% copper, and 0.2% samarium. | 09-18-2014 |
Stephen Craig Duckham, Newton-Le-Willows GB
Patent application number | Description | Published |
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20080242544 | Phytoactive Composition - The present invention relates to compositions comprising a phytoactive compound and methods comprising the use of such compositions. | 10-02-2008 |
Wendy Duckham, Towersey Thame GB
Patent application number | Description | Published |
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20110120044 | Door Edge Construction - A door is constructed with a separate member joined to the door edge by a tongue-and-groove coupling and screws so as to be readily removable and replaceable. The separate member sustains the impacts imparted to the door by carts or wagons pushed past the door and can be readily replaced when damaged, thus avoiding replacement of the entire door. A flexible cover snaps over the outer surface of the separate member to add impact resistance and aesthetic appeal. Intumescent strips may be inserted inside or outside of the cover to enhance sealing between the door, and as adjacent door or door frame, thereby improving the fire resistance rating of the door. Accent strips or reveals of contrasting or complementary colors may be incorporated to add to the aesthetic appeal of the door. The door construction is of particular utility in schools, health care facilities and other institutions. | 05-26-2011 |