Stephen G Kaufman

6501017, Dec 31, 2002

Dec 7, 2000

09/732344

Stephen R. Kaufman - Georgetown TX

EMC Test Systems, L.P. - Austin TX

H05K 900

174 35C, 2851491, 174152 G

An electromagnetic radiation seal, particularly adapted for sealing a rotary or linearly movable shaft penetrating a shielded enclosure includes a housing mountable on an enclosure wall and forming a cavity delimited by the housing and the shaft and which is filled with metal particulates, such as tungsten or lead shot pellets. The metal particulates are in intimate contact with the shaft and with the seal housing to prevent transmission of electromagnetic radiation between the interior and exterior of the enclosure at the penetration formed by the shaft.

20020106259, Aug 8, 2002

Feb 5, 2001

09/777206

Stephen Kaufman - Georgetown TX, US

F16B023/00

411/396000

A nonmetallic threaded fastener, such as a machine screw or bolt, is formed by injection molding a plastic head over one end of a continuously threaded shank, preferably formed of glass fiber reinforced plastic. The fastener is formed in a three part mold including a first part threadedly connected to the shank and received in a bore in a second part of the mold. The second mold part is joined to a third part which includes a cavity for receiving molten plastic to form the fastener head integrally molded to one end of the continuously threaded shank part.

53790480, Jan 3, 1995

Aug 4, 1993

8/101635

Stephen R. Kaufman - Georgetown TX

The Electro-Mechanics Company - Austin TX

H01Q 300

343765

An automatic tilt apparatus for use with electromagnetic emission testing devices. The apparatus enables the user to always bore-sight, that is, to point the antenna directly at the object being tested regardless of the height of the antenna. The apparatus utilizes a cam plate to achieve automatic tilting. A threaded rod, connected to the vertical drive mechanism of the testing device converts the rotary motion of the sprocket drive to a horizontal motion. The threaded rod is located within a boom that connects to the testing device. The linear, horizontal motion of the threaded rod causes a first bolt within a slot of the boom to move. A cam plate is attached to the carrier boom via the first bolt and a second bolt which is fastened through an arcuate slot in the cam. The motion of the first bolt causes the second bolt to follow the geometry of the acrucate slot, thus causing The cam plate to tilt in accordance with the vertical height of the testing device. An antenna boom and attached antenna will thus also point at the object being tested regardless of the vertical position of the testing device.

60803436, Jun 27, 2000

Mar 17, 1997

8/819644

Stephen G. Kaufman - Albuquerque NM
Barry L. Spletzer - Albuquerque NM

Sandia Corporation - Albuquerque NM

B29C 4330

264 405

Rapid prototyping methods and apparatuses that produce structures made of continuous-fiber polymer-matrix composites without the use of molds. Instead of using molds, the composite structure is fabricated patch by patch in layers or wraps, using a two- or three-axis stage connected to a rapidly-reconfigurable forming surface, and a robot arm to position the evolving composite structure, which are both programmable devices. Because programmable devices are included, i. e. , a robot and a two- or three-axis stage connected to the reconfigurable forming surface, the control program needed to produce a desired shape can be easily modified to automatically generate the desired shape from an electronic model (e. g. , using a CAD/CAM system) of the desired (predetermined) shape.