Stratedge Corporation

Other

General Atomic Company

The United States of America As Represented by the United States

Paul M Anderson

Joseph Babiarz

Martin Goetz

Alan W Lindner

Deborah S Wein

Timothy J Going

Gerald A Upham

Richard D Phelps

A high frequency microelectronic package suitable for high-frequency microelectronic devices includes a base which is at least partially conductive and attached to an RF substrate with a cavity formed at its center. The base may be metal or ceramic with a metal layer deposited thereon. A pattern of conductive paths for providing interconnection from the inside to the outside of the package are formed on the surface of the RF substrate. These conductive patterns are designed to have a constant impedance when uncovered, regardless of the dielectric property of the material used to cover the conductive patterns. Namely, a sealing cap or a lid, made from a variety of dielectric materials, may be attached to the RF substrate by a non-conductive adhesive, such as a polymer adhesive or low temperature seal glass, to seal the package once the microelectronic device has been mounted inside.

High frequency microelectronics package

A microelectronic package suitable for high-frequency microelectronic devices includes a base which is at least partially conductive attached to an RF substrate with a cavity formed at its center and a pattern of conductive paths for providing interconnection from the inside to the outside of the package. The base may be metal or ceramic with a metal layer deposited thereon. A sealing cap is attached to the RF substrate by a non-conductive adhesive, such as a polymer adhesive or low temperature seal glass, to seal the package once the microelectronic device has been mounted inside.

Microelectronics package

A bicycle frame supports a sprocket, front and rear wheels and first gears axially aligned with the rear wheel. Each gear has an individual ratio with the sprocket. At a first end, a support is attached to the frame at two (2) spaced positions, one axially aligned with the rear wheel. When loosened from the frame at such aligned position, the support is pivotable at the other position to provide access to the rear wheel and the gears for maintenance or repair. At its second end, the support holds a hollow shaft in a direction substantially parallel to the gear peripheries. A drive motor, a screw and a yoke mounted on the screw extend in this parallel direction within the shaft. Channels in the shaft receive the yoke to constrain yoke rotation. The motor drives the screw and yoke to position a spool linearly in the parallel direction. A takeup arm movable with the spool carries an additional gear into alignment with an individual one of the gears. A microprocessor is programmed as by handlebar-mounted switches to stop the motor at the proper position for each gear. The microprocessor accomplishes this by monitoring the position of a shaft encoder on the motor. A flexible bellows seals the spool to the support to exclude dirt. A chain extends in a closed loop around the sprocket, the individual gear and an additional gear. A spring adjusts the takeup arm position to eliminate any chain slack when the chain engages the individual gear.

Gear shifting apparatus

A ceramic microelectronic package suitable for high-frequency microelectronic devices includes a base which is at least partially conductive attached either by seal glass or by solder to a ceramic RF substrate with a cavity formed at its center and a pattern of conductive paths for providing interconnection from the inside to the outside of the package. The base may be metal or ceramic with a metal layer deposited thereon. A ceramic seal ring with a second cavity corresponding to that of the RF substrate, but slightly larger, is attached to the RF substrate by seal glass which is patterned to generally match the dimensions of the seal ring. A ceramic lid is attached to the top of the seal ring by a non-conductive adhesive, such as a polymer adhesive or low temperature seal glass, to seal the package once the microelectronic device has been mounted inside.

Ceramic microelectronics package

A bicycle has front and rear wheels, a sprocket coupled to a pedal crank, a sprocket gear, gears on the rear wheel and a gear chain extending around the sprocket gear and an individual one of the rear wheel gears. The chain is adjustably coupled to the individual gears on the rear wheel to respectively increase and decrease the gear ratio relative to the sprocket gear for sprocket speeds above the upper limit and below the lower limit. The upper limit is adjustable as by initially operating up and down switches together within a particular time limit and then operating the up switch for upper limit increments or the down switch for upper limit decrements. The sequence may then be repeated for lower limit adjustments. The movement of a particular number of sprocket ribs past a detector and the time for such movement are measured and processed to determine the sprocket speed. When the sprocket is rotating continuously at a speed below the lower limit, as when coasting downhill, the gear ratio is not changed. The system power is discontinued for no sprocket movement for a continuous time greater than the limited time.

Control system for adjusting bicycle gear ratios

An array of connected plates mounted on the inside wall of the vacuum vessel of a magnetic confinement reactor in order to provide a protective surface for energy deposition inside the vessel. All fasteners are concealed and protected beneath the plates, while the plates themselves share common mounting points. The entire array is installed with torqued nuts on threaded studs; provision also exists for thermal expansion by mounting each plate with two of its four mounts captured in an oversize grooved spool. A spool-washer mounting hardware allows one edge of a protective plate to be torqued while the other side remains loose, by simply inverting the spool-washer hardware.

Protective interior wall and attach8ing means for a fusion reactor

A reusable thermally actuated linkage arrangement includes a first link member having a longitudinal bore therein adapted to receive at least a portion of a second link member therein, the first and second members being sized to effect an interference fit preventing relative movement therebetween at a temperature below a predetermined temperature. The link members have different coefficients of thermal expansion so that when the linkage is selectively heated to a temperature above the predetermined temperature, relative longitudinal and/or rotational movement between the first and second link members is enabled. Two embodiments of a thermally activated linkage are disclosed which find particular application as actuators for a grapple head positioning arm in a nuclear reactor fuel handling mechanism to facilitate back-up safety retraction of the grapple head independently from the primary fuel handling mechanism drive system.

Thermally actuated linkage arrangement

A method for refueling a nuclear reactor core inside a pressure vessel is described. The method is used with a core which has at least one region comprised of a plurality of layers, each layer being comprised of a plurality of individual fuel elements with the corresponding fuel elements in respective layers forming columns extending transversely of the layers. Unspent fuel elements are first removed from the pressure vessel to expose at least one but not all of the spent fuel elements. The exposed spent fuel elements are then removed and the unspent elements are shuffled within the reactor core without being removed therefrom to expose additional spent fuel elements. These are removed and the shuffling process is repeated until all of the spent fuel elements have been removed. The initially removed unspent elements are then returned to the pressure vessel and placed in the core. New unspent fuel elements are then placed in the pressure vessel to complete the core.

Growing community of inventors

San Diego, CA, United States of America

Paul M Anderson