A method of forming a tube with an inner wall having a high-wear resistance and a low coefficient of friction comprising: deaerating an uncured thermosetting resin, coating glass filaments with the resin, and winding the glass filaments about a rotating mandrel in a band at a pitch no greater than the bandwidth. A first layer of wound glass filaments is formed in a single axial pass along the mandrel, and this first layer is helically overwound with subsequent layers. The resin coating the wound...

A system and method for depositing a sample of a threat agent onto a substrate. The deposition of the threat agent onto the substrate is visually observed by analyzing the elastic scattered photons produced by the threat agent using elastic scatter imaging to form an image of the threat agent on the substrate, wherein depositing of the threat agent is substantially coincident in time with visually observing of the deposition of the threat agent.A system and method for depositing a sample of a th...

A frictional resistance measuring apparatus having a platform (28) attached to a frame (20). A pair of tandem wheels (36) are also attached to the frame (20), the combination providing a resistance surface and a rotational drive source when placed upon the ground or floor. A movable weight box (38) is slideably disposed and captivated within the frame (20) and is free to move fore and aft. A gear reduction drive arrangement in the form of gears and roller chains transmit the rotation of the whee...

A MEMS-based silicon CTD sensor for ocean environment is presented. The sensor components are a capacitive conductivity sensor, a gold doped silicon temperature sensor, and a multiple diapghram piezoresistive pressure sensor. The sensor elements have further been packaged to protect them from harsh marine environment. The sensor components showed good linear response, resolution and mechanical integrity to the harsh ocean environment.

The present pillow case is comprised of a tubular bag with a closed end and an open end. The bag has a predetermined length such that, when a conventional pillow of a predetermined size is fully inserted into the bag against the closed end, a loose extension is provided on the side of the open end. A flat pocket for holding a child's article is attached to the bag near the open end at a position substantially overlapping an adjacent end of the pillow. An opening on the pocket is angled sharply t...

A water soluble core of an aluminum or magnesium alloy is used for the production of an object with a hollow space. The aluminum or magnesium alloy is rendered water-soluble by flame spraying or by sintering to produce a high oxide content.

A system is disclosed for evaluating nitrogen levels in thin gate dielectric layers formed on semiconductor samples. In one embodiment, a tool is disclosed which includes both a narrow band ellipsometer and a broadband spectrometer for measuring the sample. The narrowband ellipsometer provides very accurate information about the thickness of the thin film layer while the broadband spectrometer contains information about the nitrogen levels. In another aspect of the subject invention, a thermal a...

Methods and apparatus for simultaneously bonding a plurality of first workpieces to spaced-apart locations on at least one second workpiece. The invention is particularly suited for simultaneously bonding a plurality of lead wires to the terminal land areas of an integrated circuit or other electronic device. A deformable, compliant support member is spirally wound with a continuous metallic filament. After the spiral has been formed it is secured to the support member by any suitable adhesive m...

The hydrometer assembly comprises telescoping tubes of which the inner one is transparent or has a windowed area. In the fully telescoped state of the two tubes, clamping parts associated with them retain the hydrometer float in a locked position within the inner tube. The closure for the lower extremity of the outer tube includes a fine mesh screen so that extending of the tubes longitudinally permits a liquid which is to be evaluated to be drawn into and retained within the tube interior. The ...

Fuel is supplied stably to the engine for models under severe operational conditions. The magnetic core 34 is inserted in the solenoid coil 32 in the box 31. The movable valve body 38 is provided in the box 31. The valve body 38 is pressed by the plate spring 44 so as to close the fuel injection opening 37. The check valve 24 is provided on the fuel feeding passage 48. The diaphragm partitions between the air pressure supply passage 25 and the internal of the box 31. The pulsatory air pressure o...