An improved shark screen reduces the possibility of a survivor of a shipwreck or air disaster from being attacked by sharks. A thin film bag is vacuum packed and stored in a cigarette package sized container. After it is unfolded and filled with water, the disaster victim crawls inside. A small inflated annular chamber at the top of the bag ensures that it remains in an upright position and presents an even protuberance-free surface. The top is closed by a drawstring to lower the screen's above-...

A screen with characteristics of high brightness, controlled viewing angles, and ability to reject ambient light in which the longitudinal grooves formed therein are shaped so that the width and depth of each groove varies continuously along the length of the groove in a repeating sequence. The variation may take the form of a sine wave or be cuspoidal in shape. A method of producing the screen uses a rotating roller in which desired grooves are cut. After the drum is cut with a series of groove...

A screen for use with a fluid/specimen collector and a combination screen and fluid/specimen collector for collecting and trapping patient specimen(s) during a medical procedure comprising a collecting trap for receiving fluid/specimen(s) therein, a lid, an intake member for transferring fluid/specimen(s) from a patient into the collecting trap, and a waste exit member. The screen of the invention comprises an insert member capable of being placed within the lid of the fluid/specimen collector. ...

A display screen for a projection device is disclosed, wherein the display screen includes a substantially rigid translucent backing structure, and a viewing surface disposed on the backing structure, wherein the viewing surface has a frosted appearance. The display screen also may include a contrast-improving intermediate layer disposed between the backing structure and the viewing surface.

Methods, circuits, and apparatus for reducing memory bandwidth used by a graphics processor. Uncompressed tiles are read from a display buffer portion of a graphics memory and received by an encoder. The uncompressed tiles are compressed and written back to the graphics memory. When a tile is needed again before it has been modified, the compressed version is read from memory, uncompressed, and displayed. To reduce the number of unnecessary writes of compressed tiles to memory, a tile is only wr...

A screen system for underground wells, and a method of fluid flow control and/or sand production control in a well. The screen system may include an inner screen and an outer screen having a plurality of slots. A mechanism, which may include a motor, is provided to vary the size of the said slots, and may achieve this by rotating one end of the inner screen relative to the other end. An external screen shroud may also be provided and the rotatable mechanism may be controlled by a controller coup...

A screen for use in a vibratory machine for separating particulate material from liquid material comprising a rigid rectangular support frame having flanges along all four edges to which screen cloths of the type described are bonded with the longer dimension of the rectangular openings defined by the warp and weft wires of the cloth parallel to the longer dimension of the frame. The frame includes an array orthogonal rigid interstices defining a plurality of similar sized rectangular openings o...

A screen assembly is disclosed, wherein the screen assembly includes a frame including a screen retention section configured to receive and retain the screen, wherein the screen retention section includes a channel configured to receive an edge of the screen, and a screen retaining member disposed at least partially within the channel between the screen and a first side of the channel, wherein the screen retaining member biases the screen against a second side of the channel to secure the screen...

A method and apparatus for altering the reflectivity of a screen when light is supplied to a portion of the screen is disclosed. The orientation and shape of wires disposed on at least one bar of the screen is controlled to alter the reflectivity of the screen. Also provided is a method and apparatus for supporting a screen on a surface such as a wall, including placing slots within the screen for mating with connecting members mounted on a support frame connected to the surface.

A computer screen for a personal computer according to the present invention includes a main screen, one or more retractable sub-displays, and one or more retractable arms. The main screen has a main display and a docking space disposed behind the main display. The retractable sub-displays are adapted to be pushed in into and pulled out from the docking space of the main screen. The retractable arms, disposed in the docking space of the main display, are for holding the retractable sub-displays,...