摘要:
A gate-controlled bidirectional switching device has two main terminals on opposite major surfaces of the device. A single gate terminal located adjacent one of the main terminals on one of the major surfaces receives a signal biased with respect to said one terminal to trigger the device into conduction. The device conducts current in either direction through the main terminals, depending on the polarity of an applied bias potential across the main terminals. By controlling the resistivities or the widths of two base regions in the device with respect to each other, a trigger current for switching the device from a nonconductive state to conduct current in the one direction is adjusted with respect to that required to switch the device to conduct current in the other direction.
摘要:
A gate-controlled bidirectional switching device has two main terminals on opposite major surfaces of the device. A single gate terminal located adjacent one of the main terminals on one of the major surfaces receives a signal biased with respect to said one terminal to trigger the device into conduction. The device conducts current in either direction through the main terminals, depending on the polarity of an applied bias potential across the main terminals. By controlling the resistivities or the widths of two base regions in the device with respect to each other, a trigger current for switching the device from a nonconductive state to conduct current in the one direction is adjusted with respect to that required to switch the device to conduct current in the other direction.
摘要:
A handless or footless operation of an electrical automatic water flow control apparatus for turning water on and off without touching the faucet lever of a faucet. The electrical water flow control apparatus is installed in line between the water shutoff valves from the wall and the water supply lines that descend from a faucet. The flow control apparatus includes a housing which houses a pair of solenoid operated valves. Each solenoid operated valve has an inlet port and an outlet port, where the ports are protruding through a wall of the housing. The inlet ports are connected to the hot and cold water shutoff valves by flexible hoses. The outlet ports are connected to the water supply lines from the faucet by flexible hoses. The electrical flow control apparatus further comprises an elongated bar switch actuator and a transformer which supplies power to the solenoid operated valves. The bar switch actuator is constructed of micro-switches which are electrically connected together and to the solenoid operated valves. The solenoid operated valves are operated by depressing any part of the elongated bar switch actuator with any part of body of a user, which when depressed energizes the solenoid operated valves to open to allow the flow of water therethrough and when the elongated bar switch actuator is not depressed, closes the solenoid operated valves to stop the flow of water through the flow control apparatus.
摘要:
This invention is directed to a window shade whose width can be decreased, without cutting instruments, to conform to the size of the window opening into which the shade is to be mounted. The window shade includes a roller and a shade secured to the roller having at one or both edges a plurality of spaced strip lines, preferably invisible, extending from end-to-end parallel to the shade edges. The strip lines permit hand-stripping of discrete widths of the shade while the shade is rolled on the roller. The roller includes substantially coincident with the strip lines of the shade a plurality of longitudinally spaced, circumferentially extending strip lines permitting removal of a corresponding discrete length of the roller. In accordance with the invention disclosed, the shade includes a plurality of integral tabs at the hem end of the shade whose edges generally coincide with the strip lines to facilitate the stripping of discrete widths of the shade.
摘要:
Fiber reinforced thermoplastic molded products, sheets, and the like, having a glossy surface are produced by intimately blending discrete reinforcing fibers (e.g. fiberglass) and thermoplastic fibers (e.g. polypropylene or polycarbonate) into a web. The web is heated to the melting point of the thermoplastic fibers while applying pressure, to eliminate air and press the web into a consolidated structure. Breakage of the reinforcing fibers is minimized by limiting the thickness of the web and limiting the pressure so as to produce a consolidated structure with minimal fiber breakage and a Notched Izod of at least one. Layered consolidated structures, some without reinforcing fibers, may be heated and pressed together to form a final structure having a thickness greater than the individual structures. The great majority of the fibers are provided so that the fibers of each type are within the range of about 0.5-5 inches. A sheet capable of replacing an automotive metal panel (that is having sufficiently high gloss, rigidity and impact characteristics) is provided, the sheet having a Notched Izod of at least about two and preferably at least about five. Products with Notched Izods of up to eight or nine may be achieved.
摘要:
Polymer blends of a polyester and polyvinyl alcohol, or their copolymers, may be fabricated into barrier packaging materials having very low permeabilities to oxygen, other fixed gases and moisture.
摘要:
This invention is directed to a window shade whose width can be decreased, without cutting instruments, to conform to the size of the window opening into which the shade is to be mounted. The window shade includes a roller and a shade secured to the roller having at one or both edges a plurality of spaced strip lines, preferably invisible, extending from end-to-end parallel to the shade edges. The strip lines permit hand-stripping of discrete widths of the shade while the shade is rolled on the roller. The roller includes, substantially coincident with the strip lines of the shade, a plurality of longitudinally spaced, circumferentially extending strip lines permitting removal of a corresponding discrete length of the roller. In accordance with the invention disclosed, the shade can be conveniently shortened by the consumer in the home, without the need for cutting of the shade, thus eliminating the need for cutting machines.
摘要:
Discrete non-clumping mechanically stable geometric alloyed material shapes having about 55-95% by weight thermoplastic elastomer and about 5-45% thermoplastic polymer and about 0-12% by weight filler are used for removing organic contaminates from contaminated fluids. The shapes are typically spheres having a maximum dimension of 0.125 inches, or circular discs having a thickness of less than 6 millimeters. The shapes are put in a loose form or packing, and a fluid containing organic contaminants (such as water, air, or a soil slurry) is brought into contact with the shapes so that the shapes absorb organic contaminants from the fluid, typically absorbing more than 90% of the contaminants in the first pass through. The contaminated fluid is typically passed through an ozone generator before being brought into contact with the shapes. The shapes may be foamed, e.g. utilizing about 0.1-10% by weight foaming agent. The invention allows removal of organic contaminants to ppm levels from very large loadings, such as crude contaminated water, fuel-containing soil, and open air spills of organic solvents.
摘要:
Fiber reinforced thermoplastic molded products, sheets, and the like, having a glossy surface are produced by intimately blending discrete reinforcing fibers (e.g. fiberglass) and thermoplastic fibers (e.g. polypropylene or polycarbonate) into a web. The web is heated to the melting point of the thermoplastic fibers while applying pressure, to eliminate air and press the web into a consolidated structure. Breakage of the reinforcing fibers is minimized by limiting the thickness of the web and limiting the pressure so as to produce a consolidated structure with minimal fiber breakage and a Notched Izod of at least one. Layered consolidated structures, some without reinforcing fibers, may be heated and pressed together to form a final structure having a thickness greater than the individual structures. The great majority of the fibers are provided so that the fibers of each type are within the range of about 0.5-5 inches. A sheet capable of replacing an automotive metal panel (that is having sufficiently high gloss, rigidity and impact characteristics) is provided, the sheet having a Notched Izod of at least about two and preferably at least about five. Products with Notched Izods of up to eight or nine may be achieved.
摘要:
Fiber reinforced thermoplastic molded products, sheets, and the like, having a glossy surface are produced by intimately blending discrete reinforcing fibers (e.g. fiberglass) and thermoplastic fibers (e.g. polypropylene or polycarbonate) into a web. The web is heated to the melting point of the thermoplastic fibers while applying pressure, to eliminate air and press the web into a consolidated structure. Breakage of the reinforcing fibers is minimized by limiting the thickness of the web and limiting the pressure so as to produce a consolidated structure with minimal fiber breakage and a Notched Izod of at least one. Layering consolidated structures, some without reinforcing fibers, may be heated and pressed together to form a final structure having a thickness greater than the individual structures. The great majority of the fibers are provided so that the fibers of each type are within the range of about 0.5-5 inches. A sheet capable of replacing an automotive metal panel (that is having sufficiently high gloss, rigidity and impact characteristics) is provided, the sheet having a Notched Izod of at least about two and preferably at least about five. Products with Notched Izods of up to eight or nine may be achieved.