Abstract: An antenna system for electromagnetic compliance testing within a frequency range includes a driven element mounted on a boom and including opposed first and second length-adjustable conductors. A length-adjustable passive element is mounted on the boom and spaced apart from the driven element and including opposed third and fourth length-adjustable conductors. An RF input connector is coupled between a feed path to a feed end of each length-adjustable conductors in the driven element. The feed path is configured to minimize stray reactances and stub effects within the frequency range.

Abstract: An antenna system for electromagnetic compliance testing within a frequency range includes a driven element mounted on a boom and including opposed first and second length-adjustable conductors. A length-adjustable passive element is mounted on the boom and spaced apart from the driven element and including opposed third and fourth length-adjustable conductors. An RF input connector is coupled between a feed path to a feed end of each length-adjustable conductors in the driven element. The feed path is configured to minimize stray reactances and stub effects within the frequency range.

Abstract: A method and associated instrument are disclosed for increasing the sequential rate at which a series of microwave assisted chemical reactions that potentially generate high pressure can be carried out. The method includes the steps of opening a pressure-resistant valve on a microwave-transparent pressure-resistant vessel to define a unpressurized pathway through the valve into the vessel, inserting a tube through the pathway in the valve and into the vessel, transferring at least one composition into the vessel through the tube, removing the tube from the vessel and from the pathway in the valve, closing the valve to seal the vessel against pressure release, and exposing the vessel and its contents to microwave radiation.

Abstract: An antenna system with at least one tunable dipole element with a length adjustable conductive member disposed. The element is made of two longitudinally aligned, hollow support arms made of non-conductive material. Disposed longitudinally inside each element is a length adjustable conductive member electrically connected at one end. Each conductive member is stored on a spool that is selectively rotated to extend the conductive member into the support arm. The support arms are affixed at one end to a rigid housing. During use, the conductive members are adjusted in length to tune the element to a desired frequency. The antenna can be optimally tuned at a specific frequency for maximum gain, maximum front-to-back ratio, as a bi-directional antenna, and to provide a desired feed point impedance. An electronic control system allows the length of the conductive members to be manually or automatically adjusted to a desired frequency.

Abstract: A method and associated instrument are disclosed for increasing the sequential rate at which a series of microwave assisted chemical reactions that potentially generate high pressure can be carried out.

Abstract: An antenna system with at least one tunable dipole element with a length adjustable conductive member disposed. The element is made of two longitudinally aligned, hollow support arms made of non-conductive material. Disposed longitudinally inside each element is a length adjustable conductive member electrically connected at one end. Each conductive member is stored on a spool that is selectively rotated to extend the conductive member into the support arm. The support arms are affixed at one end to a rigid housing. During use, the conductive members are adjusted in length to tune the element to a desired frequency. The antenna can be optimally tuned at a specific frequency for maximum gain, maximum front-to-back ratio, as a bi-directional antenna, and to provide a desired feed point impedance. An electronic control system allows the length of the conductive members to be manually or automatically adjusted to a desired frequency.

Abstract: A method and associated apparatus are disclosed for microwave assisted content analysis. The method includes the steps of applying microwave radiation to a sample while concurrently rotating the sample while the microwave radiation is being applied and while concurrently weighing the sample and while measuring the temperature of the sample and controlling or moderating the microwaves applied to the sample based upon the measured temperature.

Abstract: A method and associated apparatus are disclosed for microwave assisted content analysis. The method includes the steps of applying microwave radiation to a sample while concurrently rotating the sample while the microwave radiation is being applied and while concurrently weighing the sample and while measuring the temperature of the sample and controlling or moderating the microwaves applied to the sample based upon the measured temperature.

Abstract: A method and associated apparatus are disclosed for microwave assisted content analysis. The method includes the steps of applying microwave radiation to a sample while concurrently rotating the sample while the microwave radiation is being applied and while concurrently weighing the sample and while measuring the temperature of the sample and controlling or moderating the microwaves applied to the sample based upon the measured temperature.

Abstract: A laser bar code scanner employing a retroreflector in combination with a rotating polygon reflector to increase scan width and reduce curvature in the scanning beam.

Abstract: A dual reflector lighting system (10) having a housing, a ballast and a lamp socket (16) connected to receive a gaseous discharge or high intensity discharge (HID) lamp (14). An outer reflector (21) is mounted to the housing to reflect a portion of light from the lamp (14). An inner or auxiliary reflector (22) is mounted coaxially with the lamp (14) to reflect a substantial amount of light from the lamp (14) downwardly. The auxiliary reflector (22) is preferably adjustable relative to the lamp (14). The invention also covers a dual reflector assembly, including an outer reflector (21) and inner reflector (22), adjustable relative to each other which is adapted to be mounted to a HID fixture. The invention also covers an auxiliary reflector (22) having a predetermined size and shape adapted to fit within an outer reflector (21) of a HID fixture and preferably includes facilities for adjusting the auxiliary reflector (22) relative to the outer reflector (21).

Abstract: A laser bar code scanner employing a retroreflector in combination with a rotating polygon reflector to increase scan width and reduce curvature in the scanning beam.

Abstract: In a bar code scanner of the fixed amount type, laser beam reflections from the target location are collected by an object detector that senses predetermined specular reflections and determines whether an object is present or absent, and whether the object has a bar code label or lacks a bar code label.

Abstract: A dual reflector lighting system having a housing, a ballast and a lamp socket connected to receive a gaseous discharge or high intensity discharge (HID) lamp. An outer reflector is mounted to the housing to reflect a portion of light from the lamp. An inner or auxiliary reflector is mounted coaxially with the lamp to reflect a substantial amount of light from the lamp downwardly. The auxiliary reflector is preferably adjustable relative to the lamp. The invention also covers a dual reflector assembly, including an outer reflector and an inner reflector, adjustable relative to each other which is adapted to be mounted to a HID fixture. The invention also covers an auxiliary reflector having a predetermined size and shape adapted to fit within an outer reflector of a HID fixture and preferably includes facilities for adjusting the auxiliary reflector relative to the outer reflector.

Abstract: A process for manufacturing containers that are suitable for containing materials that are to be heated by microwave radiation or other heating equipment includes making a dilute liquid dispersion of quartz and/or glass fibers (very preferably microfibers), depositing them on the interior of a permeable female mold or form, from the dispersion by way of a pressure differential across the female mold, with the liquid passing through the mold, moving a male mold or form which matches the female mold, into and against the container in the female mold, terminating the pressure differential across the female mold, applying a pressure differential across the male mold to release the container from the female mold and press it against the male mold exterior, withdrawing the male mold, with the container held to it, releasing the container from the male mold and sintering the container, to make it form retaining.

Abstract: A process for manufacturing containers for holding heated materials includes the steps of depositing a dispersion of fibers in a liquid onto the interior of a liquid permeable female mold, removing liquid from the deposited dispersion by applying a pressure differential across the mold, with the higher pressure being in the interior of the mold, moving a liquid permeable male mold into the female mold, terminating the pressure differential across the female mold, applying a pressure differential across the male mold, with the higher pressure being on the exterior thereof, to press the container onto the male mold exterior, withdrawing the male mold from the female mold, with the container being held to the male mold, and releasing the container from the male mold.

Abstract: An earth-penetrating synthetic image radar system includes a frequency generator, a transmitter, a microprocessor-based timing and frequency controller, a reference receiver, a parallel polarized receiver, an orthogonal polarized receiver, a digitizer, a calibration processor, a position measurement reference, and an image processor. A plurality of frequency synthesizers are utilized within a single frequency generator to transmit a fast-stepped synthetic image containing a series of discrete frequencies. A switch is used to select between the outputs of the synthezisers for control of the transmitter's frequency output. With a first synthesizer of a frequency f.sub.1 selected, a second synthesizer is being directed digitally to change to the next step in the frequency stepping sequence, frequency f.sub.2.

Abstract: An anchoring arrangement for lawn edging material of the type used for defining borders of lawns and gardens. The edging material is formed of a resilient, extruded, molded plastic material and includes a relatively thin vertical wall member, which preferably has a retaining flange projecting laterally outward from a lower end thereof. The primary feature of the invention is the provision of hollow tubes that extend through the edging material and are adapted to hold plant seeds until they germinate and mature, so that the roots of the plants will anchor the material in place in the ground.

Abstract: A process for manufacturing containers that are suitable for containing materials that are to be heated by microwave radiation or other heating means includes making a dilute liquid dispersion of quartz and/or glass fibers (very preferably microfibers), depositing them on the interior of a permeable female mold or form, from the dispersion by means of a pressure differential across the female mold, with the liquid passing through the mold, moving a male mold or form which matches the female mold, into and against the container in the female mold, terminating the pressure differential across the female mold, applying a pressure differential across the male mold to release the container from the female mold and press it against the male mold exterior, withdrawing the male mold, with the container held to it, releasing the container from the male mold and sintering the container, to make it form retaining.

Abstract: A bar code reader having a scanned light and a stationary photodetector is disclosed. The photo detector uses a lens having a pyramidal frusta-like body to concentrate light. The input side has a pair of oppositely angles side planes facing opposite extremities of a scanned label. The faces can be used to mount filters to reject ambient light, and a polarizer can be used to reject specular reflection from the scanning laser.