Abstract: The present invention is a barrage jammer with contoured amplitude and an associated method for barrage jamming with contoured amplitude. In a standard prior art barrage jammer, the amplitude of the RF signal is independent from the ambient spectral environment. Alternatively, in a barrage jammer according to the current invention, the ambient spectral environment is detected, processed, and a contoured amplitude plan is developed based on the ambient environmental spectrum data. The barrage jammer transmit signal is transmitted in accordance with the contour amplitude plan. The invention is particularly useful when deployed in a Managed Access Service (MAS) system or as a jamming system. In particular, such a system can be used in a facility (such as a prison, school, government building, etc) to prevent cellphone usage.

Abstract: A jamming or MAS system is provided having multiple transmit antennas for transmitting respective transmit signals with spatial diversity to reduce multipath fading. The jamming or MAS communication system communicates with at least one receiver for receiving the transmit signals with no additional processing required at the receiver. In some embodiments, the jamming or MAS communication system includes an associated receiver for receiving and analyzing various signals. The jamming or MAS communication system in the present invention is able to help reduce the effects of multipath fading without modifications to the receiver. Prior art attempts to reduce the effects of multipath fading require some form of additional processing at the receiver. The invention is particularly useful when deployed in a Managed Access Service (MAS) system or a jamming system. In particular, such a system can be used in a facility (such as a prison, school, government building, etc) to prevent cellphone usage.

Abstract: The present invention is a barrage jammer with contoured amplitude and an associated method for barrage jamming with contoured amplitude. In a standard prior art barrage jammer, the amplitude of the RF signal is independent from the ambient spectral environment. Alternatively, in a barrage jammer according to the current invention, the ambient spectral environment is detected, processed, and a contoured amplitude plan is developed based on the ambient environmental spectrum data. The barrage jammer transmit signal is transmitted in accordance with the contour amplitude plan. The invention is particularly useful when deployed in a Managed Access Service (MAS) system or as a jamming system. In particular, such a system can be used in a facility (such as a prison, school, government building, etc) to prevent cellphone usage.

Abstract: A communication system is provided having multiple transmit antennas for transmitting respective transmit signals with spatial diversity to reduce multipath fading. The communication system communicates with at least one receiver for receiving the transmit signals with no additional processing required at the receiver. In some embodiments, the communication system includes an associated receiver for receiving and analyzing various signals. The communication system in the present invention is able to help reduce the effects of multipath fading without modifications to the receiver. Prior art attempts to reduce the effects of multipath fading require some form of additional processing at the receiver. The invention is particularly useful when deployed in a Managed Access Service (MAS) system or a jamming system. In particular, such a system can be used in a facility (such as a prison, school, government building, etc) to prevent cellphone usage.

Abstract: A communication system is provided comprising a transmitter coupled to a switch, which is further coupled to at least two antennas for switching the transmit signal to one of the antennas, with no feedback. The communication system further comprises at least one receiver for receiving the transmitted signal. The communication system in the present invention is able to help mitigate the effects of multipath. Previous attempts to mitigate the effects of multipath suffer from various problems: increased complexity needed to measure channel parameters and a feedback loop to switch the transmit antenna based on the parameters. The system is particularly useful when deployed in a MAS system or a jamming system.

Abstract: A communication system is provided for use of cinder block to re-radiate an RF signal. The system overcomes the limitations of prior art techniques which attempt to work either through or around the cinder block or concrete as an RF obstruction. In contrast, the system of the present invention uses the cinder block as a re-radiator for the RF signal. Although cinder block or concrete (such as a cinder block or concrete wall) has been described as the building material used to re-radiate, it is understood by those of ordinary skill in the art that the same technique can be used with building materials other than cinder block (e.g., concrete or other materials instead of cinder block). The system is particularly useful when deployed in a MAS system or a jamming system in a prison environment. In this type of deployment, the cinder block or concrete can either be used to re-radiate TX signals from a BTS system or to re-radiate jamming signals from a jammer.

Abstract: A communication system is provided comprising a transmitter coupled to a switch, which is further coupled to at least two antennas for switching the transmit signal to one of the antennas, with no feedback. The communication system further comprises at least one receiver for receiving the transmitted signal. The communication system in the present invention is able to help mitigate the effects of multipath. Previous attempts to mitigate the effects of multipath suffer from various problems: increased complexity needed to measure channel parameters and a feedback loop to switch the transmit antenna based on the parameters. The system is particularly useful when deployed in a MAS system or a jamming system.

Abstract: A T-shaped electrically insulated member for securing to rails having electric current passing therethrough. The electrically insulated rail member includes a metallic core and an electrically insulating material encasing the metallic core. The electrically insulated rail member can be used as a gauge plate or a switch plate. Bushings are received by the electrically insulated rail member for receipt of fasteners secured to adjacent rail members. Also disclosed is a method for manufacturing the electrically insulated rail member.

Abstract: A T-shaped electrically insulated member for securing to rails having electric current passing therethrough. The electrically insulated rail member includes a metallic core and an electrically insulating material encasing the metallic core. The electrically insulated rail member can be used as a gauge plate or a switch plate. Bushings are received by the electrically insulated rail member for receipt of fasteners secured to adjacent rail members. Also disclosed is a method for manufacturing the electrically insulated rail member.

Abstract: A T-shaped electrically insulated member for securing to rails having electric current passing therethrough. The electrically insulated rail member includes a metallic core and an electrically insulating material encasing the metallic core. The electrically insulated rail member can be used as a gauge plate or a switch plate. Bushings are received by the electrically insulated rail member for receipt of fasteners secured to adjacent rail members. Also disclosed is a method for manufacturing the electrically insulated rail member.

Abstract: A T-shaped electrically insulated member for securing to rails having electric current passing therethrough. The electrically insulated rail member includes a metallic core and an electrically insulating material encasing the metallic core. The electrically insulated rail member can be used as a gauge plate or a switch plate. Bushings are received by the electrically insulated rail member for receipt of fasteners secured to adjacent rail members. Also disclosed is a method for manufacturing the electrically insulated rail member.

Abstract: Apparatus for unwinding rolls of material such as fabric and the like including a frame and a generally V-shaped cradle pivotally attached to the frame for supporting the material to be unwound. The cradle includes first and second belt support structures for supporting multiple driven endless belts. The endless belts form the driving and support surface for the material roll to be unwound. The apparatus is pivotal between a loading portion and an unwind position.

Abstract: An animated jigsaw puzzle in which a support base carries in fixed relationship a variety of jigsaw puzzle pieces in a fixed configuration when assembled, the animation includes portions of the jigsaw puzzle pieces which are adapted to move in various mechanical manners, and a drive linkage connecting the animated motion to an underlying drive train contained below the support tray coupled through a drive belt to a prime mover for use by a young child.

Abstract: A container loader and transport assembly is disclosed which includes a horizontal bed formed for support of a container thereon during transport of the container and loader formed for lifting the container onto the bed from a support surface and lowering the container from the bed to the support surface. The loader is movably mounted to the bed and preferably includes a movable carriage and a lifting mechanism mounted to the carriage. The loader is formed to lift the container and lower it while maintaining the container in substantially horizontal orientation and preferably the carriage is mounted for translation on a pair of extensible rails that can be extended and retracted from an end or from the sides of the container support bed. A method for employing the motor and transport assembly is also disclosed.

Abstract: A tension control mechanism for cloth delivered from the loom and the like to a cloth roll carried by take-up mechanism positioned in front of the loom is illustrated wherein a sensing device engages the cloth coming from the loom under relatively light tension for driving motor control means responsive to movement of the sensor imparted thereto by variation in cloth tension.

Abstract: A doffing mechanism is illustrated wherein a cloth roll engagable means is normally carried in aligned laterally spaced relation to the cloth roll with driving means which are actuated by manually raising the cloth roll engaging means to be driven by the take-up mechanism in a reverse direction to forcefully move the cloth roll engaging means for doffing the full cloth roll into a cart positioned beside the take-up rolls for receiving and carrying away the cloth roll.