Abstract: A rotatable wireless electrical coupler is disclosed that presents a wireless alternative to mechanical slip rings, such as are used in rotatable mechanical assemblies such as dome cameras. The rotatable wireless electrical coupler is designed to provide for the wireless transfer therethrough of electrical power, video and data signals. A rotatable multi-function transformer of the electrical coupler is designed primarily for the transfer of electrical power therethrough, and can also be used for the transfer of data signals. A rotatable electrical capacitor of the electrical coupler is designed primarily for the transfer of video data signals therethrough, and can also be used for the transfer of control and feedback data signals. In a dome camera, the rotatable wireless electrical coupler transfers power and data signals to and from a rotatable platform/section on which is mounted a video camera, pan and tilt motors and other associated electrical components.

Abstract: A method of producing a silage removal channel. The method comprises the steps of disposing an inflatable tube within an empty silo, inflating the tube, filling the silo with feedstuff, deflating the tube and then withdrawing the same from the interior of the silo to create the silage removal channel within the feedstuff. The created channel is disposed from the uppermost surface of the feedstuff to a discharge port disposed in the exterior wall of the silo. When required feedstuff is introduced into the mouth of the channel, it gravitates through the channel to the discharge port where it may be removed from the silo.