Abstract: Disclosed herein is a wrap material feed system of a round baler for forming crop material into a cylindrical bale. The wrap material feed system comprises a first roller, a second roller, a bale formation belt, and a feed pan oriented from a first end adjacent the first roller to a second end adjacent the second roller and a feed pan positioning mechanism oriented to bias the feed pan into engagement with each of the first and second rollers and the bale formation belt. The feed pan comprises one or more runners, at least one guide plate, one or more skid plates, and one or more fasteners comprising a fastener head. The fastener head is positioned at the second end such that a vector representing a first normal force at the second roller intersects the fastener head.

Abstract: A means is discussed for electrically interconnecting, cooling and mechanically supporting a multiplicity of heat producing electronic and/or electrical components which is amenable to automated assembly. A structure is identified which consists of one or more fluid-cooled heatsinks; which are in proximate contact with heat producing components and one or more U-shaped spring clips which mechanically force thermal contact between the heat producing components and heatsinks. In turn, each heatsink contains two fluid-filled cavities separated by a common wall, wherein fluid in the first cavity flows in one direction, while fluid in the second cavity flows in the reverse direction. The components are powered by a bus that compensates for the location of the components, providing an equal voltage drop between a power source and each component. The bus is a flat plate that has been stamped to include slots that increase the voltage drop between selected portions of the bus.

Abstract: This disclosure describes an improved electrical power apparatus for assisting a rider in powering a wheeled vehicle such as a bicycle. The apparatus controllably connects a rechargeable battery to a dc motor engageable with a wheel of the vehicle in a predetermined fashion, such that the wheel is driven with a torque that varies with the vehicle's speed according to a predetermined non-uniform profile. This control advantageously can be achieved by modulating on and off a switch at a duty cycle between 0% and 100%, which is selected to provide a motor torque that decreases monotonically with the vehicle's speed, from a maximum value at zero speed to a predetermined intermediate value at a predetermined intermediate speed, and that remains at that predetermined intermediate value for speeds between the intermediate speed and a predetermined maximum speed. The apparatus further includes a charger for charging the battery using a flyback-type dc-to-dc converter.

Abstract: A system and method for cycling loads and sources can be connected to one or more loads and sources to controllably supply or absorb current with respect thereto. For example, DC voltages can be controllably supplied to each load from a DC bus using a plurality of DC-DC converters. Various DC converter configurations are available including independent, parallel and differential, to expand the types of simulations which can be performed on the load(s).