Abstract: The production of a bearing surface by coating a known bearing material directly on the surface of a gear bore. A process of coating bearing materials directly onto the surface of a gear and the product thereof. The surface is preferably the inner bore surface of a planet gear. The coating methods include sputtering and vapor deposition. The bearing material applied as a coating is preferably a copper-lead composition. The resultant gear having a bearing coating can be useful in any high density, high efficiency epicyclic gear train for aircraft, marine or land based power transmissions.

Abstract: A portable trench barrier is capable of greatly reducing the number of beetles migrating into a cultivated area, such as a field of potato plants. The device comprises a series of linear barrier sections and connector pieces joined together to enclose and protect a cultivated area. Each linear barrier section comprises an extruded plastic section having (a) an elongated floor section, (b) a pair of continuous leg portions extending downwardly from the side edges of the floor portion. The leg portions are adapted to penetrate the soil and form a continuous sub-surface barrier. A pair of opposed upwardly inclined elongated ramp portions extending upwardly and inwardly from the side edges of the floor portion, these ramp portions terminating in downwardly curved free edge portions having smooth outer surfaces with the curved free edge portions of the opposed ramp portions forming therebetween a gap having a width of up to about 20 mm.

Abstract: The production of a bearing surface by coating a known bearing material directly on the surface of a gear bore. A process of coating bearing materials directly onto the surface of a gear and the product thereof. The surface is preferably the inner bore surface of a planet gear. The coating methods include sputtering and vapor deposition. The bearing material applied as a coating is preferably a copper-lead composition. The resultant gear having a bearing coating can be useful in any high density, high efficiency epicyclic gear train for aircraft, marine or land based power transmissions.

Abstract: A thermostat assembly for an engine cooling system having a coolant flow passage extending from an inlet connected to the engine and an outlet connected to the engine radiator, a thermostat valve positioned in the inlet to control the flow of fluid, a bleed valve mounted in an air bypass passage to allow air past the thermostat valve during filling, and an integral fill passage through which the whole cooling system may be filled; the fill inlet being the highest point in the housing, the bleed valve being positioned at a level higher than the thermostat valve so that air is completely purged from the system during filling; a further separate air vent passage communicating with the bypass passage to vent air from the top of the engine to which the housing is fixed.