Abstract: A pressure sensor is mounted upon a hydraulic valve body. The sensor has a base which extends into a bore formed in the valve body. The valve body bore is in communication with a pressurized hydraulic fluid. A cover that is removably attached to the valve body encloses the pressure sensor. A circuit substrate is disposed within the cover and electrically connected to the pressure sensor.

Abstract: In a method of creating a seal in a subsurface environment, a plurality of manufactured composite particles are placed in the subsurface environment, the composite particles including a sealant material. The sealant material is hydrated to create a cohesive seal. In a method of controlling erosion of a periodically or continuously inundated surface, a plurality of manufactured composite particles are placed around erosion-control objects. The composite particles include a sealant material which is a cohesive, low-permeability material when hydrated. The sealant material physically stabilizes the erosion-control objects on the surface. The invention also relates to compositions and properties of the composite particles.

Abstract: A grinding guide assembly for grinding or sharpening the carbide surface of a snowmobile wear bar. The grinding guide assembly features a pair of angle adjusters and a support guide that slide together back and forth across a pair of substantially parallel rods. The angle at which the wear bar contacts the grinding surface may be selected while the wear bar is securely clamped to the support guide. The length of the rods may be any desired length to allow the grinding guide assembly the capability to grind or sharpen an object of any length.