Abstract: A method and apparatus for maintaining the single phase integrity of a deep well formation sample that is removed to the surface comprises a vacuum jacket insulated single working cylinder divided by two free pistons into three variable volume chambers. The intermediate chamber is pre-charged with a fixed quantity of high pressure gas. Wellbore fluid freely admitted to one end chamber bears against one free piston to further compress the gas. The formation sample is pumped into the other end chamber to first, displace the wellbore fluid from the first end chamber and, sequentially, to further compress the gas to preserve the sample phase state upon removal to the surface.

Abstract: A guide device securable to a hand-held router facilitates the guiding of the router across a thin workpiece so that the rotatable cutting tool of the router severs the workpiece along a prescribed cutting path and so that the prescribed cutting path corresponds with an edge of an object underlying the workpiece. The guide device includes a platen body which moves between the workpiece and the underlying object as the router is moved across the workpiece, and the body includes a lengthy abutment surface positionable in abutting engagement with the edge of the underlying object. When moving the router across the workpiece while maintaining the abutment surface in abutting relationship with the edge of the underlying object, the cutting tool of the router moves in cutting engagement with the workpiece along the prescribed cutting path.

Abstract: A cutting apparatus for forming a V-sectioned groove in a workpiece includes a support surface, a pair of guide rails mounted in parallel relationship with one another and in relatively low relationship with the support surface and a platform mounted upon the guide rails for movement relative to and along the length of the rails. The apparatus further includes a cutter carried by the platform for movement therewith relative to and along the length of the guide rails and including a tipped rotatable cutting tool. The cutter is supported by the platform so that the rotational axis of the cutting tool is oriented generally perpendicular to the support surface and so that the tip thereof is placed relatively close to the support surface. The cutter is adapted to form a V-sectioned groove in a workpiece positioned upon the support surface as the cutting tool is rotated and moved in cutting engagement with the workpiece and as the cutter and platform are moved relative to and along the guide rails.

Abstract: An apparatus and associated method for grooving a relatively rigid planar laminate sheet structure of the type having a relatively rigid substrate layer and a flexible sheet layer fixedly overlying the substrate layer to facilitate the folding of the sheet structure about a right corner defined by two planar surfaces of a polygonal panel during a laminating operation utilizes a circular rotatable grooving blade having teeth having cutting edges providing in cross-section, a V having an apex directed generally radially outwardly of the blade and further utilizes a member associated with the blade for defining first and second guide planes. The teeth cutting edges are adapted to form a V-sectioned groove in the laminate sheet structure as the blade is rotated within a plane oriented generally perpendicular to the plane of the laminate sheet and moved in operative grooving engagement across the laminate sheet.