Abstract: A ground based portable seat which is capable of elevating the user up and off the ground and provides for a variable seating position independently or in combination with an object on terrain of varying slopes and undulating surfaces. A frame structure includes first and second generally U-shaped frame members pivotally attached to each other at their open ends and with a sling member suspended between the distal lateral closed ends. The sling member is shorter than a length that allows the pivotal connections to be opened to a pivot angle of 180 degrees magnitude. Placing the two pivotal connections on the ground for use of the seat, makes two point contact with the ground as a base. A third, stabilizing point of ground contact is provided by the user's foot.

Abstract: A seal (10) includes a seal structure (130) for engagement with first (24) and second fluid components (26) in first (84) and second counterbores (88). The seal also includes a holding plate (20, 30) structure for engagement with first (81) and second surfaces (85) of the components. The holding plate structure includes one or more layers that are preferably formed with the outer layers of the seal structure (30). The seal structure preferably includes at least three abutting layers of metal, the inner layer (70) having a hardness that is selected to be greater than the hardness of the first and second outer layers (20, 30). The invention also relates to a method of achieving a metal to metal seal between two relatively hard metal components in a fluid System.

Abstract: A molding tool (10) has a body (20) that can be inserted into a cavity (62) of a component (12) for introducing molding material (72) to form a mold of one or more internal surfaces (60) defining the cavity (62). The molding material (72) is at least partially cured with the tool (10) in place so that the mold (80) and tool (10) are removed from the cavity (62) as a single unit. The tool (10) includes a passage (34) for introducing the molding material (72) into the cavity (62). A pressure device, such as a plunger (50), may be used to force the molding material (72) through the passage (34) and into the cavity (62). The tool (10) also serves to support the mold (80) on a fixture or other structure used to analyze the mold (80) to verify characteristics of the form, such as, for example, an optical comparator.