Yoke type isostatic press

Claim 2

A high pressure vessel comprising an upstanding vessel body open at both ends, an upper and a lower plug type closure for the open ends of the vessel body, means external to the vessel body foR retaining the upper and lower closures in a sealed relationship with the ends of the vessel body, means for internally pressurizing the sealed vessel body, and hydraulic means for applying the pressure within the sealed vessel body to exert an upward, lifting force upon the vessel body.

Claim 3

A high pressure vessel comprising an upstanding, open ended vessel body, an upper and a lower closure for the vessel body, an upper seal between the upper closure and the upper open end of the vessel body and a lower seal between the lower closure and the lower open end of the vessel body, an elastically deformable support for retaining the upper closure in a sealed relationship with the vessel body, the upper and lower seals being so dimensioned relative to each other that the radial, cross-sectional area bounded by the lower seal exceeds the radial, cross-sectional area bounded by the upper seal by at least an amount equal to the quotient of the weight of the vessel body divided by a predetermined pressure which is less than the minimum pressurization necessary to cause the upper closure retaining support to elastically deform.

Claim 4

A high pressure vessel comprising an upstanding, open ended vessel body, an upper and a lower closure for the vessel body, an upper seal between the upper closure and the upper open end of the vessel body and a lower seal between the lower closure and the lower open end of the vessel body, an elastically deformable support for retaining the upper closure in a sealed relationship with the vessel body, the upper and lower seals being so dimensioned relative to each other that the radial, cross-sectional area bounded by the lower seal exceeds the radial, cross-sectional area bounded by the upper seal by at least an amount equal to the quotient of the weight of the vessel body divided by a predetermined pressure which is less than the minimum pressurization necessary to cause the upper closure retaining support to elastically deform.

Claim 5

A high pressure vessel comprising an upstanding, hollow, cylindrical vessel body open at both ends and having an annular cross-sectional enlargement of its interior diameter intermediate its ends, an upper plug type closure for the vessel body, a lower plug type closure for the vessel body beneath the cross-sectional enlargement in the vessel body, and an elastically deformable means for retaining the upper and the lower closures in a sealed relationship with the vessel body, the radial magnitude of the enlargement in the vessel body interior diameter being at least equal to the quotient of the weight of the vessel body in pounds divided by the product of a predetermined pressure which is less than the minimum pressurization necessary to cause the retaining means to elastically deform times the average diameter of the vessel body in inches times the mathematical constant pi.

Claim 6

A high pressure vessel comprising an upstanding, hollow, cylindrical vessel body open at both ends and having an annular cross-sectional enlargement of its interior diameter intermediate its ends, an upper plug type closure for the vessel body, a lower plug type closure for the vessel body beneath the cross-sectional enlargement in the vessel body, and an elastically deformable means for retaining the upper and the lower closures in a sealed relationship with the vessel body, the radial magnitude of the enlargement in the vessel body interior diameter being at least equal to the quotient of the weight of the vessel body in pounds divided by the product of a predetermined pressure which is less than the minimum pressurization necessary to cause the retaining means to elastically deform times the average diameter of the vessel body in inches times the mathematical constant pi.

Claim 7

A high pressure vessel as recited in claim 3 wherein the radial magnitude of the enlargement is at least equal to the quotient of the weight of the vessel body in pounds divided by the product of 2000 p.s.i. times the average diameter of the vessel body in inches times the mathematical constant pi.

Claim 8

A high pressure vessel comprising an upstanding, hollow vessel body open at both ends, an upper plug type closure, a lower plug type closure, means for retaining the upper and the lower closures in a sealed relationship with the vessel body, a plurality of hydraulic cylinders affixed to the exterior vessel body wall at equal intervals, each of the cylinders having an internal piston and a piston rod extending from the cylinders, means for restraining the projecting ends of the piston rods so as to be longitudinally immovable relative to the lower closure, and means for injecting fluid under pressure simultaneously into the cylinders and into the hollow interior of the vessel body while it is in a sealed relationship with the closures, the combined cross-sectional area of the pistons being such that for a predetermined fluid pressure within the cylinders, which is less than the minimum pressure necessary within the sealed vessel body to cause the closure retaining means to deform, the cylinders will exert a lifting force on the vessel body at least equal to the weight of the vessel body.

Claim 9

A high pressure vessel comprising an upstanding, hollow vessel body open at both ends, an upper plug type closure, a lower plug type closure, means for retaining the upper and the lower closures in a sealed relationship with the vessel body, a plurality of hydraulic cylinders affixed to the exterior vessel body wall at equal intervals, each of the cylinders having an internal piston and a piston rod extending from the cylinders, means for restraining the projecting ends of the piston rods so as to be longitudinally immovable relative to the lower closure, and means for injecting fluid under pressure simultaneously into the cylinders and into the hollow interior of the vessel body while it is in a sealed relationship with the closures, the combined cross-sectional area of the pistons being such that for a predetermined fluid pressure within the cylinders, which is less than the minimum pressure necessary within the sealed vessel body to cause the closure retaining means to deform, the cylinders will exert a lifting force on the vessel body at least equal to the weight of the vessel body.