Thin-walled containers

Claim 2

A double walled container comprising: a. a rigid outer vessel forming the outer wall of said double walled container and b. a liner inserted in said rigid outer vessel, said liner being constructed to expand to conform substantially with the inner surface of said outer vessel using fluid pressure, said liner comprising i. an open-ended, thin-walled tube of stainless steel the end portions of which are bent outwardly to form circumferential flanges projecting substantially at right angles to the wall of the tube, the junction of each flange and the wall of the tube being smoothly curved, and ii. two thin end plates made of stainless steel and of size and shape to span the open ends of the tube, one of the end plates being welded to each of the flanges on the tube along the overlapping portion, close to the radially outer edges of the flanges and of the end plates, the shape of the weld between the tube and the end plates constituting means responsive to fluid pressure for stretching the welding seams between the tube and the end plates to effect weld seams which are substantially flat internally.

Claim 3

the underside of the inwardly turned flange on said stainless steel member is provided with an annular lip which lies concentric with and parallel to the inwardly turned flange on said one of said components; and

Claim 4

the underside of the inwardly turned flange on said stainless steel member is provided with an annular lip which lies concentric with and parallel to the inwardly turned flange on said one of said components; and

Claim 5

an aluminum sleeve surrounding the cylindrical walls of said stainless steel member and sealingly secured thereto, whereby a substantially cylindrical assembly is formed.

Claim 6

an aluminum sleeve surrounding the cylindrical walls of said stainless steel member and sealingly secured thereto, whereby a substantially cylindrical assembly is formed.

Claim 7

the underside of the inwardly turned flange on said stainless steel member is provided with an annular lip which lies concentric with and parallel to the inwardly turned flange on said one of said domes; and

Claim 8

the underside of the inwardly turned flange on said stainless steel member is provided with an annular lip which lies concentric with and parallel to the inwardly turned flange on said one of said domes; and

Claim 9

an aluminum sleeve surrounding the cylindrical walls of said stainless steel member and sealingly secured thereto, whereby a substantially cylindrical assembly is formed.

Claim 10

an aluminum sleeve surrounding the cylindrical walls of said stainless steel member and sealingly secured thereto, whereby a substantially cylindrical assembly is formed.

Claim 11

the underside of the inwardly turned flange on said stainless steel member is provided with an annular lip which lies concentric with and parallel to the inwardly turned flange in said end plate; and

Claim 12

the underside of the inwardly turned flange on said stainless steel member is provided with an annular lip which lies concentric with and parallel to the inwardly turned flange in said end plate; and

Claim 13

an aluminum sleeve surrounding the cyliNdrical walls of said stainless steel member and sealingly secured thereto, whereby a substantially cylindrical assembly is formed.

Claim 14

an aluminum sleeve surrounding the cyliNdrical walls of said stainless steel member and sealingly secured thereto, whereby a substantially cylindrical assembly is formed.

Claim 15

A liner as claimed in claim 1 and further comprising an entry boss mounted on one of said end plates, said entry boss comprising:

Claim 16

A liner as claimed in claim 2 wherein:

Claim 17

said entry boss is welded to said one of said domes where the inwardly turned flange on said one of said domes and the annular lip on said stainless steel member abut.

Claim 18

said entry boss is welded to said one of said domes where the inwardly turned flange on said one of said domes and the annular lip on said stainless steel member abut.

Claim 19

said entry boss is welded to said one of said components where the inwardly turned flange on said one of said components and the annular lip on said stainless steel member abut.

Claim 20

said entry boss is welded to said one of said components where the inwardly turned flange on said one of said components and the annular lip on said stainless steel member abut.

Claim 21

said entry boss is welded to said end plate where the inwardly turned flange on said end plate and the annular lip on said stainless steel member abut.

Claim 22

said entry boss is welded to said end plate where the inwardly turned flange on said end plate and the annular lip on said stainless steel member abut.

Claim 23

A double walled container comprising: a. a rigid outer vessel forming the outer wall of said double walled container and b. a liner inserted in said rigid outer vessel, said liner being constructed to expand to conform substantially with the inner surface of said outer vessel using fluid pressure, said liner comprising i. an open-faced, thin-walled upper dome of stainless steel the rim of which is bent outwardly to form a circumferential flange projecting substantially at a right angle to the wall of the upper dome, the junction of the flange and the wall of the upper dome being smoothly curved, and ii. an open-faced, thin-walled lower dome of stainless steel the rim of which is bent outwardly to form a circumferential flange projecting substantially at a right angle to the wall of the lower dome, the junction of the flange and the wall of the lower dome being smoothly curved, the lower dome being of size and shape to span the open face of the upper dome with the circumferential flanges of each over-lapping, the upper and lower domes being welded to each other along the over-lapping portion of their respective flanges, the shape of the weld between the upper and lower domes constituting means responsive to fluid pressure for stretching the welding seams between the upper and lower domes to effect weld seams which are substantially flat internally.

Claim 24

A double walled container comprising: a. a rigid outer vessel forming the outer wall of said double walled container and b. a liner inserted in said rigid outer vessel, said liner being constructed to expand to conform substantially with the inner surface of said outer vessel using fluid pressure, said liner comprising i. an open-faced, thin-walled upper dome of stainless steel the rim of which is bent outwardly to form a circumferential flange projecting substantially at a right angle to the wall of the upper dome, the junction of the flange and the wall of the upper dome being smoothly curved, and ii. an open-faced, thin-walled lower dome of stainless steel the rim of which is bent outwardly to form a circumferential flange projecting substantially at a right angle to the wall of the lower dome, the junction of the flange and the wall of the lower dome being smoothly curved, the lower dome being of size and shape to span the open face of the upper dome with the circumferential flanges of each over-lapping, the upper and lower domes being welded to each other along the over-lapping portion of their respective flanges, the shape of the weld between the upper and lower domes constituting means responsive to fluid pressure for stretching the welding seams between the upper and lower domes to effect weld seams which are substantially flat internally.

Claim 25

A liner as claimed in claim 4 and further comprising an entry boss mounted on one of said domes, said entry boss comprising:

Claim 26

A liner as claimed in claim 5 wherein:

Claim 27

A double walled container comprising: a. a rigid outer vessel forming the outer wall of said double walled container and b. at least two thin-walled components separately manufactured of stainless steel at least one of which has at least one edge portion bent outwardly to form a flange projecting substantially at a right angle to the wall of the component, the junction of the flange and the component of which it is a part being smoothly curved, the components being of size and shape to engage each other in facing relationship with the flange over-lapping a mating surface on the other component and being welded to each other along the over-lapping portion of the flange and the mating surface on the other component, the shape of the weld between the components constituting means responsive to fluid pressure for stretching the welding seam between the components to effect a weld seam which Is substantially flat internally.

Claim 28

A double walled container comprising: a. a rigid outer vessel forming the outer wall of said double walled container and b. at least two thin-walled components separately manufactured of stainless steel at least one of which has at least one edge portion bent outwardly to form a flange projecting substantially at a right angle to the wall of the component, the junction of the flange and the component of which it is a part being smoothly curved, the components being of size and shape to engage each other in facing relationship with the flange over-lapping a mating surface on the other component and being welded to each other along the over-lapping portion of the flange and the mating surface on the other component, the shape of the weld between the components constituting means responsive to fluid pressure for stretching the welding seam between the components to effect a weld seam which Is substantially flat internally.

Claim 29

A liner as claimed in claim 7 and further comprising an entry boss mounted on one of said components, said entry boss comprising:

Claim 30

A liner as claimed in claim 8 wherein: