Patent ID: 8087526

Claim:
A knockdown vessel, consisting of: a cylindrical bladder having a first cylindrical end including a gland, a center cylindrical portion, and a second closed cylindrical end; a rigid cylindrical center barrel section having a circular cross-section, a first frusti-conical edge, and a second frusti-conical edge, the rigid cylindrical center barrel section being sized to encompass the center cylindrical portion of the bladder; a rigid first end cylindrical barrel section having an end wall and sized at an opposing end to longitudinally mate to the first frusti-conical edge of the rigid cylindrical center barrel section and dimensioned to encompass the first cylindrical end of the bladder; a rigid second end cylindrical barrel section having an end wall and sized at an opposing end to longitudinally mate to the second frusti-conical edge of the rigid cylindrical center barrel section and dimensioned to encompass the second cylindrical end of the bladder.