Rectangular dewar

• US 3,319,433 A
• Filed: 05/24/1966
• Issued: 05/16/1967
• Est. Priority Date: 05/24/1966
• Status: Expired due to Term

• Current Assignee: George Matlow, Richard S. Pauliukonis
• Original Assignee: George Matlow, Richard S. Pauliukonis
• Inventors: Pauliukonis, Richard S., Matlow, George
• Application Number:
  US04/552,576
• Time in Patent Office: 357 Days
• US Class Current: 62/45.1
• CPC Class Codes: F17C 2201/0119 with flat end-piece
• CPC Class Codes: F17C 2203/032 Multi-sheet layers
• CPC Class Codes: F17C 2203/0391 by vacuum
• CPC Class Codes: F17C 2203/0629 Two walls
• CPC Class Codes: F17C 2205/0111 Boxes
• CPC Class Codes: F17C 2205/0142 bundled in parallel
• CPC Class Codes: F17C 2205/0146 with details of the manifold
• CPC Class Codes: F17C 2205/0314 breakable, e.g. with burst discs
• CPC Class Codes: F17C 2205/0332 Safety valves or pressure relief valves
• CPC Class Codes: F17C 2205/0338 Pressure regulators
• CPC Class Codes: F17C 2205/0394 in direct contact with the pressure vessel
• CPC Class Codes: F17C 2205/0397 on both sides of the pressure vessel
• CPC Class Codes: F17C 2223/033 Small pressure, e.g. for liquefied gas
• CPC Class Codes: F17C 2250/0408 Level of content in the vessel
• CPC Class Codes: F17C 2250/072 Action when predefined value is reached
• CPC Class Codes: F17C 2260/015 Facilitating maintenance
• CPC Class Codes: F17C 3/08 by vacuum spaces, e.g. Dewar flask for household use A47J41/02

Claims

1. A DEWAR INCLUDING OUTER SHELL MEANS COMPRISING TOP AND BOTTOM CLOSURE MEANS AND A SERIAL ARRAY OF TWO OR MORE OUTER GENERALLY PARALLEL INTERSECTING CYLINDERS EXTENDING BETWEEN SAID TOP AND BOTTOM CLOSURE MEANS, EACH ADJACENT PAIR OF OUTER CYLINDERS IN THE ARRAY BEING JOINED ALONG TWO LONGITUDINAL SEAMS WITH THE WALL OF ONE MEMBER OF THE PAIR BEING ANNULARLY INTERRUPTED BETWEEN THE SEAMS AND THE WALL OF THE OTHER MEMBER OF THE PAIR CONTINUING ANNULARLY BETWEEN THE SEAMS TO PROVIDE AN INTERIOR CROSS-BRACING WALL PORTION NEITHER OF WHOSE FACES IS EXPOSED TO THE EXTERIOR OF THE OUTER SHELL MEANS, INNER SHELL MEANS COMPRISING AN ARRAY OF NON-INTERSECTING INNER CLOSED-END CYLINDERS WITHIN THE OUTER CYLINDERS, AND FLUID LINE MEANS COMMUNICATING BETWEEN THE EXTERIOR OF THE DEWAR AND THE INTERIORS OF THE INNER CYLINDERS.