Pressure vessel

• US 3,319,420 A
• Filed: 07/20/1965
• Issued: 05/16/1967
• Est. Priority Date: 07/20/1965
• Status: Expired due to Term

• Current Assignee: American Olaer Incorporated
• Original Assignee: Bernard Mercier
• Inventors: Mercier, Bernard
• Application Number:
  US04/473,434
• Time in Patent Office: 665 Days
• US Class Current: 138/30
• CPC Class Codes: F15B 1/20 fixed to the separating means
• CPC Class Codes: F15B 2201/205 using gas
• CPC Class Codes: F15B 2201/21 using springs
• CPC Class Codes: F15B 2201/3152 the flexible separating means being bladders
• CPC Class Codes: F15B 2201/3156 characterised by their attachment
• CPC Class Codes: F15B 2201/415 Gas ports
• CPC Class Codes: F15B 2201/435 being fixed to the separating means
• CPC Class Codes: F16J 12/00 Pressure vessels in general covers therefor F16J13/00; for particular applications, see the relevant subclasses, e.g. B01J, F17C, G21C

Claims

1. A PRESSURE VESSEL COMPRISING A RIGID CONTAINER HAVING A FLUID PORT AT ONE END, A DEFORMABLE BLADDER OF SUBSTANTIALLY NON-STRETCHABLE MATERIAL POSITIONED IN SAID CONTAINER, SAID BLADDER BEING OF VOLUME AND SHAPE SUBSTANTIALLY THE SAME AS THE CONTAINER AND BEING CLOSED AT ONE END, SAID CLOSED END CARRYING A VALVE MEMBER ADAPTED TO SEAT AGAINST SAID PORT TO CLOSE THE LATTER, RESILIENT MEANS NORMALLY RETAINING SAID VALVE MEMBER SPACED FROM SAID PORT, SAID RESILIENT MEANS HAVING TWO PORTIONS, ONE OF SAID PORTIONS HAVING NORMALLY PRESTRESSED COIL SPRING CONVOLUTIONS AND THE OTHER HAVING NORMALLY UNSTRESSED SPACED COIL SPRING CONVOLUTIONS, SAID FIRST PORTION BEING OF GREATER LENGTH THAN SAID SECOND PORTION.