Patent ID: 9052062
Filing Date: 2015-06-09
Classification: B64G,F15B,F17C

Abstract:
1. A liquid storage tank for a spacecraft comprising: a tank wall that encloses a tank space therein and that has a recess on an inner wall surface thereof bounding said tank space, wherein said recess extends circumferentially around said inner wall surface of said tank wall along a first plane on which said tank wall is circular; a membrane of a synthetic polymer material arranged in said tank space so as to divide said tank space into a liquid space and a gas space respectively on opposite sides of said membrane; and a spring ring that has a ring shape on said first plane, and that is made of a spring metal with a spring characteristic, and that has a substantially C-shaped cross-section on a section plane perpendicular to said first plane, wherein said spring ring is received in said recess and clampingly holds a membrane portion of said membrane in a liquid-tight and pressure-tight sealed manner in said recess with said membrane portion clampingly held between said spring ring and an inner surface of said recess, wherein an open side of said C-shaped cross-section of said spring ring faces inwardly into said tank space.