Static structures (e.g. – buildings) – Shaped or strengthened by fluid pressure – Fluid pressure is subatmospheric
Patent
1977-02-02
1978-10-24
Bell, J. Karl
Static structures (e.g., buildings)
Shaped or strengthened by fluid pressure
Fluid pressure is subatmospheric
52192, 52224, 214 16R, B65G 308
Patent
active
041213890
ABSTRACT:
The present invention discloses a portable, erectile, collapsible storage bin for flowable dry materials, the bin being formed of a flexible, moisture-proof membrane which, when inflated, defines a closed volume having openings for both in-flow and out-flow of material. Said membrane exhibits a conical portion in which said in-flow opening occupies the apex of said cone. There is thus provided a plurality of rigid poles having a height of between two and eight feet, each pole disposed normally to the plane of the ground, each pole equidistantly disposed from each adjacent pole in a circle defined by one radius from the axis of symmetry of said cone. The poles are secured exteriorly to said membrane in order to form thereof an essentially polygonal surface normal to the plane of the ground. There is also provided a plurality of stress-release cables secured to said poles in circumferential relation about the exterior of the membrane in order to provide lateral support against stresses induced by the materials stored in the bin. A plurality of circumferential pockets are formed within the membrane for securing the stress-release cables about the membrane in a fixed relation. Additionally, there is provided a means for erecting said membrane prior to its use wherein said means may comprise either a compressed air input for inflating said membrane in much the nature of a balloon or, alternatively, may comprise a central pole-like support for lifting of the cone portion of the membrane in order to thereby support the entire membrane in a tent-like fashion.
REFERENCES:
patent: 1473845 (1923-11-01), Gardon
patent: 1520569 (1924-12-01), Emerson
patent: 2730150 (1956-01-01), Wunderwald et al.
patent: 3327874 (1967-06-01), Peterschmidt
patent: 3453786 (1969-07-01), Rebarchek
patent: 3475915 (1969-11-01), Caplan
patent: 3539057 (1970-11-01), Bronner
patent: 3728831 (1973-04-01), Bird
patent: 3956816 (1976-05-01), Short
patent: 4015384 (1977-04-01), Barry
Bell J. Karl
Goldberg Richard M.
Jackson David A.
Silverman Mel K.
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