Receptacles – Closures – Motor driven
Patent
1994-06-20
1996-02-13
Elkins, Gary E.
Receptacles
Closures
Motor driven
220216, 220220, B65D 8718, B65D 8840
Patent
active
054906059
ABSTRACT:
An improved storage tank of the type having a bottom, side walls and a floating roof in which the improvement comprises support legs and support sleeves for selectively supporting the floating roof at first and second elevations. The support legs engage the tank bottom and extend upwardly therefrom. The support sleeves are attached to the floating roof and extend downwardly therefrom. The support sleeves surround the support legs and are vertically moveable relative thereto from first positions in which the support sleeves engage the tank bottom to support the floating roof at the first elevation and second positions in which the floating roof may be supported by the support legs at the second elevation. Attached to the support sleeves is a locking member which is horizontally moveable between an unlocked position, permitting unrestricted vertical movement of support sleeves relative to the support legs, and a locked position engageable with the support legs, when the floating roof is at the second elevation, to prevent downward vertical movement of said support sleeves, supporting the floating roof on the support legs.
REFERENCES:
patent: Re29270 (1977-06-01), Nelson
patent: 3319329 (1967-05-01), Knutsen et al.
patent: 3583594 (1971-06-01), Belanger et al.
patent: 3815775 (1974-06-01), Strunc et al.
patent: 4036394 (1977-07-01), Bodley et al.
patent: 5230436 (1993-07-01), Vaughn
patent: 5305904 (1994-04-01), Cutts
patent: 5353941 (1994-10-01), Benvegnu et al.
Berryhill Bill B.
Elkins Gary E.
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