Above-ground portable storage tank
OwnerPeter A. Bartisinventor
Life of this patent
Estimating the term…
Abstract
The present invention relates to an above-ground double wall portable container for storing liquid products. The container has a primary tank for holding liquid, a secondary tank substantially surrounding the primary tank for containing the stored liquid in the event of a failure in the primary tank, a removable cover for closing the secondary tank and a sealable inlet box through which liquid is introduced into and withdrawn from the primary tank. The inlet box houses a screen for removing debris from liquid being introduced into the tank, a suction port for withdrawing liquid from the tank and integral vents for permitting vapors to escape to the atmosphere.
Claims23
An above-ground portable container for storing liquids which comprises a primary tank for holding said liquid to be stored, a secondary tank substantially surrounding said primary tank for containing said stored liquid in the event of the failure of said primary tank, said secondary tank being spaced from said primary tank, a cover for closing said secondary tank, an inlet box attached to said cover through which liquid is introduced into and withdrawn from said primary tank, a conduit extending between said inlet box and said primary tank, said conduit having a first port to which a means for applying suction can be attached, a closed end for protecting an interior surface of said primary tank, and a plurality of inlet ports adjacent said closed end through which said stored liquid can enter said conduit, and said first port being located within said inlet box.
An above-ground portable container for storing liquids which comprises a primary tank for holding said liquid to be stored, a secondary tank substantially surrounding said primary tank for containing said stored liquid in the event of the failure of said primary tank, said secondary tank being spaced from said primary tank, a cover for closing said secondary tank, an inlet box attached to said cover through which liquid is introduced into and withdrawn from said primary tank, and said inlet box having at least one aperture for permitting vapors within said tank to vent to the atmosphere.
A above-ground portable container for storing liquids which comprises a primary tank for holding said liquid to be stored, a secondary tank substantially surrounding said primary tank for containing said stored liquid in the event of the failure of said primary tank, said secondary tank being spaced from said primary tank, a cover for closing said secondary tank, an inlet box attached to said cover through which liquid is introduced into and withdrawn from said primary tank, means for securing said tanks together, each of said tanks comprising an open top tank, said secondary tank having a first flange adjacent said open top and at least one aperture in a sidewall, said primary tank having a second flange which rests upon the upper surface of said first flange and at least one aperture in a sidewall which can be aligned with said at least one aperture in said secondary tank sidewall, said cover having an angled flange having an exterior surface spaced from an interior surface of said primary tank when said cover is in said closed position, said angled flange having at least one aperture which can be aligned with said at least one aperture in each of said tank sidewalls, and said securing means comprising a clip-like retaining device having a first leg which can be inserted into said space between said exterior surface of said angled flange and said interior surface of said primary tank and a second leg with a threaded plug attached thereto and a threaded fastening means whose threads engage said threads in said plug.
An emergency vent valve for releasing an overpressure in a container which comprises:
- a base member having a fluid passageway;
- a cover plate spaced from said base member;
- a valve member for closing said passageway;
- means for guiding movement of said valve member between a closed position and an open position;
- said guiding means being fastened to said cover plate and serving to space said cover plate from said base member and to define a housing with said cover plate and said base member.
Dependencies are inferred from the claim text.