초록 ▼

Disclosed herein is a device for capturing and retaining fluids such as gasoline which is split while filling a main storage tank, for example, in a gas station. The device includes a manhole having a floor through which the fill pipe for the main storage tank extends, an auxiliary or holding tank c

Disclosed herein is a device for capturing and retaining fluids such as gasoline which is split while filling a main storage tank, for example, in a gas station. The device includes a manhole having a floor through which the fill pipe for the main storage tank extends, an auxiliary or holding tank communicating with the manhole, and a valve and conduit associated with the holding tank to provide a fail-safe operation of the holding tank. Further, the main fill pipe is provided with a gasket at the juncture where it passes through the manhole floor constructed in such a manner that the standpipe can translate vertically within the hole disposed on the manhole floor due to seasonal change while the integrity of the gasket is still maintained.

대표청구항 ▼

A device for capturing and retaining fluid spilled while filling a main storage tank having a fill pipe comprising, in combination, a manhole including a floor having an opening and a side wall defining an interior, said manhole having an open upper end for access to said manhole interior, said fill

A device for capturing and retaining fluid spilled while filling a main storage tank having a fill pipe comprising, in combination, a manhole including a floor having an opening and a side wall defining an interior, said manhole having an open upper end for access to said manhole interior, said fill pipe extending upwardly from said main storage tank into said manhole interior through said floor opening for access through said manhole open end, means for sealing the intersection between said fill pipe and said manhole floor opening, said sealing means being adapted to permit relative movement between said fill pipe and said manhole floor, a holding tank, a drain pipe having a lower end communicating with said holding tank and an upper end opening into said manhole floor whereby fluid spilt onto said manhole floor during the filling of said main storage tank flows into said drain pipe upper end, down said drain pipe and into said holding tank.