Claims
- 1. A system for the underground storage of liquid product and delivery of said product to an above-ground dispensing device, comprising:
- an underground storage tank provided with at least first and second fittings, to receive a means for filling said storage tank and means for pumping product from said storage tank to said dispensing means, respectively, both said fittings being entirely contained within a secondary containment chamber mounted on and sealed to said storage tank,
- fill means comprising an adaptor in sealed communication with said first fitting, said adaptor bearing an outer containment pipe which, together with said containment chamber completely encloses a riser for attachment to a means for delivering a product to said riser, said riser being in fluid communication with said storage tank,
- means for pumping product from said storage tank to said above-ground dispensing means, said pumping means being entirely contained within a shell having a pressure tight, removable lid providing access to said pumping means, said shell being in pressure tight liquid communication with said second fitting and passing through and sealed to said secondary containment chamber,
- piping means being attached to said pump means and penetrating through and sealed to a wall of said shell, said piping means comprising concentric primary piping and outer containment piping, said piping means terminating at a point for connection to said above-ground dispensing means, which point of termination is enclosed by a drip pan coterminus with the length and width of said dispensing means.
- 2. The system of claim 1, wherein the storage tank is comprised of concentric inner and outer walls, with an annular space therebetween.
- 3. The system of claim 2, wherein said annular space is occupied by a load transmitting material through which a fluid selected from the group consisting of aqueous solutions and petroleum products will pass under the influence of gravity.
- 4. The system of claim 2, wherein said outer wall is spaced from said inner wall by external ribs integral with said inner wall.
- 5. The system of claim 4, wherein said means for urging said interior sleeve upward comprises springs fixably mounted on the interior of said containment pipe.
- 6. The system of claim 5, wherein said drainage holes lead directly to the interior of said storage tank, which said interior is undivided.
- 7. The system of claim 5, wherein said drain holes are in fluid communication with piping which empties into a recovery tank separate from said storage tank.
- 8. The system of claim 1, wherein said outer containment pipe of said fill means further comprises an interior sleeve slideably mounted therein, exterior to and concentric with said riser, said interior sleeve being mounted on means for urging said sleeve upward such that said interior sleeve is urged against a cover which may be sealed to said containment pipe, and when said cover is removed, said interior sleeve is urged against a shroud overlaying said fill means.
- 9. The system of claim 1, wherein the portion of said tank which, when installed, is uppermost, is dome-shaped, and said containment chamber is placed thereon and trapezoidal in shape, said containment chamber comprising a plurality of drain holes at the lowest points of said containment chamber, when said tank is installed.
- 10. The system of claim 9, wherein said drain holes drain directly through said storage tank into a recovery tank integral with said storage tank but separated from that portion of said storage tank with which said fill means riser is in fluid communication with by an interior wall.
- 11. A system for the underground storage of liquid products and delivery of said product to an above-ground dispensing device, comprising: an underground storage tank provided with at least first and second fittings, to receive a means for filling said storage tank and means for pumping product from said storage tank to said dispensing means, respectively, both said fittings being-entirely contained within a secondary containment chamber mounted on and sealed to said storage tank, fill means comprising an adapter in sealed communication with said first fitting, said adapter bearing an outer containment-pipe which, together with said containment chamber completely encloses a riser for attachment to a means for delivering a product to said riser, said riser being in fluid communication with said storage tank,
- means for pumping product from said storage tank to said above-ground dispensing means, said means for pumping being in fluid communication with said above-ground dispensing means.
- 12. A system for the underground storage of a liquid product and delivery of said product to an above-ground dispensing device, comprising: an underground storage tank provided with at least first and second fittings, to receive a means for filling said storage tank and means for pumping product from said storage tank to said dispensing means, respectively, both said fittings being entirely contained within a secondary containment chamber mounted on and sealed to said storage tank, fill means for filling said storage tank with liquid product,
- means for pumping product from said storage tank to said above-ground dispensing means, said pumping means being entirely contained within a shell having a pressure tight, removable lid providing access to said pumping means, said shell being in pressure tight liquid communication with said second fitting and passing through and sealed to said secondary containment chamber,
- piping means being attached to said pump means and penetrating through and sealed to a wall of said shell, said piping means being in fluid communication with said dispensing means.
Parent Case Info
This is a continuation of application Ser. No. 07/317,565, filed on Mar. 1, 1989 now U.S. Pat. No. 4,958,957.
US Referenced Citations (10)
Continuations (1)
|
Number |
Date |
Country |
Parent |
317565 |
Mar 1989 |
|