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US 5,263,794 AGranted
Environmentally safe underground piping system
AssigneeEnviron Products, Inc.
InventorMichael C. Webb
Life of this patent
Estimating the term…
Abstract
An environmentally safe underground piping system which employes a inner flexible fluid supply piping system contained within an outer non-flexible containment piping system which interconnects a series of surface access chambers. Both the flexible supply and and non-flexible containment piping systems are interconnected by a series of directional fittings and couplings. The containment system may be installed, integrity tested, inspected and backfilled, prior to installation of the supply piping system which allows for a faster and more economical installation.
Claims25
A secondarily contained underground piping system which connects the dispensing pump of an underground storage tank to an above ground terminating dispensing unit comprising:
- a) an originating chamber installed around the dispensing pump located at the beginniing of a pipe line, providing a means of surface access, secondary containment and leak collection;
- b) a junction chamber installed under an above ground dispensing unit located within the piping line providing a means of surface access, secondary containment and leak collection;
- c) a terminating chamber installed under an above ground dispensing unit located at the end of the piping line, providing a means of surface access, secondary containment and leak collection;
- d) a non-flexible containment pipe section, comprising a plurality of straight, non-flexible pipe lengths, joined together by coupling means having an inside diameter of sufficient size, and a directional bend radious of sufficient length to permit a flexible supply pipe section to be inserted from one end to the other, said non-flexible containment piping sections being interconnected to said chambers through openings in the side wall of the chambers;
- e) a flexible supply pipe section having couplings installed on each end as a means of interconecting one plumbing assembly to the next through the non-flexible containment pipe section;
- f) a sealing device, providing a means of mechanically sealing all pipe entries and exit openings located in the side walls of the chambers, to the annular wall of the non-flexible containment pipe section, whereby the joint is liquid tight and secure;
- g) an originating plumbing assembly providing an interface connecting the dispensing pump in the originating chamber;
- h) a junctioin plumbing assembly providing an interface for the dispensing unit and flexible pipe sections, connected to the above ground dispensing unit, by means of a safety valve, contained within a junction dispenser chamber;
- and
- i) a terminating plumbing assembly providing an interface for the tank dispensing pump and flexible primary supply pipe section.
7 more elements
A secondarily contained underground piping system which connects the dispensing pump of an underground storage tank to an above ground terminating dispensing unit comprising:
- a) an originating chamber installed around the dispensing pump located at the beginning of a pipe line, providing a means of surface access, secondary containment and leak collection;
- b) a junction chamber installed under an above ground dispensing unit located within the piping line providing a means of surface access, secondary containment and leak collection;
- c) a terminating chamber installed under an above ground dispensing unit located at the end of the piping line, providing a means of surface access, secondary containment and leak collection;
- d) a non-flexible containment pipe section, comprising a plurality of straight, non-flexible pipe lengths, joined together by coupling means having an inside diameter of sufficient size, and a directional bend radius of sufficient length to permit a flexible supply pipe section to be inserted from one end to the other, said non-flexible containment piping sections being interconnected to said chambers through openings in the side wall of the chambers;
- e) a flexible supply pipe section having couplings installed on each end as a means of interconnecting one plumbing assembly to the next through the non-flexible containment pipe section;
- f) a sealing device, providing a means of mechanically sealing all pipe entries and exit openings located in teh side walls of the chambers, to the annular wall of the non-flexible containment pipe section, whereby the joint is liquid tight and secure;
- g) an originating plumbing assembly providing an interface connecting the dispensing pump in the originating chamber;
- h) a junction plumbing assembly providing an interface for the dispensing unit and flexible pipe sections, connected to the above ground dispensing unit, by means of a safety valve, contained within a junction dispenser chamber;
- and
- i) a terminating plumbing assembly providing an interface for the tank dispensing pump and flexible primary supply pipe section.
7 more elements
A secondarily contained underground piping system which connects the dispensing pump of an udnerground storage tank to an above ground terminating dispensing unit comprising:
- a) an originating chamber installed around the dispensing pump located at the beginning of a pipe line, providing a means fo surface access, secondary containment and leak collection;
- b) a junction chamber installed under an above ground dispensing unit located within the piping line providing a means of surface access, secondary containment and leak collection;
- c) a terminating chamber installed under an above ground dispensing unit located at the end of the piping line, providing a means of surface access, secondary containment and leak collection;
- d) a non-flexible containment pipe section, comprisng a plurality of straight, non-flexible pipe lengths, joined together by coupling means having an inside diameter of sufficient size, and a directional bend radius of sufficient length to permit a flexible supply pipe section to be inserted from one end to the other, said non-flexible containment piping sections being interconnected to said chambers through openings in the side wall of the chambers;
- e) a flexible supply pipe section having couplings installed on each end as a means of interconnecting one plumbing assembly to the next through the non-flexible containment pipe section;
- f) a sealing device, providing a means of mechanically sealing all pipe entries and exit openings located in the side walls of the chambers, to the annular wall of the non-flexible containment pipe section, whereby the joint is liquid tight and secure.
3 more elements
A secondarily contained underground piping system which connects the dispensing pump of an underground storage tank to an above ground terminating dispensing unit comprising:
- a) an originating chamber installed around the dispensing pump located at the beginning of a pipe line;
- b) a junction chamber installed under an above ground dispensing unit located within the piping line;
- c) a terminating chamber installed under an above ground dispensing unit located at the end of the piping line;
- d) a non-flexible containment piping section, comprising a plurality of straight, non-flexible pipe lengths, joined together by coupling means having an inside diameter of sufficient size, and a directional bend radius of sufficient length to permit a flexible supply pipe section to be inserted from one end to the other, said sections being interconnected to said chambers through openings in the side wall of the chambers;
- e) a flexible supply pipe section having couplings installed on each end as a means of interconnecting a plumbing assembly to the next through the non-flexible containment pipe section;
- and
- f) a sealing device, providing a means of mechanically sealing all pipe entries and exit openings located in the side walls of the chambers, to the annular wall of the non-flexible containment pipe, whereby the joint is liquid tight and secure.
4 more elements
A secondarily contained underground piping system which connects the dispensing pump of an underground storage tank to an above ground terminating dispensing unit comprising:
- a) an originating chamber installed around the dispensing pump located at the beginning of a pipe line, providing a means of surface access, secondary containment and leak collection;
- b) a junction chamber installed under an above ground dispensing unit located within the piping line providing a means of surface access, secondary containment and leak collection;
- c) a terminating chember installed under an above ground dispensing unit located at the end of the piping line, providing a means of surface access, secondary containment and leak collection;
- d) a non-flexible containment piping section, comprising a plurality of straight, non-flexible pipe lengths, joined together by coupling means having an inside diameter of sufficient size, and a directional bend radius of sufficient length to permit a flexible supply pipe section to be inserted from one end to the other, said sections being interconnected to said chambers through openings in the side wall of the chambers;
- e) a flexible supply pipe section having couplings installed on each end as a means of interconnecting a plumbing assembly to the next through the non-flexible containment pipe section;
- and
- f) a sealing device, providing a means of mechanically sealing all pipe entries and exit openings located in the side walls of the chambers, to the annular wall of the non-flexible containment pipe, whereby the joint is liquid tight and secure.
4 more elements
Dependencies are inferred from the claim text.