Sump liner

• US 20040094209A1
• Filed: 11/07/2003
• Published: 05/20/2004
• Est. Priority Date: 08/26/2002
• Status: Active Grant

• Current Assignee: Alden Harwood
• Original Assignee: Alden Harwood
• Inventors: Harwood, Alden
• Granted Patent: US 7,100,632 B2
• Time in Patent Office: Days
• US Class Current: 137/565.29
• CPC Class Codes: E02D 31/02 against ground humidity or ground water E02D31/06 takes precedence; arrangements other than according to E02D31/04; against hydraulic pressure of groundwater E02D31/10
• CPC Class Codes: F04D 13/16 with storage reservoirs
• CPC Class Codes: Y10T 137/6988 Floor installation
• CPC Class Codes: Y10T 137/8342 Liquid level responsive indicator, recorder or alarm
• CPC Class Codes: Y10T 137/86131 Plural
• CPC Class Codes: Y10T 137/86163 Parallel
• CPC Class Codes: Y10T 137/86212 Plural compartments formed by baffles

Abstract

A sump liner comprising a liner wall joined with a base member, the liner wall extending about the periphery of the base member, the liner wall comprising a primary reservoir portion and a secondary reservoir portion, with a weir extending from the base member and the inside surface of the liner wall. The weir divides the sump liner interior into a primary reservoir and a secondary reservoir, with a primary pump to remove water from the primary reservoir and a secondary pump to remove water from the secondary reservoir. The primary reservoir receives drainage water through an inlet pipe. The secondary reservoir receives drainage water that flows over the weir in the event the primary pump in the primary reservoir fails, in which case the secondary pump in the secondary reservoir pumps out the water. The weir may have an inverted V-shape. A sump liner and with a vented lid bolted to it to form an airtight seal. The vented lid comprising a body defining a vent opening, electric cable openings, and a drain pipe opening. A drain connects to the vented lid and a drain pipe extends from the drain and into the sump liner, the drain pipe having a submersed end for being submerged in water in the sump liner and for forming a seal with water in the sump liner so that gas from inside the sump liner cannot exit the sump liner through the drain.

Claims

1. A sump liner comprising:

a) a base member;

b) a liner wall comprising a proximal end and a distal end, the proximal end joined with the base member;

c) the liner wall joined with and extending about the periphery of the base member, the liner wall and the base member defining a sump liner interior therein;

d) the liner wall comprising an inside surface and an outside surface;

e) a weir, the weir positioned in the sump liner interior, the weir comprising an inverted V-shape and divides the sump liner interior into a primary reservoir and an adjacent secondary reservoir; and

f) wherein the liner wall further comprises a primary reservoir portion and an impermeable secondary reservoir portion, the primary reservoir portion of the liner wall defining a cutout for allowing groundwater to flow through and enter the primary reservoir, the weir for controlling the flow of water into the secondary reservoir.

2. A apparatus for protection against radon gas comprising:

a) a sump liner,

b) a vented lid comprising a body defining a vent opening, electric cable openings, and a drain pipe opening,

c) the sump liner bolted to the lid to form an airtight seal between the sump liner and the vented lid,

d) a drain connected to the vented lid and a drain pipe extending from the drain and into the sump liner, the drain pipe having a submersed end for being submerged in water in the sump liner and for forming a seal with water in the sump liner so that gas from inside the sump liner cannot exit the sump liner through the drain.