Septic tank drainage tile

Claim 2

A flexible corrugated tube having alternating substantially flat annular peak portions and substantially flat annular valley portiOns, walls interconnecting the peak and valley portions, at least one recess in one of the peak portions having a bottom contiguous with the valley portions opposite that peak portion, peak end walls at the recess closing the peak portion in which the recess is located, and an opening in the recess for providing communication between the interior and exterior of the tube.

Claim 3

A flexible corrugated tube having alternating substantially flat annular peak portions and substantially flat annular valley portiOns, walls interconnecting the peak and valley portions, at least one recess in one of the peak portions having a bottom contiguous with the valley portions opposite that peak portion, peak end walls at the recess closing the peak portion in which the recess is located, and an opening in the recess for providing communication between the interior and exterior of the tube.

Claim 4

A flexible corrugated tube having alternating substantially flat annular peak portions and substantially flat annular valley portiOns, walls interconnecting the peak and valley portions, at least one recess in one of the peak portions having a bottom contiguous with the valley portions opposite that peak portion, peak end walls at the recess closing the peak portion in which the recess is located, and an opening in the recess for providing communication between the interior and exterior of the tube.

Claim 5

A flexible corrugated tube as in claim 1 wherein the opening is circular.

Claim 6

A flexible corrugated tube as in claim 2 wherein the opening extends into the valley portions opposite the peak portion having the recess.

Claim 7

A flexible corrugated tube as in claim 1 wherein one annular peak portion of each group of a predetermined number of adjacent peak portions has a pair of spaced apart recesses.

Claim 8

A flexible corrugated tube as in claim 4 wherein the recesses of each pair are spaced apart 120*.

Claim 9

A flexible corrugated tube as in claim 5 wherein each opening is circular.

Claim 10

A flexible corrugated tube as in claim 6 wherein each opening extends into the valley portions opposite the peak portion having the recesses.

Claim 11

An effluent exfiltration and disposal tubing for use in connection with a septic tank leach bed to receive and disperse a solids-containing liquid effluent comprising: an elongated tube of polymeric material; said tube having corrugations upon the inner and outer surfaces thereof with roots and crests to enhance resistance to compressive forces while permitting flexing and bending whereby the inner corrugations serve as successive settling beds for the solids-containing liquid thereby to separate and deposit in the corrugations at least a portion of the solids contained in the liquid; periodic flats along the length of the tubing disposed generally at the minor diameter of the corrugations having a width substantially greater than the width of the other roots; spaced discharge openings in the periodic flats, for passage of the solids-containing liquid from the tube into a filter bed of aggregate having a particle size greater than the size of the openings whereby any remaining solids may be carried from the proximity of the openings into the interstices of the aggregate without clogging said openings; said openings having an axial dimension greater than the width of the other roots.

Claim 12

An effluent exfiltration and disposal tubing for use in connection with a septic tank leach bed to receive and disperse a solids-containing liquid effluent comprising: an elongated tube of polymeric material; said tube having corrugations upon the inner and outer surfaces thereof with roots and crests to enhance resistance to compressive forces while permitting flexing and bending whereby the inner corrugations serve as successive settling beds for the solids-containing liquid thereby to separate and deposit in the corrugations at least a portion of the solids contained in the liquid; periodic flats along the length of the tubing disposed generally at the minor diameter of the corrugations having a width substantially greater than the width of the other roots; spaced discharge openings in the periodic flats, for passage of the solids-containing liquid from the tube into a filter bed of aggregate having a particle size greater than the size of the openings whereby any remaining solids may be carried from the proximity of the openings into the interstices of the aggregate without clogging said openings; said openings having an axial dimension greater than the width of the other roots.

Claim 13

The drainage tile of claim 1 wherein the periodic flats pass completely around the circumference of the tube.

Claim 14

The drainage tile of claim 9 wherein the annularly spaced openings are equally spaced around the circumference of the tube in the periodic flats which have a width equal to approximately two roots and a crest.

Claim 15

The drainage tile of claim 10 wherein the annularly spaced openings are circular and are spaced at 120* apart.

Claim 16

A drainage tile or collection and dispersement of liquids and solid materials suspended therein comprising: an elongated tube of polymeric material; said tube having corrugations upon the inner and outer surfaces thereof with roots and crests to enhance resistance to compressive forces while permitting flexing and bending; periodic flats along the length of the tile disposed generally at the minor diameter of the corrugations having a width substantially greater than the width of the other roots; each of said periodic flats extending around only a fraction of the circumference of the tubing; at least one opening in each of the periodic flats, each annularly spaced opening having an axial dimension greater than the width of the other roots in order to allow liquid and solid matter to exit from the tube without clogging the openings and to permit the liquid and solid matter to be dispersed in the surrounding soil.

Claim 17

A drainage tile or collection and dispersement of liquids and solid materials suspended therein comprising: an elongated tube of polymeric material; said tube having corrugations upon the inner and outer surfaces thereof with roots and crests to enhance resistance to compressive forces while permitting flexing and bending; periodic flats along the length of the tile disposed generally at the minor diameter of the corrugations having a width substantially greater than the width of the other roots; each of said periodic flats extending around only a fraction of the circumference of the tubing; at least one opening in each of the periodic flats, each annularly spaced opening having an axial dimension greater than the width of the other roots in order to allow liquid and solid matter to exit from the tube without clogging the openings and to permit the liquid and solid matter to be dispersed in the surrounding soil.

Claim 18

The drainage tile of claim 12 wherein each periodic flat extends around the circumference of the tubing no greater than approximately one-half of the total circumference.

Claim 19

The drainage tile of claim 12 wherein the flat extends around the circumference of tHe tubing no greater than approximately one-half of the total circumference and has a plurality of openings therein.

Claim 20

The drainage tile of claim 12 wherein a plurality of flats each extend less than one-third of the circumference.

Claim 21

The drainage tile of claim 12 wherein the flats are intermittent among segments of a corrugation with circular openings in each flat.