Fluid extractors

Claim 2

In combination, an outer tube comprising a tubular wall with port means in the tubular wall, a sealing member of flexible sheet material positioned in the tube and having openings offset from the port means and pressed against the inner tubular wall of the tube, and a presser insertable through the pOrt means to press the sealing member away from the port means to open the openings and form passages from the openings to the port means.

Claim 3

The combination of claim 1 wherein the sealing member is a hose positioned in the outer tube.

Claim 4

The combination of claim 2 wherein the openings are holes in the hose.

Claim 5

The combination of claim 2 wherein the openings are circumferential slits in the hose.

Claim 6

In combination, a hose having lateral openings therein at spaced points therealong, and closing means having abutment surfaces opposite the openings and against which the portions of the hose surrounding the openings are pressed into sealing engagement by fluid under pressure in the hose, the portions of the hose between the openings being adapted when pressed radially inwardly to flex the portions of the hose surrounding the openings away from the abutment surfaces to open the openings.

Claim 7

In combination, a hose having lateral openings therein at spaced points therealong, and closing means having abutment surfaces opposite the openings and against which the portions of the hose surrounding the openings are pressed into sealing engagement by fluid under pressure in the hose, the portions of the hose between the openings being adapted when pressed radially inwardly to flex the portions of the hose surrounding the openings away from the abutment surfaces to open the openings.

Claim 8

The combination of claim 5 wherein the openings are holes along one side of the hose.

Claim 9

The combination of claim 5 wherein the openings are arcuate slits positioned along one side of the hose.

Claim 10

The combination of claim 5 wherein the closing means comprises a tube fitting closely around the hose and having a discharge port offset from the openings in the hose.

Claim 11

The combination of claim 5 wherein the closing means comprises a tube having ports staggered relative to the openings and fitting closely on the hose.

Claim 12

The combination of claim 9 wherein the openings are holes positioned at least one side of the hose and the ports are spaced circumferentially from the openings.

Claim 13

The combination of claim 9 wherein the openings are arcuate slits in the hose positioned along one side of the hose and the ports are spaced longitudinally of the openings.

Claim 14

The combination of claim 8 wherein the tube has a slot extending along the top thereof and including a chamber, seals at the ends of the chamber engaging the tube, and a presser carried by the chamber and extending through the slot to press the adjacent portion of the hose radially inwardly.

Claim 15

The combination of claim 12 wherein the hose includes a flexible rib extending therealong and substantially filling the slot when not pressed by the presser.

Claim 16

In combination, an elongated outer tube having lateral port means, and an inner hose of flexible material in the outer tube and having lateral openings offset from the port means, the portions of the inner hose surrounding the openings being adapted to be pressed into sealing engagement with adjacent portions of the outer tube by pressure of fluid in the hose, the portions of the hose at the port means in the tube being adapted to be pushed inwardly to flex the portions of the hose surrounding the port means away from the tube to permit fluid to flow out of the hose and to and through the port means in the tube.

Claim 17

In combination, an elongated outer tube having lateral port means, and an inner hose of flexible material in the outer tube and having lateral openings offset from the port means, the portions of the inner hose surrounding the openings being adapted to be pressed into sealing engagement with adjacent portions of the outer tube by pressure of fluid in the hose, the portions of the hose at the port means in the tube being adapted to be pushed inwardly to flex the portions of the hose surrounding the port means away from the tube to permit fluid to flow out of the hose and to and through the port means in the tube.

Claim 18

In an irrigation extraction device, an elongated flexible hose having openings spaced therealong and supplied with water under pressure, support means including abutment surface means mounting the hose in a position in which the portions thereof surrounding the openings engage the abutment surface means to prevent flow of water through the openings, a chamber movable along the hose and the support means, and actuator means movable with the chamber for distorting a portion of the hose to move a portion of the hose adjacent one of the openings away from the abutment surface means to permit flow of water from the pipe to the chamber.

Claim 19

In an irrigation extraction device, an elongated flexible hose having openings spaced therealong and supplied with water under pressure, support means including abutment surface means mounting the hose in a position in which the portions thereof surrounding the openings engage the abutment surface means to prevent flow of water through the openings, a chamber movable along the hose and the support means, and actuator means movable with the chamber for distorting a portion of the hose to move a portion of the hose adjacent one of the openings away from the abutment surface means to permit flow of water from the pipe to the chamber.

Claim 20

The irrigation extraction device of claim 15 wherein the support means comprises a tube fitting closely on the hose and having openings offset from the openings in the hose to permit insertion of the actuator means into the tube to move the hose.

Claim 21

The irrigation extraction device of claim 15 wherein the openings are slits.

Claim 22

The irrigation extraction device of claim 17 wherein the slits are along portions of the circumference of the tuBe.

Claim 23

The irrigation extraction device of claim 16 wherein the openings are wide and the portions of the hose adjacent the openings normally sealingly engage the inner surface of the tube.

Claim 24

The irrigation extraction device of claim 19 wherein the openings in the tube are circumferentially offset from the openings in the hose.

Claim 25

The irrigation device of claim 15 wherein the openings are located in a first portion of the hose which has a predetermined stiffness the surrounding portions of the hose at the sides of the first portion of the hose being substantially less stiff than said predetermined stiffness.

Claim 26

The irrigation device of claim 22 wherein the surrounding portions of the hose have a durometer hardness of between 20 and 40 and the first portion of the hose has a durometer hardness of between 70 and 90.

Claim 27

The irrigation device of claim 21 wherein the first portion of the hose includes a stiffening element.

Claim 28

The combination of claim 1 wherein the outer tube and the sealing member are cylindrical and concentric.