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US 11,154,875 B2Granted
Pulsating device with two preset pressure-responding normally closed valves
AssigneePulsating Irrigation Products, Inc.
InventorGideon Ruttenberg
Life of this patent
Estimating the term…
Abstract
A pulsating device with two preset pressure-responding normally-closed valves is disclosed. The first valve is used for accumulating fluid. The second valve is used for creating resistance so as to force the first valve to open widely. The second valve may be configured so it creates little to no resistance once opened. In some embodiments, the pulsating device converts a low controlled and/or continuous flow of fluid, such as water and/or air, to a high pulsating and/or intermittent flow. A pulsating device may operate, for example, one or more drip lines, pop ups, sprinklers, misters and/or other irrigation devices.
Claims20
A pulsating device comprising:
- a rigid insert;
- an elastic sleeve surrounding at least a portion of the rigid insert, wherein the elastic sleeve is configured to expand relative to the rigid insert;
- an expandable collection chamber for receiving fluid from a fluid inlet, wherein the expandable collection chamber is disposed between the elastic sleeve and the rigid insert, along at least a first portion of the length of the rigid insert;
- a burst chamber disposed between the elastic sleeve and the rigid insert, along at least a second portion of the length of the rigid insert which is downstream of the first portion of the length of the rigid insert;
- a first valve for controlling a first fluid communication between the expandable collection chamber and the burst chamber;
- and
- a second valve for controlling a second fluid communication between the burst chamber and a fluid outlet;
- wherein the first valve opens a first amount when a collection chamber pressure in the expandable collection chamber exceeds a first pressure value;
- wherein the second valve produces a resistance, forcing the first valve to open an additional amount greater than the first amount;
- wherein the second valve opens when a burst pressure at a location of the second valve exceeds a second pressure value;
- wherein the second valve comprises a port in the rigid insert covered by the elastic sleeve when the second valve is closed;
- and
- wherein an outside surface of the rigid insert comprises an indentation disposed thereon between the fluid inlet and the first valve, and wherein the expandable collection chamber has a first volume defined between the indentation and an inside surface of the elastic sleeve when the elastic sleeve is in an unstressed state.
10 more elements
A pulsating device comprising:
- a rigid insert;
- an elastic sleeve surrounding at least a portion of the rigid insert, wherein the elastic sleeve is configured to expand relative to the rigid insert;
- an expandable collection chamber for receiving fluid from a fluid inlet, wherein the expandable collection chamber is disposed between the elastic sleeve and the rigid insert, along at least a first portion of the length of the rigid insert;
- a burst chamber disposed between the elastic sleeve and the rigid insert, along at least a second portion of the length of the rigid insert which is downstream of the first portion of the length of the rigid insert;
- a first valve for controlling a first fluid communication between the expandable collection chamber and the burst chamber;
- and
- a second valve for controlling a second fluid communication between the burst chamber and a fluid outlet;
- wherein the first valve opens a first amount when a collection chamber pressure in the expandable collection chamber exceeds a first pressure value;
- wherein the second valve produces a resistance, forcing the first valve to open an additional amount greater than the first amount;
- wherein the second valve opens when a burst pressure at a location of the second valve exceeds a second pressure value;
- wherein the second valve comprises a port in the rigid insert;
- wherein an outside surface of the rigid insert comprises an indentation disposed thereon between the fluid inlet and the first valve, and wherein the expandable collection chamber has a first volume defined between the indentation and an inside surface of the elastic sleeve when the elastic sleeve is in an unstressed state;
- and
- wherein the expandable collection chamber has a second volume defined between the indentation and the inside surface of the elastic sleeve when the burst pressure at the location of the second valve exceeds the second pressure value, and wherein the second volume is greater than the first volume.
11 more elements
Dependencies are inferred from the claim text.