Pressure-compensated self-flushing dripper

• US 5,340,027 A
• Filed: 06/21/1993
• Issued: 08/23/1994
• Est. Priority Date: 06/26/1992
• Status: Expired due to Fees

• Current Assignee: Michael Yu
• Original Assignee: Michael Yu
• Inventors: Yu, Michael
• Primary Examiner(s): Merritt, Karen B.
• Application Number:
  US08/081,782
• Time in Patent Office: 428 Days
• Field of Search: 239/542, 239/547, 239/104, 239/106, 239/114, 239/123, 239/533.1, 239/533.13, 239/464, 239/468, 239/276, 248/61, 137/513.5, 137/519.5, 137/460
• US Class Current: 239/106
• CPC Class Codes: A01G 25/023 Dispensing fittings for drip irrigation, e.g. drippers
• CPC Class Codes: B05B 1/3006 the controlling element being actuated by the pressure of the fluid to be sprayed B05B11/0062 takes precedence
• CPC Class Codes: B05B 1/302 with a ball-shaped valve member ball valves in general F16K1/14
• CPC Class Codes: B05B 15/52 for removal of clogging particles
• CPC Class Codes: B05B 3/0404 the motor comprising a movable ball
• CPC Class Codes: Y10T 137/7848 Permits flow at valve interface
• CPC Class Codes: Y10T 137/7873 Ball valves

Abstract

The dripper and mini-spray include an inlet and an outlet coupled to a housing which defines a substantially spherical, ellipsoidal, or cylindrical chamber. The chamber houses a ball which can roll about the chamber freely, but which is too large to exit through either the inlet or outlet. A whirlpool is caused by water or other liquids entering the chamber through the inlet due to the particular orientation and position of the inlet and the shape of the chamber. The whirlpool flushes debris from the chamber and pushes the ball around the chamber for a predetermined period of time. The ball then rests against the outlet to substantially obstruct the passageway out in a pressure-compensated manner.

Claims

1. An irrigation dripper, comprising:

an inlet for insertion substantially horizontally into an irrigation line and defining a passageway having a centerline lying substantially horizontally and at a right angle from said irrigation line;

a housing defining a generally cylindrical chamber having a center axis, said inlet passageway leading into said chamber and being substantially offset from and below said center axis;

an outlet defining a passageway leading from said chamber, said outlet passageway having a centerline lying substantially horizontally and being substantially parallel with said inlet passageway centerline, said outlet passageway lying in a same plane as said inlet passageway, and being substantially offset from and above said center axis of said chamber; and

a ball being free to roll about said chamber and adapted for substantially obstructing said outlet passageway after a whirlpool is created within said chamber for a predetermined time.

2. The irrigation dripper, as set forth in claim 1, further comprising a cradle defined at a junction between said chamber and said outlet passageway adapted for creating at least one opening between said ball and said cradle in a pressure-compensated manner.

3. The irrigation dripper, as set forth in claim 1, further comprising a lever arm coupled to said housing and extending outward at an angle to said inlet passageway, said lever arm lying substantially in the same plane as said inlet passageway.

4. The irrigation dripper, as set forth in claim 1, wherein said chamber further comprises an angled reflector pad disposed opposite of said inlet passageway.

5. The irrigation dripper, as set forth in claim 1, wherein said inlet further comprises an annular barb.

6. The irrigation dripper, as set forth in claim 5, including means for holding said annular barb tightly against an opening in said irrigation line without complete entry thereof.

7. An irrigation sprayer, comprising:

an inlet for insertion substantially horizontally into an irrigation line and defining a passageway having a centerline lying substantially horizontally and at a right angle from said irrigation line;

a housing defining a generally spherical chamber having a center point, said inlet passageway leading into said chamber and being substantially offset from and below said center point;

an outlet defined in said housing, said outlet being disposed above and generally at a right angle with respect to said inlet passageway, said outlet lying generally in a same plane as said inlet passageway; and

a ball being free to roll about said chamber and adapted for substantially obstructing said outlet after a whirlpool is created within said chamber for a predetermined time.

8. The irrigation sprayer, as set forth in claim 7, further comprising a lever arm extending downward substantially at a right angle to said inlet passageway.

9. The irrigation sprayer, as set forth in claim 8, further comprising a fitting for receiving said downward extending lever arm, said fitting being adapted for capping one end of a pipe inserted into the ground.

10. The irrigation sprayer, as set forth in claim 7, wherein said chamber further comprises an angled reflector pad disposed opposite of said inlet passageway.

11. The irrigation sprayer, as set forth in claim 7, wherein said inlet further comprises an annular barb adapted for secure insertion into an irrigation tubing.

12. The irrigation sprayer, as set forth in claim 7, further comprising a cradle defined at a junction between said chamber and said outlet adapted for creating at least one opening between said ball and said cradle in a pressure-compensated manner.

13. The irrigation sprayer, as set forth in claim 12, wherein said cradle is adapted for creating a spray pattern.

14. The irrigation dripper, as set forth in claim 7, wherein said chamber is spherical having two flattened sides equidistant form and parallel with said inlet centerline.

15. The irrigation sprayer, as set forth in claim 7, further comprising a removable sprayer tip.

16. A pressure compensated irrigation water dispenser, comprising:

an inlet having a passageway for insertion into an opening in a water irrigation line;

a generally spherical housing coupled to said inlet passageway, said inlet passageway being generally offset from a center axis of said cylindrical housing;

an outlet coupled to said housing and being generally disposed opposite of said inlet passageway;

a cradle defined at a junction between said housing and said outlet, said cradle adapted to function as a reservoir for relieving high water pressure in said housing;

said cradle further defining at least one two-stage slot by defining a small opening below a larger opening; and

a free-rolling ball disposed inside said housing, said ball being swirled about inside said housing by water entering through said inlet, and being adapted for resting against said cradle after a predetermined time period, said at least one two-stage slot permitting water to escape said housing between said ball and said cradle.

17. The pressure compensated irrigation water dispenser, as set forth in claim 16, further comprising a lever arm extending downward for securing against said water irrigation line.

18. The pressure compensated irrigation water dispenser, as set forth in claim 16, further comprising a hose hanger for securing said irrigation water dispenser against said water irrigation line.

19. The pressure compensated irrigation water dispenser, as set forth in claim 16, wherein said housing defines an angled reflector pad therein and disposed opposite of said inlet passageway.

20. The pressure compensated irrigation water dispenser, as set forth in claim 16, wherein said cradle and said at least one two-stage slot are adapted for producing a water spray emitting from said outlet.

21. The irrigation sprayer, as set forth in claim 16, wherein said generally spherical housing is a sphere having two flattened sides equidistant from and parallel with a centerline of said inlet.