Water discharge device for use with irrigation systems

Claim 2

A fluid discharge device for use with irrigation systems comprising a T-type body having a first tubular portion which defines a flow-through channel with oppositely directed connecting end portions adapted to be inserted into cooperating end portions of respective hoses, and a second tubular portion connected substantially perpendicular to said first tubular portion and provided with a free end portion, said second tubular portion being provided with female threads on the inside surface thereof and male threads on the outside surface of said free end portion, a screw element provided with male threads on the outside surface thereof, said screw element male threads engaging said female threads of said second tubular portion and defining therebetween a continuous flow passage therethrough, an aperture disposed in said first tubular portion, said aperture providing communication between said continuous flow passage and said flow-through channel, and a locking cap element disposed on the free end portion of said second tubular element in a manner to substantially close said free end and retain said screw element against rotation and axial movement, said cap element being provided with female threads which engage the male threads on the outside of said second tubular free end portion and a plurality of openings disposed in said cap element, said openings communicating with said continuous flow passage.

Claim 3

The fluid discharge device of claim 1, wherein said aperture communicates with one end of said continuous flow passage and said plurality of openings communicates with the other end of said continuous flow passage.

Claim 4

The fluid discharge device of claim 2, wherein said cap element contains an end wall and the openings provided in the end wall of said cap element are connected with small tubes which further distribute fluid to a wide distribution zone.

Claim 5

The fluid discharge device of claim 3, wherein said small tubes are provided with nozzle means which further divide the fluid flow into a plurality of flows.

Claim 6

The fluid discharge device of claim 1, wherein the height of said female threads which define said continuous flow passage is higher than that of the cooperating male threads.

Claim 7

The fluid discharge device of claim 1, wherein the height of said male threads which define said continuous flow passage is higher than that of the cooperating female threads.

Claim 8

The fluid discharge device of claim 1, wherein at least one of said male and female threads which cooperate to define said continuous flow passage are square threads.

Claim 9

A fluid discharge device for use with irrigation systems comprising a T-type body having a first tubular portion which defines a flow-through channel with oppositely directed connecting end portions adapted to be inserted into cooperating end portions of respective hoses and a second tubular portion connected substantially perpendicular to said first tubular portion and provided with a free end portion, said second tubular portion being provided with female threads on the inside surface thereof and male threads on the outside surface thereof, a screw element provided with male threads on the outside surface thereof, said screw element male threads engaging said female threads of said second tubular portion and defining therebetween a first continuous flow passage therethrough, a cover means covering said second tubular portion, said inside surface of the cover means and the male threads on the outside surface of the second tubular portion defining therebetween a second continuous flow passage therethrough, said first continuous flow passage communicating with said second continuous flow passage at one end of the second tubular portion and a fluid discharge port communicating with said second continuous flow passage at the other end of the second tubular portion, and an aperture disposed in said first tubular portion, said aperture providing communication between said first continuous flow passage and said flow-through channel.

Claim 10

A fluid discharge device for use with irrigation systems comprising a T-type body having a first tubular portion which defines a flow-through channel with oppositely directed connecting end portions adapted to be inserted into cooperating end portions of respective hoses and a second tubular portion connected substantially perpendicular to said first tubular portion and provided with a free end portion, said second tubular portion being provided with female threads on the inside surface thereof and male threads on the outside surface thereof, a screw element provided with male threads on the outside surface thereof, said screw element male threads engaging said female threads of said second tubular portion and defining therebetween a first continuous flow passage therethrough, a cover means covering said second tubular portion, said inside surface of the cover means and the male threads on the outside surface of the second tubular portion defining therebetween a second continuous flow passage therethrough, said first continuous flow passage communicating with said second continuous flow passage at one end of the second tubular portion and a fluid discharge port communicating with said second continuous flow passage at the other end of the second tubular portion, and an aperture disposed in said first tubular portion, said aperture providing communication between said first continuous flow passage and said flow-through channel.

Claim 11

The fluid discharge device of claim 8, wherein the height of said female threads which define said first continuous flow passage is higher than that of the cooperating male threads.

Claim 12

The fluid discharge device of claim 8, wherein the height of said male threads which define said first continuous flow passage is higher than that of the cooperating female threads.

Claim 13

The fluid discharge device of claim 8, wherein at least one of said male and female threads which cooperate to define said first continuous flow passage are square threads.

Claim 14

A fluid discharge device for use with irrigation systems comprising a tubular element provided with internal female square threads which extend a substantial distance from one end portion of the inside surface thereof and internal female triangular threads which extend from the other end portion of the inside surface thereof, a tubular screw element coaxially disposed within said tubular element, said screw element defining a flow-through channel therethrough and provided with external male square threads which extend along a substantial portion of the outside surface thereof and external male triangular threads disposed at the outside surface thereof, said male and female square threads being in screw engagement with each other and defining a continuous flow passage therebetween and said male triangular threads engaging said female triangular threads in a manner to retain said screw elements against rotation and axial movement, oppositely directed connecting end portions of said tubular screw element adapted to be inserted into cooperating end portions of respective hoses, said oppositely directed connecting end portions being integral with respective ends of the tubular screw element in forming said flow-through channel, annular groove means disposed between said square and triangular threads in said tubular element and screw element, said annular groove means including at least one opening through said screw element for providing communication between said flow-through channel and said continuous flow passage at one end of said screw element and a fluid discharge port communicating with said continuous flow passage at the other end of said screw element.

Claim 15

A fluid discharge device for use with irrigation systems comprising a tubular element provided with internal female square threads which extend a substantial distance from one end portion of the inside surface thereof and internal female triangular threads which extend from the other end portion of the inside surface thereof, a tubular screw element coaxially disposed within said tubular element, said screw element defining a flow-through channel therethrough and provided with external male square threads which extend along a substantial portion of the outside surface thereof and external male triangular threads disposed at the outside surface thereof, said male and female square threads being in screw engagement with each other and defining a continuous flow passage therebetween and said male triangular threads engaging said female triangular threads in a manner to retain said screw elements against rotation and axial movement, oppositely directed connecting end portions of said tubular screw element adapted to be inserted into cooperating end portions of respective hoses, said oppositely directed connecting end portions being integral with respective ends of the tubular screw element in forming said flow-through channel, annular groove means disposed between said square and triangular threads in said tubular element and screw element, said annular groove means including at least one opening through said screw element for providing communication between said flow-through channel and said continuous flow passage at one end of said screw element and a fluid discharge port communicating with said continuous flow passage at the other end of said screw element.

Claim 16

The fluid discharge device of claim 12, wherein the height of said female threads which define said continuous flow passage is higher than that of the cooperating male threads.

Claim 17

The fluid discharge device of claim 12, wherein the height of said male threads which define said continuous flow passage is higher than that of the cooperating female threads.

Claim 18

The fluid discharge device of claim 12, wherein at least one of said male and female threads which cooperate to define said continuous flow passage are square threads.