Riser cap and irrigation piping system using same
First Claim
1. An irrigation pipe system, comprising:
- a coupler having a body configured to be connected to a fluid transport pipe, the coupler comprising a riser adapter extending from the body in fluid communication with the coupler, the riser adapter comprises external threads, and the body and the riser adapter are integrally formed together;
a riser cap having a bore that is smooth and configured to receive a sprinkler riser at a top end thereof, the bore has a bottom end, the riser cap comprises an annular skirt coaxial with the bore, the annular skirt having an inner diameter larger than an inner diameter of the bore, and the annular skirt comprises internal threads configured to couple with the external threads of the riser adapter;
a seal; and
the riser cap is configured to be coupled to the riser adapter of the coupler by inserting the bottom end inside the riser adapter and threadably connecting the internal threads of the annular skirt to the external threads of the riser adapter and, when the riser cap is coupled to the riser adapter, the seal contacts only an axial surface of the riser adapter.
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Accused Products
Abstract
A polymeric riser cap member includes a central tubular section defining a generally cylindrical bore for receiving a sprinkler riser, the central tubular section having open top and bottom ends, and an annular skirt coaxial with the central tubular section and having an inner diameter larger than an inner diameter of the central tubular section. The annular skirt has an inner surface having internal threads threadably connectable with the externally threaded surface of a tubular riser adapter member of a tubular coupler. The bottom end of the central tubular section has an annular projection disposed opposite and spaced from a portion of the annular skirt. The riser cap member includes an annular recess adapted to receive a seal located in a wall extending laterally between the annular skirt and the annular projection.
51 Citations
19 Claims
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1. An irrigation pipe system, comprising:
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a coupler having a body configured to be connected to a fluid transport pipe, the coupler comprising a riser adapter extending from the body in fluid communication with the coupler, the riser adapter comprises external threads, and the body and the riser adapter are integrally formed together; a riser cap having a bore that is smooth and configured to receive a sprinkler riser at a top end thereof, the bore has a bottom end, the riser cap comprises an annular skirt coaxial with the bore, the annular skirt having an inner diameter larger than an inner diameter of the bore, and the annular skirt comprises internal threads configured to couple with the external threads of the riser adapter; a seal; and the riser cap is configured to be coupled to the riser adapter of the coupler by inserting the bottom end inside the riser adapter and threadably connecting the internal threads of the annular skirt to the external threads of the riser adapter and, when the riser cap is coupled to the riser adapter, the seal contacts only an axial surface of the riser adapter. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A combined riser cap and sprinkler riser for connection in a piping system to a tubular coupler having at least one open end configured to be connected to a fluid transport pipe, the tubular coupler having a tubular riser adapter in fluid communication with a central region thereof, the tubular riser adapter having an externally threaded surface, the combined riser cap and sprinkler riser comprising:
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a riser cap having a central tubular section defining a generally cylindrical bore, and an annular skirt coaxial with the central tubular section and having an inner diameter larger than an inner diameter of the central tubular section, the annular skirt having an inner surface having internal threads threadably connectable with the externally threaded surface of the tubular riser adapter; and a sprinkler riser having a first end configured to be disposed within the cylindrical bore of the riser cap, and the sprinkler riser is configured to be bonded to the riser cap. - View Dependent Claims (9, 10, 11, 12, 13)
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14. A riser cap for connecting a sprinkler riser in a piping system to a tubular coupler having at least one open end configured to be connected to a fluid transport pipe, the tubular coupler having a tubular riser adapter in fluid communication with a central region thereof, the tubular riser adapter having an externally threaded surface, the riser cap comprising:
a central tubular section defining a generally cylindrical bore for receiving a sprinkler riser, the central tubular section having open top and bottom ends, and an annular skirt coaxial with the central tubular section and having an inner diameter larger than an inner diameter of the central tubular section, the annular skirt having an inner surface having internal threads threadably connectable with the externally threaded surface of the tubular riser adapter, the bottom end of the central tubular section having an annular projection disposed opposite and spaced from a portion of the annular skirt, wherein the riser cap includes an annular recess adapted to receive a seal located in a wall extending laterally between the annular skirt and the annular projection. - View Dependent Claims (15, 16, 17, 18, 19)
Specification