US Patent No. 9,814,189

LOW FLOW EMITTER WITH EXIT PORT CLOSURE MECHANISM FOR SUBSURFACE IRRIGATION


Patent No. 9,814,189
Issue Date November 14, 2017
Title Low Flow Emitter With Exit Port Closure Mechanism For Subsurface Irrigation
Inventorship Michael L. Clark, San Marcos, CA (US)
Daniel E. Hunter, Vista, CA (US)
Assignee Hunter Industries, Inc., San Marcos, CA (US)

Claim of US Patent No. 9,814,189

1. A landscape irrigation fluid emitter comprising:
a chamber;
a lid defining at least one wall of the chamber; and
an entry port, the entry port having:
an inlet axis extending through the entry port;
a first wall extending transverse to the inlet axis and having a first hole positioned along the inlet axis;
a mating channel extending along the inlet axis and defined by an annular wall connected to the first wall, the mating channel
spaced from the first hole along the inlet axis; and

a gap defining the space between the mating channel and the first hole, the gap defining a boundary of a portion of the annular
wall along the inlet axis;

a first clamp tab integral with the lid;
a lock wall positioned at least partially within the gap, the lock wall connected to the first clamp tab and having a second
hole;

an exit port, the exit port having:
an exit axis extending through the exit port;
a second wall extending transverse to the exit axis and having a third hole positioned along the exit axis;
an exit mating channel extending along the exit axis and defined by an annular wall connected to the second wall, the exit
mating channel spaced from the third hole along the exit axis; and

a second gap defining the space between the exit mating channel and the third hole, the second gap defining a boundary of
a portion of the annular wall along the exit axis;

a second clamp tab integral with the lid; and
a second lock wall positioned at least partially within the second gap, the lock wall connected to the second clamp tab and
having a fourth hole;

wherein:
the lock wall is configured to transition between an aligned position and an offset position;
the second hole is aligned with the first hole along the inlet axis when the lock wall is in the aligned position;
at least a portion of the lock wall overlaps the first hole when the lock wall is in the offset position;
the lock wall is configured to pinch and deform a portion of flexible tubing when flexible tubing is inserted through the
first hole and the lock wall and the lock wall is in the offset position; and

the lock wall is biased to the offset position.