Sprinkler top with co-molded seal for riser and body
First Claim
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1. A top for a pop-up type irrigation sprinkler that utilizes a riser that pops up from a stationary sprinkler body, the top comprising:
- a cap which is threadedly attached to the sprinkler body; and
a co-molded seal positioned in a center of the cap with a riser opening in the center thereof, wherein the seal prevents water from leaking out of the sprinkler between the cap and the sprinkler body and between the seal and the riser, the co-molded seal including at least one hard plastic portion having an outer circumference and an inner circumference, wherein the outer circumference and the inner circumference are covered with an elastic material.
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Abstract
A top for a pop-up type irrigation sprinkler that utilizes a riser that pops up from a stationary sprinkler body in accordance with an embodiment to the present invention includes a cap which is threadedly attached to the sprinkler body; a co-molded seal positioned in a center of the cap with a riser opening in the center thereof, wherein the seal prevents water from leaking out of the sprinkler between the cap and the sprinkler body and between the seal and the riser.
18 Citations
16 Claims
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1. A top for a pop-up type irrigation sprinkler that utilizes a riser that pops up from a stationary sprinkler body, the top comprising:
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a cap which is threadedly attached to the sprinkler body; and a co-molded seal positioned in a center of the cap with a riser opening in the center thereof, wherein the seal prevents water from leaking out of the sprinkler between the cap and the sprinkler body and between the seal and the riser, the co-molded seal including at least one hard plastic portion having an outer circumference and an inner circumference, wherein the outer circumference and the inner circumference are covered with an elastic material. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A co-molded seal for use in a pop-up type irrigation sprinkler that utilizes a riser that pops up and down in a cap connected to a stationary sprinkler body, the co-molded seal comprising:
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at least one hard plastic portion formed in a first step of a two shot molding process; and an elastic portion made of an elastic material that is formed to surround the hard plastic portion in a second step of the two step molding process such that an outer circumference and an inner circumference of the hard plastic portion is covered with the elastic material, wherein the elastic portion provides a seal to prevent water from leaking out of the sprinkler between the cap and the sprinkler body and between the seal and the riser. - View Dependent Claims (11, 12, 13, 14, 15, 16)
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Specification