Dynamic protective shield for pop-up sprinklers
AssigneeAnthony Manufacturing Corp.
InventorsKenneth L. Lawson, Enric C. Mendoza, Edward M. Troup, deceased
Life of this patent
Estimating the term…
Abstract
A pop-up guard or shield for use with a pop-up sprinkler mounted in a casing buried in the ground to protect against the entry of dirt, sand, weeds, and the like into the casing during sprinkler operation. The guard includes a spring biased sleeve which pops up together with the sprinkler during sprinkler extension to the operative position, and is retracted into the casing during movement of the sprinkler to the inoperative position.
Claims13
In a pop-up irrigation sprinkler of the type including a casing adapted to be buried in the ground having an open upper end and a generally closed bottom, a sprinkler coupled to a stem and mounted to said casing for relative movement between an extended, operative position with the sprinkler elevated above the casing and a retracted, inoperative position with the sprinkler housed within the casing below the open end, and a cover overlying the sprinkler and adapted to close the open end of the casing when the sprinkler is in the retracted, inoperative position, the improvement comprising:
- pop-up shield means coupled to said casing and movable with said sprinkler between a fully extended and a retracted position during a portion of said sprinkler extension and retraction, said cover engaging said shield means during movement of said shield means between said fully extended and retracted positions of said shield means thereby to effectively encase said sprinkler during said portion of said sprinkler extension and retraction.
A pop-up irrigation sprinkler comprising:
- a casing having an open upper end and a substantially closed bottom;
- a pop-up sprinkler assembly mounted to said casing for movement between an extended, operative position and a retracted, inoperative position, said assembly including a sprinkler head attached to the upper end of a tubular stem, said stem being movably mounted within said casing for extending said head above said upper end of said casing to said operative position and for retracting said head into said casing to said inoperative position;
- means biasing said sprinkler assembly toward said retracted position;
- a cover coupled to said sprinkler assembly and overlying said head;
- and
- a pop-up shield slidably mounted to said casing and movable between a fully extended position and a retracted position, said shield surrounding said head when in its retracted position and being movable with said pop-up sprinkler assembly during a portion of said extension and retraction of said pop-up sprinkler assembly, said shield having an upper end engageable with said cover during movement of said shield between said fully extended and retracted positions of said shield thereby to effectively encase said pop-up sprinkler assembly during said portion of said extension and retraction of said pop-up sprinkler assembly.
Dependencies are inferred from the claim text.