Arc adjustable rotary sprinkler having full-circle operation and automatic matched precipitation
First Claim
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1. A rotary sprinkler comprising:
- a housing with an inlet for receiving fluid for irrigation, the housing having a longitudinal axis;
a nozzle defining an outlet with a variable shape for projecting irrigation fluid from the sprinkler, the nozzle mounted for rotation relative to the housing;
a drive mechanism for rotating the nozzle in a reversible arc of rotation;
an arc adjustment mechanism configured upon adjustment thereof to increase or decrease the arc of rotation of the nozzle; and
a split gate valve at the nozzle outlet having two gate vanes disposed on opposing sides of the nozzle outlet, the gate vanes operably coupled to the arc adjustment mechanism such that adjustment thereof is operable to shift the two gate vanes toward or away from each other at the nozzle outlet to vary the shape of the nozzle outlet to adjust a fluid flow rate through the outlet proportional to the arc of rotation, wherein the split gate valve includes a linking portion connecting ends of the two gate valve vanes, and wherein the linking portion is a resilient strip providing a biasing force on each of the two gate vanes.
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Accused Products
Abstract
A rotary sprinkler including a rotatable nozzle turret with automatic matched precipitation to an arc of rotation, a nozzle purge feature, and/or a flow shut off valve coupled to a variable flow nozzle outlet.
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Citations
4 Claims
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1. A rotary sprinkler comprising:
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a housing with an inlet for receiving fluid for irrigation, the housing having a longitudinal axis; a nozzle defining an outlet with a variable shape for projecting irrigation fluid from the sprinkler, the nozzle mounted for rotation relative to the housing; a drive mechanism for rotating the nozzle in a reversible arc of rotation; an arc adjustment mechanism configured upon adjustment thereof to increase or decrease the arc of rotation of the nozzle; and a split gate valve at the nozzle outlet having two gate vanes disposed on opposing sides of the nozzle outlet, the gate vanes operably coupled to the arc adjustment mechanism such that adjustment thereof is operable to shift the two gate vanes toward or away from each other at the nozzle outlet to vary the shape of the nozzle outlet to adjust a fluid flow rate through the outlet proportional to the arc of rotation, wherein the split gate valve includes a linking portion connecting ends of the two gate valve vanes, and wherein the linking portion is a resilient strip providing a biasing force on each of the two gate vanes. - View Dependent Claims (3)
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2. A rotary sprinkler comprising:
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a housing with an inlet for receiving fluid for irrigation, the housing having a longitudinal axis; a nozzle defining an outlet with a variable shape for projecting irrigation fluid from the sprinkler, the nozzle mounted for rotation relative to the housing; a drive mechanism for rotating the nozzle in a reversible arc of rotation; an arc adjustment mechanism configured upon adjustment thereof to increase or decrease the arc of rotation of the nozzle; and a split gate valve at the nozzle outlet having two gate vanes disposed on opposing sides of the nozzle outlet, the gate vanes operably coupled to the arc adjustment mechanism such that adjustment thereof is operable to shift the two gate vanes toward or away from each other at the nozzle outlet to vary the shape of the nozzle outlet to adjust a fluid flow rate through the outlet proportional to the arc of rotation, further comprising a linkage between the arc adjustment mechanism and the two gate valve vanes, the linkage coupled on one portion thereof to the arc adjustment mechanism and coupled on other portions thereof to the gate valve vanes such that actuation of the arc adjustment mechanism to adjust the arc of rotation simultaneously shifts the gate valve vanes toward or away from each other to automatically vary the shape of the nozzle outlet incident to adjustment of the arc of rotation, wherein each gate valve vane of the split gate valve includes a valving portion in the outlet of the nozzle and a winged extension oriented transverse to the valving portion and extending away from the nozzle outlet, the winged extension coupled to the linkage. - View Dependent Claims (4)
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Specification