Automatic reversible arc sprinkler

An automatic reversible arc assembly for a sprinkler comprising:

• a pair of primary stop members circumferentially spaced from each other by a first amount;
• a pair of secondary stop members circumferentially spaced from each other by a second amount;
• and
• a timer module cooperable with the primary and secondary stop members, the timer module being configured to hold the primary and secondary stop members in a first position in which the primary stop members are active and the secondary stop members are inactive for a selectable period of time, after which the timer module is configured to effect displacement of the primary and secondary stop members to a second position in which the primary stop members are inactive and the secondary stop members are active,
• wherein the primary stop members and the secondary stop members are coupled together and define a pivot assembly pivotable between the first position and the second position, and wherein the pivot assembly is biased toward the second position by a spring.

A method for automatically modifying a sprinkler arc for a sprinkler including a change arm that is displaceable in a path that defines a change arm plane with an automatic reversible arc assembly including a pair of primary stop members circumferentially spaced from each other by a first amount, and a pair of secondary stop members circumferentially spaced from each other by a second amount, the method comprising:

• (a) securing the primary stop members in an active position in the change arm plane for a selectable period of time;
• (b) a timer module enabling displacement of the primary stop members from the active position to an inactive position spaced from the change arm plane after expiration of the period of time;
• and
• (c) the timer module enabling displacement of the secondary stop members to a use position in the change arm plane in which the secondary stop members are active.

An automatic reversible arc assembly for a sprinkler comprising:

• a pair of primary stop members circumferentially spaced from each other by a first amount;
• a pair of secondary stop members circumferentially spaced from each other by a second amount;
• a direction change arm configured to interact with either the pair of primary stop members or the pair of secondary stop members, wherein a path of the direction change arm defines a change arm plane;
• and
• an actuator operable to maintain the primary and secondary stop members in a first position in which the primary members are disposed in the change arm plane to interact with the direction change arm, and to maintain the primary and secondary stop members in a second position in which the secondary stop members are disposed in the change arm plane to interact with the direction change arm.