A spool and wobbler assembly for a sprinkler includes a spool section with facing spool flanges on opposite sides of a spool core, where at least one of the spool flanges includes a circumferential rolling ledge. A wobbler cage including a wobbler ring is supported on the spool section, and a water deflector plate is coupled with the wobbler cage. An underside of the wobbler ring is provided with a circumferential rolling surface that engages the circumferential rolling ledge of the at least one spool flange. The rolling surface and rolling ledge provide for smoother orbital motion of the deflector plate.

A spray gun includes a barrel having a path between an entrance and an outlet. A guide member is connected to the outlet. A rotary member has a tapered way defined therein, and a Venturi tube is partially located in the tapered way. A spray head is connected to the front end of the barrel and has an orifice defined in the spray head. A room is formed by the guide member and the spray head. The rotary member is located in the room. Pressurized liquid passes through the path and enters into the room to rotate the rotary member, and the detergent is sucked by the Venturi tube and spread out from the orifice in a rotational pattern.

A liquid-emitting device for gravity-based irrigation systems includes a support structure that defines a first axis and has a nozzle for generating an irrigation jet coaxial with the first axis, a tubular body below the support structure, and a baffle plate facing the nozzle and rotatably mounted in the tubular body to rotate about a second axis. The nozzle is stationary and the second axis is free to rotate about the first axis with a precessional motion. Guides are removably coupled to the tubular body to interact with the baffle plate and prevent the precessional motion while allowing the rotational motion about the second axis. A diverting member may be removably positioned downstream from the nozzle to distribute the liquid over an area of the soil. An arrangement of a nutating liquid-emitting device in combination with an anti-nutating adaptation kit is also disclosed.

A sprinkler comprises a sprinkler head (102) and a sprinkler base (101). The sprinkler base comprises a hollow body having an inlet (104) and a first outlet (105). The first outlet (105) is in fluid communication with the inlet (104). The inlet (104) has an inlet axial orientation which is substantially perpendicular to a first outlet axial orientation of the first outlet (105), which is perpendicular to the inlet axial orientation. The sprinkler base (101) further comprises two or more sprinkler head protection elements (115) located onopposite sides of the first outlet and extending beyond the first outlet in the direction of the first outlet axial orientation.

A rigid mount orbiter sprinkler assembly incorporates a deflector plate configuration that is configured for both spinning/rotating motion as well as orbital or wobbling motion around the center of a spool assembly. The sprinkler incorporates structure to reduce drool that may fall in a concentrated area below the sprinkler and to prevent debris from sandy water or the like from accelerating sprinkler component wear. With reduced vibration, the assembly may be rigidly mounted on a center pivot or other supporting structure while achieving the advantages associated with wobbling and rotating sprinkler assemblies.

A sprinkler head having a spool assembly for nutating within the sprinkler head. The spool assembly has a spool attached by one or more arms to a distribution disc. The sprinkler head has a nozzle configured to spray a fluid stream through a central bore of the spool onto the distribution disc, causing nutation of the spool assembly within the sprinkler head. The spool assembly is configured with two friction bands that are each configured to radially roll in or on a respective race within the sprinkler body. The friction bands can be integrally formed with the spool assembly or positioned on the spool surface.

A sprinkler assembly with a nutating distribution plate can improve even distribution of water. The distribution plate can tilt and/or translate upon water impinging the distribution plate to disperse water in different directions. The sprinkler assembly can have a deflector assembly including the distribution plate, a stem supported by a bearing, and a contact portion upstream of the distribution plate to contact an outer race that limits a range of movement of the distribution plate. The sprinkler assembly can be disassembled and reassembled with minimal tools and effort for servicing.

A sprinkler assembly with a nutating distribution plate can improve even distribution of water. The distribution plate can tilt and/or translate upon water impinging the distribution plate to disperse water in different directions. The sprinkler assembly can have a deflector assembly including the distribution plate, a spindle supported by a bearing, and a contact portion downstream of the distribution plate to contact a housing that limits a range of movement of the distribution plate. The sprinkler assembly can be disassembled and reassembled with minimal tools and effort for servicing.

A rigid mount orbitor sprinkler assembly incorporates a deflector plate configuration that is configured for both spinning/rotating motion as well as orbital or wobbling motion around the center of a spool assembly. The sprinkler incorporates structure to reduce drool that may fall in a concentrated area below the sprinkler and to prevent debris from sandy water or the like from accelerating sprinkler component wear. With reduced vibration, the assembly may be rigidly mounted on a center pivot or other supporting structure while achieving the advantages associated with wobbling and rotating sprinkler assemblies.

A sprinkler assembly can include a water inlet and a nozzle assembly. The nozzle assembly can include a nozzle tube having a nozzle positioned at the downstream end of the nozzle tube. The sprinkler assembly can include a user replaceable wear disc at least partially surrounding the nozzle tube. A deflector assembly can be connected to the nozzle assembly and can include a distribution plate positioned downstream of the nozzle and configured to deflect water from the nozzle. The deflector assembly can include a cage having one or more arms connected to the distribution plate and extending from the distribution plate toward upstream end of the nozzle tube. The deflector assembly can include an upstream collar portion connected to the at least one arm and having one or more load surfaces configured to contact the wear disc, wherein the wear disc is configured to bear at least a majority of a weight of the deflector assembly.