Abstract: An irrigation sprinkler includes a riser and a nozzle rotatably mounted at an upper end of the riser. A gear train reduction is mounted in the riser and a turbine is coupled to the gear train reduction for rotation by water entering a lower end of the riser. A gear driven coupling mechanism mounted in the riser couples the gear train reduction and the nozzle. A pressure regulator is mounted in the riser and is adjustable from a top-side of the sprinkler.

Abstract: A sprinkler includes a turbine, a nozzle, a gear train reduction and a reversing mechanism that rotatably couples the gear train reduction and the nozzle. The gear train reduction includes an input stage and a planetary gear drive output stage that includes a first portion of the reversing mechanism. A second portion of the reversing mechanism is located outside of the gear train reduction. The second portion of the reversing mechanism includes a pair of arc tabs. At least one of the arc tabs is adjustable to establish an arc of coverage of the sprinkler when the water flowing past the turbine causes the gear train reduction and the reversing mechanism to oscillate the nozzle back and forth between a pair of arc stops. The arc stops are defined by the locations of the arc tabs. The input stage of the gear train reduction includes a mechanism that allows manual rotation of the nozzle between the arc stops without having to back drive the gears in the input stage.

Abstract: An irrigation sprinkler has a riser assembly that includes a rotatably mounted nozzle turret, a secondary nozzle holder removably mounted on the nozzle turret, and a turbine. A drive assembly is mounted in the riser assembly and couples the turbine and the nozzle turret so that pressurized water entering a lower end of the riser assembly will cause the nozzle turret to rotate. The nozzle turret has a primary nozzle and the secondary nozzle holder has at least one secondary nozzle.

Abstract: An irrigation sprinkler includes an outer case and a riser extensible from the outer case by water pressure and normally in a retracted position. A nozzle is rotatably mounted at an upper end of the riser. A turbine is mounted in the riser for rotation by water entering a lower end of the riser. A gear train reduction is mounted in the riser. A gear driven coupling mechanism mounted in the riser couples the gear train reduction and the nozzle. A pressure regulator valve is located inside a nozzle turret of the sprinkler and includes a valve member that is pivotably mounted between the gear train reduction and the nozzle.

Abstract: An irrigation sprinkler includes a riser and a nozzle mounted at an upper end of the riser for rotation and configured with a high flow rate port and a low flow rate port that can each emit a stream of water from a high flow rate nozzle port and a low flow rate nozzle port. The sprinkler further includes a diverter valve that can intermittently shift the flow of water between the high flow rate port and the low flow rate port as the nozzle rotates. The sprinkler also includes a gear train reduction mounted in the riser and coupled to rotate the nozzle. A turbine is coupled to an input shaft of the gear train reduction and is rotatable by water flowing through the riser.

Abstract: An irrigation sprinkler includes a riser and a nozzle mounted at the top of the riser that can rotate and emit a stream of water. The sprinkler further includes a diffuser mechanism that can intermittently interrupt the stream of water as the nozzle rotates. A gear train reduction is mounted in the riser and a turbine is coupled to an input shaft of the gear train reduction and is rotatable by water flowing through the riser. A drive assembly couples the nozzle and the gear train reduction and is configured to allow a user to select between a full-circle mode of operation and an oscillating mode of operation.

Abstract: A sprinkler has a hollow outer case and a riser vertically reciprocable within the outer case through an upper end thereof. A nozzle is mounted at an upper end of the riser. A body cap fits over the upper end of the outer case and retains the riser. The body cap has a plurality of circumferentially spaced vertical ribs that connect a reduced diameter upper portion of the body cap with an enlarged lower portion of the body cap. An elastomeric cover extends over at least the reduced diameter upper portion of the body cap and at least a portion of the ribs.

Abstract: A sprinkler includes a nozzle and a cover configured for enclosing the nozzle. A hydraulically actuated mechanism supports the cover above the nozzle for reciprocation relative to the nozzle between a lower closed position and a raised open position.

Abstract: A pop-up rotor-type irrigation sprinkler includes an outer case and a riser assembly telescopically extensible from the outer case. A coil spring surrounds the riser assembly and normally holds the riser assembly in a lower retracted position within the outer case. The coil spring is dimensioned and configured to permit extension of the riser assembly to a raised upper position when pressurized water is introduced into the outer case. A cushion made of an elastomeric material is retained in the outer case adjacent an end thereof and surrounds the riser assembly. The cushion may be solid and may move between hard structures to facilitate absorption of the shock of the impact caused by rapid extension of the riser assembly to its raised upper position. The cushion may also include a plurality of voids that facilitate deformation and shock absorption.

Abstract: The invention is a followspot and a method for retrofitting an existing followspot, which preferably involves replacing a quartz xenon short arc lamp and separate reflector with a xenon short arc ceramic lamp, which has a built-in reflector. The retrofit of the present invention will provide faster focal length, more light output, and an increased lighting efficiency.

Abstract: A sprinkler includes a turbine, a nozzle, and a reversing planetary gear drive. The reversing planetary gear drive rotatably couples the turbine and the nozzle through an additional reversing mechanism external to the planetary gear drive. The planetary gear drive includes a shift sun gear capable of axially shifting between raised and lowered positions to alternately drive a non-axially shifting first planet gear that in turn drives a first ring gear and a non-axially shifting second planet gear that in turn drives a second ring gear through an idler gear, the first and second ring gears having different gear tooth profiles to thereby change a direction of rotation of the planetary gear drive and rotate the nozzle in clockwise and counter-clockwise directions at a substantially uniform predetermined speed of rotation.

Abstract: A sprinkler includes a turbine, a nozzle, a planetary gear drive and a reversing mechanism. The planetary gear drive and the reversing mechanism rotatably couple the turbine and the nozzle. The planetary gear drive includes a control shaft that is axially movable to shift a direction of rotation of an output stage that is coupled to the reversing mechanism. The reversing mechanism includes a shift member secured to an upper end of the control shaft. The reversing mechanism further includes a pivotable shift fork with a first cam and a second cam spaced from the first cam. The first cam is configured to engage the shift member and raise the control shaft when the shift fork is pivoted to engage the first cam with the shift member. The second cam is configured to engage the shift member and lower the control shaft when the shift fork is pivoted to engage the second cam with the shift member.

Abstract: A sprinkler includes a turbine, a nozzle, a gear train reduction and a reversing mechanism that rotatably couples the gear train reduction and the nozzle. The gear train reduction includes an input stage and a planetary gear drive output stage that includes a first portion of the reversing mechanism. A second portion of the reversing mechanism is located outside of the gear train reduction. The second portion of the reversing mechanism includes a pair of arc tabs. At least one of the arc tabs is adjustable to establish an arc of coverage of the sprinkler when the water flowing past the turbine causes the gear train reduction and the reversing mechanism to oscillate the nozzle back and forth between a pair of arc stops. The arc stops are defined by the locations of the arc tabs. The input stage of the gear train reduction includes a mechanism that allows manual rotation of the nozzle between the arc stops without having to back drive the gears in the input stage.

Abstract: A solenoid actuated pilot valve includes a pilot valve housing defining a pilot valve chamber and a solenoid. The solenoid includes and end cap connected to the pilot valve housing, a reciprocable plunger, and a piston having a shaft with a first end connected to and end of the plunger and a second end connected to a piston head. The end cap has a bore through which the shaft of the piston reciprocates and a first port separate from the bore. A first seal on a first side of the piston head is provided for sealing a first end of the first port. A second seal on a second side of the piston head is provided for sealing a first end of a second port in the pilot valve housing.

Abstract: A sprinkler includes a stream nozzle with a plurality of circumferentially spaced, radially extending stream forming ports. A non-rotating arc adjustment sleeve is mounted for axial movement relative to the stream nozzle to selectively block the stream forming ports to vary an arc of coverage of a plurality of streams of water ejected from the stream forming ports.

Abstract: An irrigation sprinkler includes an outer case and a riser extensible from the outer case by water pressure and normally in a retracted position. A nozzle is rotatably mounted at an upper end of the riser. A turbine is mounted in the riser for rotation by water entering a lower end of the riser. A gear train reduction is mounted in the riser. A gear driven coupling mechanism mounted in the riser couples the gear train reduction and the nozzle. A pressure regulator valve is located inside a nozzle turret of the sprinkler and includes a valve member that is pivotably mounted between the gear train reduction and the nozzle.

Abstract: A sprinkler comprises a nozzle, a turbine and a gear train reduction. The gear train reduction has an output stage that is coupled to the nozzle. The turbine is located between the nozzle and the gear train reduction and is coupled to an input stage of the gear train reduction.

Abstract: A sprinkler includes a turbine, a gear drive, a nozzle turret, and a nozzle that is installed in the turret. The gear drive rotatably couples the turbine and the nozzle. The nozzle has an exit angle which is different from its entry angle to change the trajectory of the water as it passes through the nozzle. The nozzle can be installed in an orientation to increase the trajectory of the water leaving the sprinkler, or installed in an orientation to decrease the trajectory of the water leaving the sprinkler.

Abstract: A sprinkler comprises a nozzle, a turbine and a gear train reduction. The gear train reduction has an output stage that is coupled to the nozzle. The turbine is located between the nozzle and the gear train reduction and is coupled to an input stage of the gear train reduction.

Abstract: A sprinkler comprises a nozzle, a turbine and a gear train reduction. The gear train reduction has an output stage that is coupled to the nozzle. The turbine is located between the nozzle and the gear train reduction and is coupled to an input stage of the gear train reduction.