Abstract: A universal lid closure for underground landscape and other utility access boxes uses flexible tongues depending from the underside of the lid and adapted to engage the interior of the access box, which box may have any one of various constructions. In one embodiment, the tongues have a plurality of diametrically opposed pairs of locking detents, each pair defining a different vertical position, to engage an annular locking shoulder on the interior of the box to secure the lid in the closed position.

Abstract: A universal lid closure for underground landscape boxes that universally adapts to all underground landscape box sizes by the design of flexible flaps Mat extend radially outwardly from their attachments to the lid body. The flaps are preferably of varying lengths and widths. A plurality of flexible flaps prevent accidental lid removal by exerting resilient force at a precise angle on the underground landscape box wall. A lid top is provided to enclose all box opening circumferences in each box class, and the flexible flaps are molded at a precise angle to horizontal to deter fatigue within the flexible flap.

Abstract: A universal lid closure for underground landscape and other utility access boxes uses flexible tongues depending from the underside of the lid and adapted to engage the interior of the access box, which box may have any one of various constructions. In one embodiment, the tongues have a plurality of diametrically opposed pairs of locking detents, each pair defining a different vertical position, to engage an annular locking shoulder on the interior of the box to secure the lid in the closed position.

Abstract: A dirt-resistant bearing system for a sprinkler unit with a rotatable turret having a central shaft extending into a support channel formed within an inner housing. The central shaft may be formed with a relatively upper shaft portion and a relatively lower shaft portion, and the support channel may be formed with an upper channel region and a lower channel region. A first bearing and sealing assembly may be fitted substantially around an outer perimeter of the upper shaft portion and in communication with the upper channel region, and a second bearing and sealing assembly may be fitted substantially around an outer perimeter of the lower shaft portion and in communication with the lower channel region. Another aspect of the invention provides a sprinkler head with a fitted serrated seal assembly. The fitted seal assembly may include an outer case having an interior region, and a pop-up sprinkler head turret mounted on a riser sleeve slidably mounted within the interior region of the outer case.

Abstract: A dirt-resistant bearing system for a sprinkler unit with a rotatable turret having a central shaft extending into a support channel formed within an inner housing. The central shaft may be formed with a relatively upper shaft portion and a relatively lower shaft portion, and the support channel may be formed with an upper channel region and a lower channel region. A first bearing and sealing assembly may be fitted substantially around an outer perimeter of the upper shaft portion and in communication with the upper channel region, and a second bearing and sealing assembly may be fitted substantially around an outer perimeter of the lower shaft portion and in communication with the lower channel region. Another aspect of the invention provides a sprinkler head with a fitted serrated seal assembly. The fitted seal assembly may include an outer case having an interior region, and a pop-up sprinkler head turret mounted on a riser sleeve slidably mounted within the interior region of the outer case.

Abstract: A dirt-resistant bearing system for a sprinkler unit with a rotatable turret having a central shaft extending into a support channel formed within an inner housing. The central shaft may be formed with a relatively upper shaft portion and a relatively lower shaft portion, and the support channel may be formed with an upper channel region and a lower channel region. A first bearing and sealing assembly may be fitted substantially around an outer perimeter of the upper shaft portion and in communication with the upper channel region, and a second bearing and sealing assembly may be fitted substantially around an outer perimeter of the lower shaft portion and in communication with the lower channel region. Another aspect of the invention provides a sprinkler head with a fitted serrated seal assembly. The fitted seal assembly may include an outer case having an interior region, and a pop-up sprinkler head turret mounted on a riser sleeve slidably mounted within the interior region of the outer case.

Abstract: A closed-case impact sprinkler unit having an outer case and an internally positioned riser sleeve that is upwardly extendable into a pop-up position. The riser sleeve may be formed with an external surface that is complimentary to the internal surface of the outer case to prevent the introduction of debris into the interior region of the outer case when the riser sleeve is in a pop-up position. The sprinkler unit may further include a closed-case turret assembly rotatably mounted on the riser sleeve that includes a fluid outlet and a compact impact sprinkler arm.

Abstract: A sprinkler device for distributing water comprising a body, a nozzle, a nozzle housing rotatably and slidably mounted in the body, a fluid flow interrupter for intermittently redirecting the stream of fluid exiting from the nozzle, an interrupter drive, a flow control assembly including a free floating valve for controlling water flow to the sprinkler head, reversing mechanism for reversing the direction of movement of the nozzle housing, and a nozzle positioning system for controlling sprinkler rotation speed.