Did You Know...
...Chester Carlson was a patent agent who tired of having to make multiple copies of patent applications using the only duplication method available at the time: carbon paper. In 1959 he came up with a new copying system and took it to IBM for evaluation. The "experts" at IBM determined potential sales to be only 5,000 units because people wouldn't want to use a bulky machine when they had carbon paper. Carlson's invention was the xerography process, the company founded on the system is Xerox.
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| Number | Title | Issue Date |
| 7757966 | High-speed jet control A device is disclosed that uses a flow-control methodology to control sprays at very high precision and frequency. The device is based on an enhanced Coanda effect. The control flow is selectively applied to the region in which we desire the jet to vector and contro... | 07/20/2010 |
| RE40440 | Micro-stream rotator with adjustment of throw radius and flow rate A rotating stream sprinkler including a rotor plate supported on one end of a shaft for rotation, in an operative mode, relative to the shaft; a nozzle located along the shaft upstream of the rotor plate; the rotor plate formed with a chamber and one end of the shaf... | 07/22/2008 |
| 7395977 | Sprinkler apparatus A sprinkler apparatus 10 for providing more even coverage of a sprinkled area with water which is achieved by a different speed of rotation of a water deflector 13 relative to a water diffuser 12 in a wobbling sprinkler head. A diffuser head ... | 07/08/2008 |
| 7287711 | Adjustable arc rotor-type sprinkler with selectable uni-directional full circle nozzle rotation A sprinkler includes a drive mechanism mounted in a riser that rotates a nozzle at the top of the riser. The drive mechanism enables a user to select between oscillation of the nozzle through an adjustable arc and uni-directional full circle rotation of the nozzle. | 10/30/2007 |
| 7255291 | Multifunctional sprinkler structure A multifunctional sprinkler structure comprises a water motor having an outlet seat and a top cover mounted to a top-end side, and two adjusting seats and a water supply seat assembled onto a bottom-end side. The bottom-end side of the water motor has a guide groove... | 08/14/2007 |
| 7234652 | Double curved surface deflector system for rotary sprinklers The present invention is a double curved surface deflector system for rotary sprinklers providing for a 360-degree rotation using both clockwise and counterclockwise movements. A spray coupler directs water in forward and rear directions. The forward direction is de... | 06/26/2007 |
| 7226003 | Rotary drive sprinkler with flow control and shut off valve in nozzle housing A flow shut off or throttling valve is provided in a sprinkler nozzle housing to enable a nozzle to be changed without having to turn off a flow pressure source. The valve intersects a flow path through the nozzle housing and has an opening such that when the openin... | 06/05/2007 |
| 7168634 | Debris resistant collar for rotating stream sprinklers A sprinkler head having a deformable member forming a collar is disclosed. The deformable member allows the sprinkler head to resist entry of foreign grit or matter within the sprinkler head, and allows the sprinkler head to eject or force out foreign matter from wi... | 01/30/2007 |
| 7156322 | Irrigation sprinkler unit with cycling flow rate An irrigation sprinkler unit includes a tubular housing enclosing a speed reducing drive which is driven by a water actuated turbine wheel and rotates a rotary nozzle head at a substantially slower speed. The drive also rotates a tubular valve member within an annul... | 01/02/2007 |
| 7104472 | Constant velocity turbine and stator assemblies A rotary sprinkler system for both above-the ground and pop-up rotary sprinkler systems that controls the rate of nozzle rotation is disclosed. To maintain a relatively constant and controlled nozzle rotation, one or more chamfered spokes are included on the turbine... | 09/12/2006 |
| 7097116 | Underground sprinkler with pop-up head An underground sprinkler with a pop-up head and a corresponding underground casing has two differentiated cylindrical parts, closed by a corresponding cover fixed to the pop-up sprinkler head, which, being a part coupled to the piston, pops-up due to the effect of t... | 08/29/2006 |
| 7086609 | Swinging lawn sprinkler A swinging lawn sprinkler including a sprinkling control unit with a gear-operated transmission mechanism attached to one side of a sprinkler mount. A limiting connector having a water outlet connector engaged at one side is correspondingly matched to the gear-opera... | 08/08/2006 |
| 7070122 | Wobbling sprinkler head A wobbling irrigation sprinkler head for attachment to a water conduit has a wobbling sprinkler head facing upward from the water supply conduit. The sprinkler head has a base having an attachment portion for attaching to a water source and a nozzle mounted to the b... | 07/04/2006 |
| 7032836 | Adjustable arc, adjustable flow rate sprinkler A sprinkler head includes a base; an elongated stem having an inlet supported within the base; a nozzle and a stream deflector supported within the stem, the nozzle and stream deflector cooperating to define an arcuate orifice; a water distribution plate supported o... | 04/25/2006 |
| 7017831 | Sprinkler system A rotary sprinkler having a rotatable nozzle assembly for watering an arc of ground traversed or swept by the nozzle assembly as the nozzle assembly rotates is disclosed. Oscillating rotation is achieved via a drive train that includes a trip spring that is drivable... | 03/28/2006 |
| 7014125 | Sprinklers A rotary sprinkler (10) including a water inlet, a water outlet arranged for rotation about a rotation axis (14), a water director associated with the water outlet and a watering pattern determiner associated with at least one of the water outlets and ... | 03/21/2006 |
| 6955306 | Pivotally adjustable nozzle assembly A fluid-dispensing nozzle assembly automatically pivotally adjusts within a defined range of motion, to consistently project a fluid toward a windshield for contact at a designated area thereof, regardless of the velocity of ambient air therepast. The nozzle assembl... | 10/18/2005 |
| 6921030 | Constant velocity turbine and stator assemblies A rotary sprinkler system for both above-the ground and pop-up rotary sprinkler systems that controls the rate of nozzle rotation is disclosed. To maintain a relatively constant and controlled nozzle rotation, one or more chamfered spokes are included on the turbine... | 07/26/2005 |
| 6796273 | Switching current water director (SCWD) for aquariums The present invention relates to a water director for distributing a surge or flow of water to one or more of a plurality of output ports, which can vary in shape, size, and number, typically for use in marine and fresh water aquariums. Water pumped through a condui... | 09/28/2004 |
| 6745955 | Spraying apparatus A spraying apparatus is disclosed for spraying coating material onto an internal wall of a cylindrical structure having an opening. The apparatus includes a spraying assembly which has a first and a second end. A support is secured to the spraying assembly, the supp... | 06/08/2004 |
| 6736332 | Adjustable arc, adjustable flow rate sprinkler A sprinkler head includes a base adapted to be secured to a component supplying water under pressure; an arc adjustment ring rotatably mounted on the base; a nozzle and a stream deflector supported by an elongated stem carried by the base, the nozzle and the stream ... | 05/18/2004 |
| 6607147 | High volume sprinkler automated arc changer An actuator assembly for a rotatable sprinkler head includes a base supported for rotation on a stationary platform assembly, a hub mounted for rotation on a shaft supported in the base; a lever arm pivotally mounted at one end to the hub and extending do... | 08/19/2003 |
| 6478237 | Enclosed pop-up sprinklers with shielded impact arms 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 low... | 11/12/2002 |
| 6267299 | Nutating sprinkler with gimbal bearing A nutating sprinkler assembly includes a sprinkler body having one end adapted to be coupled to a water supply conduit and an opposite end supporting a nozzle. At least one arm extends from the sprinkler body for supporting a removable cap assembly downst... | 07/31/2001 |
| 6264118 | Strip irrigator A Strip irrigator comprising a body member fitted with an inlet for coupling to an irrigation water supply and an outlet nozzle of said body member, defining a longitudinal axis, a distribution member formed with a water engaging portion consisting of two... | 07/24/2001 |
| 6209801 | Closed-case impact sprinklers with fitted fluid seal assemblies 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 low... | 04/03/2001 |
| 6155493 | Closed-case impact sprinklers 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... | 12/05/2000 |
| 6076746 | Strip irrigator A Strip irrigator comprising a body member fitted with an inlet for coupling to an irrigation water supply and an outlet nozzle of said body member, defining a longitudinal axis, a distribution member formed with a water engaging portion consisting of two... | 06/20/2000 |
| 5992760 | Impact sprinkler unit 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, ... | 11/30/1999 |
| 5697392 | Apparatus for spraying washing fluid A spray assembly for a dishwasher includes a fluid pump and a spray tower. The spray tower includes a lower stationary member and an upper rotatable member and includes a fluid cavity therein. The rotatable member has at least one spray opening adjacent i... | 12/16/1997 |
| 5392990 | Firefighting double-nozzle deluge gun and control method thereof A double-nozzle deluge gun has a pair of nozzles arranged side by side rotatably on a rotatable table and an inter-nozzle control unit for adjusting the inter-nozzle angle measured between two lines obtained by projecting the radiation center lines of the... | 02/28/1995 |
| 5381960 | Wobbling irrigation sprinkler head including a magnet for initial tilt A wobbling irrigation sprinkler head is provided for use on a self-propelled mechanically moving irrigation system, such as a center pivot field irrigation system having the wobbling sprinkler head facing downward from the water supply conduit. The sprink... | 01/17/1995 |
| 5292070 | Apparatus for the integral sprinkling of liquids laden with solid materials in suspension The subject matter of the invention is an apparatus for the integral sprinkling of liquids laden with solid materials in suspension of appropriate granulometry, such as a blanket of marc in wine-making, contained in a vat having a vertically movable cone ... | 03/08/1994 |
| 4984740 | Water sprinkler with variable stream-distance adjustment An improved water-sprinkler having a vertically-pivotal control flap that is adjustably positionable with respect to the outlet of the nozzle, which controls the distances the emerging water-stream will reach. The control flap has an inner bracket-end tha... | 01/15/1991 |
| 4867378 | Sprinkler device A sprinkler having a nozzle for directing a desired flow of water therefrom, the sprinkler having a water turbine drive device for rotating the nozzle in response to water passing through the sprinkler; the sprinkler has a seal between its cover and housi... | 09/19/1989 |
| 4836449 | Sprinkler unit with stream deflector A sprinkler unit having a continuously rotating nozzle includes a stream interruptor comprising a pin mounted on a carriage pivotally mounted on the nozzle and a cam surrounding the nozzle that has a series of cam surfaces for intermittently caming the ca... | 06/06/1989 |
| 4836450 | Sprinkler unit with alternating stream interruptor A reversible sprinkler unit includes a stream interruptor that includes a finger that moves into the stream for interrupting it on one direction of rotation of the nozzle and moves out of the stream on the other direction of rotation of the nozzle.... | 06/06/1989 |
| 4720045 | Large volume sprinkler head with part-circle step by step movements in both directions A sprinkler head capable of generally uniform operation under varying local source pressure conditions in a part circle mode wherein reversing directions of movement at the ends of the part circle pattern is accomplished without establishing excessive rev... | 01/19/1988 |
| 4669663 | Large volume sprinkler head with part-circle step by step movements in both directions A large capacity agricultural irrigation sprinkler head of the rotary step by step impulse type operating in a part-circle mode with a step by step reversing movement. The sprinkler head embodies an improved sprinkler body including an elongated barrel le... | 06/02/1987 |
| 4648558 | Sprinkler assembly A sprinkler assembly having a discharge nozzle for discharging water at a substantially constant volume and velocity driven rotatably about a vertical axis by a water turbine and gear drive for rotating said nozzle at varying rotational speeds in each cyc... | 03/10/1987 |
