Adjustable To Alter Degree Of Deflection Patents (Class 239/513)
  • Patent number: 4991780
    Abstract: A duocone spray nozzle having two concentric peripheral orifices which will produce two hollow spray cones, one inside the other. Each orifice size is varied by employing its own spring and each spring acts independently and is compressed under its own pressure drop. The springs are designed so that the inner spring will open the inner orifice at a pressure drop which is lower than the pressure drop occurring at the outer office. Therefore, the inner spray cone occurs before the outer spray cone. When the pressure drop at the inner orifice exceeds a predetermined value, the outer orifice opens and after this occurs there will be two spray cones. A hold structure aids in separating the two spray cones.
    Type: Grant
    Filed: January 29, 1990
    Date of Patent: February 12, 1991
    Assignee: Crane Co.
    Inventors: Raghavachari Kannan, Bernard A. Lewandowski
  • Patent number: 4984740
    Abstract: 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 that is pivotally mounted to a pivot block at the lower end of the bracket end, the upper part of the bracket-end being pivotally connected to a distal end of a control arm that is horizontally-adjustable via a series of circularly-arranged, independently and horizontally-movable sliding reeds or blocks, the distance of these sliding blocks from their radial center determining the horizontal position of the other end of the control arm, and, therefore, the end of the control arm connected to the upper end of the flap, whereby the spacing of the flap from the nozzle-outlet may be cyclically changed according to a desired pattern determined by the relative radial positions of the plurality of sliding blocks.
    Type: Grant
    Filed: June 19, 1989
    Date of Patent: January 15, 1991
    Inventor: Robert B. Hodge
  • Patent number: 4978070
    Abstract: A pulsating sprinkler incorporating a three-position trip mechanism facilitating forward/reverse rotation and continuous rotation. The trip mechanism includes a trigger for reversing direction of rotation of the sprinkler, a latch for engaging an impact arm, and a control arm for maintaining the trigger in a fixed position. The trigger, latch and control arm are joined to a common pivot on the sprinkler body. A multiple position diffuser and deflector lever is adjustable for various degrees of diffusion or deflection of a water stream. The sprinkler body is easily removed from the bushing assembly by compression of snap fingers located at a terminal end of the spring body. Further, an O-ring radially seals a space between the bushing assembly and the sprinkler body. An impact arm having two plates with separated vanes extending between the plates or an impact arm with a single plate with two downwardly projecting vanes may be used for ease in molding and increasing manufacturing efficiency.
    Type: Grant
    Filed: August 11, 1989
    Date of Patent: December 18, 1990
    Assignee: Hunter-melnor, Inc.
    Inventor: Ho Chow
  • Patent number: 4858829
    Abstract: A universal advancement deflector for impact irrigators, comprising a cylindrical surface portion (15) pivoted about an axis (11) spaced from its barycenter, and urged towards the irrigation jet so that it becomes inserted therein with one of its edges and its longitudinal axis disposed respectively tangentially and orthogonally to said jet, so that it inclines in order to provide a reaction component which causes it to emerge from the jet; the load which the surface (15) presents to the jet and its rocking range being adjustable.
    Type: Grant
    Filed: February 23, 1984
    Date of Patent: August 22, 1989
    Inventor: Arno Drechsel
  • Patent number: 4840312
    Abstract: A sprinkler (10) including a riser assembly (14) and a removable nozzle module (34) operatively connected thereto. Nozzle module (34) includes a nozzle holder (36) and a nozzle (38). Nozzle holder (36) is accessible even when sprinkler (10) is buried and the riser assembly (14) is completely retracted. In a preferred embodiment, a bayonet fit exists between nozzle module (34) and riser assembly (14) so that it is only necessary to twist nozzle module (34) a few degrees to disconnect it from riser assembly (14). Once nozzle module (34) is removed, nozzle (38) can be replaced or unplugged as necessary.
    Type: Grant
    Filed: November 20, 1987
    Date of Patent: June 20, 1989
    Assignee: The Toro Company
    Inventor: Stephen L. Tyler
  • Patent number: 4813605
    Abstract: A system which has a body (20) with internal pasageways and a hollow connecting sleeve (24) attached thereto. A hollow union (32) is rotatably retained on the sleeve (24) and a gasket (30) provides a seal therebetween. A pair of adjustable arm stops (34) attach to the union (32) confining the rotational movement. A nozzle (36) is joined to the body (20) with an arm (42) distending parallel with the nozzle (36) and a pivotal member (44) extends upwardly therefrom. A plate (46) is swivelly mounted on the member (44) with means to limit the pivotal movement connected to the arm (42). The fluid from the nozzle (36) impinges on the plate producing unequal torque on opposed sides of the plate (46) as it pivots upon the member (44) causing the entire arm (42) to axially advance. In the reversing embodiment a torque differential and flow impingement upon the stop (34) combine energy functions and reversers.
    Type: Grant
    Filed: March 30, 1987
    Date of Patent: March 21, 1989
    Inventor: Frank J. Fuller
  • Patent number: 4784329
    Abstract: A portable lawn sprinkler comprising a housing assembly having means defining a fixed horizontally extending water inlet having a female hose fitting on the exterior end thereof and a spaced fixed annular wall providing an interior periphery defining an annular vertically opening water outlet. A speed reducing unit is mounted within the housing assembly. An impeller is drivingly associated with the input shaft of the speed reducing unit in a position to be rotated by water under pressure flowing from the inlet to the outlet. A rotary water distributor is fixed to the output shaft of the speed reducing unit disposed in water communicating relation with the outlet. An annular member is mounted for axial movement within the annular water outlet and in surrounding relation with the output shaft and has an exterior periphery disposed within the interior periphery of said fixed annular wall.
    Type: Grant
    Filed: June 17, 1986
    Date of Patent: November 15, 1988
    Assignee: L. R. Nelson Corporation
    Inventor: Lawrence P. Heren
  • Patent number: 4760958
    Abstract: A sprinkler comprises a nozzle head connectable to a source of pressurized water and including a nozzle bore through which the water issues in the form of a jet, and a rotary deflector having an underface formed with a radial array of grooves each having axially-extending inlet ends, radially-extending outlet ends, curved junctures joining the two ends, and curved bottom faces, which grooves are impinged by the water jet and deflect the jet laterally of the sprinkler while rotating the deflector. An adjustable mounting is provided for the rotary deflector enabling it to be mounted with its rotary axis at a plurality of different positions with respect to the axis of the nozzle bore, to vary the water distribution pattern produced by the rotary deflector laterally of the spinkler.
    Type: Grant
    Filed: January 27, 1987
    Date of Patent: August 2, 1988
    Assignee: Plastro Gvat and Agroteam Consultants Ltd.
    Inventor: Ilan Greenberg
  • Patent number: 4699322
    Abstract: An air discharge nozzle for ventilating and air conditioning systems and the like is disclosed having directional strips that are disposed pivotably in the discharge jet and are adjustable for directional control of outflow. The arrangement is such that the air can flow through only between any two strips and accordingly, only those partial discharge currents that are oriented by means of the strips are produced.
    Type: Grant
    Filed: May 19, 1986
    Date of Patent: October 13, 1987
    Assignee: General Motors Corporation
    Inventor: Wolfgang Jobst
  • Patent number: 4570533
    Abstract: A fluid deflecting assembly comprising a passage defining structure having a fluid passage defined therein for the passage of a fluid stream in one direction therethrough and having a fluid inlet and a fluid exit spaced apart from the fluid inlet, and at least one group of deflector blades pivotally supported within the passage defining structure adjacent the fluid exit for movement through a predetermined angle and arranged in such a curved row that, when the deflector blades are pivoted in one direction to a deflecting position, the deflecting blades altogether form a generally continuously curved guide wall extending within the passage defining structure so as to diverge away from the direction of flow of the fluid stream through the passage. The guide wall is operable to draw the fluid stream close thereto to deflect the fluid stream as a whole by the Coanda effect known per se as it emerges outwards from the fluid exit.
    Type: Grant
    Filed: October 15, 1984
    Date of Patent: February 18, 1986
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventors: Norio Sugawara, Motoyuki Nawa
  • Patent number: 4566632
    Abstract: A step-by-step rotary sprinkler head comprising a sprinkler body having an inlet and at least one outlet communicating with the inlet, a mounting assembly supporting the sprinkler body for rotational movement about a generally vertical axis operable to communicate the inlet of the sprinkler body with a source of water under pressure, a nozzle in the outlet for directing water under pressure communicated with the inlet outwardly of the nozzle in a cylindrical water stream flowing in an upward and outward direction, a drive spoon arm assembly mounted for rotational movement with the sprinkler body and for cyclical movements with respect thereto between a position of stream engagement and a spaced position out of stream engagement for effecting step-by-step rotational movement of the sprinkler body in conjunction with the cyclical movements, and a stream diffusing assembly disposed outwardly of the position of stream engagement of the drive spoon for engaging the cylindrical water stream when the latter is out o
    Type: Grant
    Filed: May 5, 1983
    Date of Patent: January 28, 1986
    Assignee: Nelson Irrigation Corporation
    Inventor: George L. Sesser
  • Patent number: 4548052
    Abstract: A steel strip (10) is conveyed through a galvanizing bath (20) of molten zinc, a zinc coating weight control device (12), and a minispangle box assembly (16). The steel strip emerges from the zinc coating weight control device (12) with a non-uniform temperature distribution across its width in which it is warmer in the center and cooler at its edges. A differential, pre-cooler assembly (18) cools the steel strip selectively and non-uniformly across its width in a manner which is complimentary to the temperature distribution thereacross. In this manner, the steel strip exits the pre-cooler assembly (18) and enters the minispangle box assembly (16) with a more uniform temperature distribution. This results in a more uniform minispangle appearance on the strip (10) as it exits the minispangle box assembly (16). The pre-cooler assembly includes a plurality of nozzle pairs (32a, 32b; 34a, 34b; 36a, 36b; 38a, 38b).
    Type: Grant
    Filed: January 30, 1985
    Date of Patent: October 22, 1985
    Assignee: Midland-Ross Corporation
    Inventor: Max Hoetzl
  • Patent number: 4484709
    Abstract: A sprinkler deflector including a generally flat, elongate base and upwardly and outwardly V-shaped deflector arms is mounted between a sprinkler head and a riser via a hole in the elongate base. The V-shaped deflector arms deflect water from the sprinkler head upwardly and outwardly to provide unwatered areas about the edge of an otherwise circular watered area. The unwatered areas are positioned to coincide with the tree trunks in an orchard. The width and the depth or minimum radius of each unwatered area is changed by changing the angle at which the deflector arm extends from the base.
    Type: Grant
    Filed: January 15, 1982
    Date of Patent: November 27, 1984
    Assignee: William C. Hosie, Inc.
    Inventor: William C. Hosie
  • Patent number: 4465459
    Abstract: A burner is disclosed for alternatively burning coal dust or oil. An annular housing includes a blower at one end thereof for directing a rotating air stream through the housing. A chamber located downstream from the blower has a plurality of outlet pipes extending downstream therefrom in an annular configuration about an atomizing nozzle and an eddy plate. An adjustable burner head is mounted on the end of each of the outlet pipes, the burner heads being arranged for optimum mixture of coal dust and air, fed from the chamber through the outlet pipes to the burner heads, with the rotating air stream passing about and through a hole in the eddy plate to insure optimum combustion. An oil ignition auxiliary burner having a nozzle between the eddy plate and the outlet end of the chamber serves to ignite the coal dust and air mixture. An atomizing nozzle for feeding atomized oil into the burner is provided as an alternative fuel source.
    Type: Grant
    Filed: January 4, 1982
    Date of Patent: August 14, 1984
    Inventor: Erich Benninghoven
  • Patent number: 4353506
    Abstract: A pop-up sprinkler assembly of the type including an internally driven rotary sprinkler head having a multiplicity of annularly spaced flow passages through which the flow of water is controlled by a fixed pattern plate. The assembly is provided with a manually operable pattern plate mounting member for adjusting the fixed cooperating relationship of the pattern plate with the rotary sprinkler head so that the orientation of the ground pattern area within which the water streams fall can be easily determined.
    Type: Grant
    Filed: September 15, 1980
    Date of Patent: October 12, 1982
    Assignee: L. R. Nelson Corporation
    Inventor: Jerry R. Hayes
  • Patent number: 4277029
    Abstract: A sprinkler for irrigating a square or other polygonally-shaped land area with the sprinkler including a unique structure which will accurately distribute an equal quantity of water on each increment of land area being irrigated. The sprinkler includes a rotatable nozzle in which the speed of the nozzle is varied by a gear drive mechanism which receives its power from a water powered turbine device. The rotational speed of the nozzle is slower when irrigating corner area of the land area being irrigated and faster when irrigating intermediate straight-sided portions of the land area with the nozzle including a diffuser which becomes operative to reduce the length of trajectory of the water being discharged when the sprinkler is irrigating the intermediate straight-sided portions of the land area being irrigated.
    Type: Grant
    Filed: December 3, 1979
    Date of Patent: July 7, 1981
    Inventor: Benjamin F. Rabitsch