Patents Assigned to L. R. Nelson
  • Patent number: 4568023
    Abstract: A uniform water pattern oscillating wave type lawn sprinkler in which the impeller has a dynamic impeller ratio as herein defined of less than approximately 0.30, the reduction gear assembly has a gear reduction ratio of greater than approximately 400 to 1 and an efficiency of at least 26% preferably 39% or greater and the heart-shaped cam motion-transmitting mechanism has a heart-shaped cam with a cam factor as herein defined of less than approximately 3 so as to enable said housing structure to be an optimal minimum in size.
    Type: Grant
    Filed: June 30, 1983
    Date of Patent: February 4, 1986
    Assignee: L. R. Nelson Corporation
    Inventor: Jerry R. Hayes
  • Patent number: 4443028
    Abstract: A three component coupling assembly consisting essentially of plastic male and female coupling members and an annular seal. The female member has a male fitting engaging end portion formed with interior threads for cooperatively threadedly engaging a threaded male hose fitting. The remaining female coupling portion has a generally cylindrical interior periphery of a smaller diameter size defining at a position adjacent the inner end of the interior threads an annular shoulder. The interior periphery has formed therein a plurality of annularly spaced grooves extending from the outer end thereof through the annular shoulder and a corresponding plurality of correspondingly annularly spaced notches extending from the annular shoulder toward the outer end. The seal has an outer annular portion seaingly engaging an uninterrupted outer sealing surface of the shoulder and an inner annular portion extending over the notches and grooves formed in the shoulder.
    Type: Grant
    Filed: August 14, 1981
    Date of Patent: April 17, 1984
    Assignee: L. R. Nelson Corporation, Inc.
    Inventor: Jerry R. Hayes
  • Patent number: 4432495
    Abstract: An improvement in a pop-up sprinkler which comprises the provision of an upwardly facing annular valve seat in the lower portion of the housing assembly above the inlet therein and a valve member on the pop-up sprinkler head assembly in a position to engage the annular valve seat when the sprinkler head assembly is in its retracted storage position. The valve member is mounted on the sprinkler head assembly for biased movement independent of the movement of the sprinkler head assembly and the bias thereof provided by its weight and the return coil spring thereof so that the valve member will be separately moved out of engagement with the annular valve seat to permit passage of water under pressure into the housing assembly in response to the communication of the source of water under pressure with the inlet.
    Type: Grant
    Filed: May 10, 1982
    Date of Patent: February 21, 1984
    Assignee: L. R. Nelson Corporation
    Inventor: Kenneth J. Bruninga
  • 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: 4347981
    Abstract: A turret type sprinkler comprising a base having inlet hose fitting for connection with a hose communicating with a source of water under pressure and a turret assembly mounted on the base for indexed rotational movement about a generally vertical axis. The turret assembly includes upper and lower cooperating annular members fixedly secured in cooperating relation providing a plurality of spray head structures spaced annularly about the axis of indexed rotation thereof. Each of the spray head structures includes a water inlet extending upwardly from a downwardly facing annular surface on the lower annular member in a position to be communicated with a water outlet on the base in one operative position of indexed rotation.
    Type: Grant
    Filed: October 6, 1980
    Date of Patent: September 7, 1982
    Assignee: L. R. Nelson Corporation
    Inventor: Jerry R. Hayes
  • Patent number: 4258882
    Abstract: A two-piece adjustable dial assembly between a link and a water discharge tube of a sprinkler for causing the rotational movement of the water driven shaft of the sprinkler to be transmitted through the link to the water discharge tube in any selected one of a plurality of different oscillatory cycles of movement. The two-piece adjustable dial assembly includes an arm member molded of plastic material having a mounting portion fixedly secured to the water discharge tube and a cylindrical portion having an axis disposed parallel to the oscillatory axis of said water discharge tube, and a dial member molded of plastic material extending through the cylindrical portion of the arm member and rotatable with respect thereto about the axis thereof. The dial member has a knob portion manually engageable to effect rotation of the dial member, a pivotal connection with the other end of the link and an elongated resilient cantilevered latching portion formed integrally with the dial member.
    Type: Grant
    Filed: November 23, 1979
    Date of Patent: March 31, 1981
    Assignee: L. R. Nelson Corporation
    Inventor: Jerry R. Hayes
  • Patent number: 4205788
    Abstract: A step-by-step rotary sprinkler having a combined stream coherency diffuser and distance control baffle member formed of sheet metal to include an arm portion disposed generally vertically having an aperture extending horizontally through one end thereof, a baffle portion bent outwardly at generally right angles from the opposite end of the arm portion and a relatively small diffuser portion bent outwardly at right angles from the free edge of the baffle portion and a manual engaging tab also bent outwardly at right angles from the arm portion, and a pivot assembly extending through the aperture to mount the arm portion on the sprinkler body for pivotal movement into any desired position of adjustment within a predetermined range wherein the radially outermost point of the member is disposed radially inwardly of the radially outermost point of the drive spoon, the positions of adjustment within the range including (1) a diffused only position where the diffuser portion extends into the stream when the drive s
    Type: Grant
    Filed: November 13, 1978
    Date of Patent: June 3, 1980
    Assignee: L. R. Nelson Corporation
    Inventor: Kenneth J. Bruninga
  • Patent number: 4205787
    Abstract: A step-by-step rotary sprinkler head having an impact arm with a drive spoon thereon. The drive spoon is preferably of the anti-backsplash type and includes a pull-in reactant surface and a drive-out reactant surface spaced radially and laterally outwardly of the pull-in reactant surface. The pull-in reactant surface has a slot formed in the central portion thereof for enabling a portion of the stream issuing from the sprinkler head outlet to continue its movement into the slot and outwardly therefrom without being deflected onto the drive-out surface when the drive spoon is in stream engagement so that the reactant force established on the drive-out surface is reduced in relation to that which would be established by the deflection of the entire stream thereon.
    Type: Grant
    Filed: October 10, 1978
    Date of Patent: June 3, 1980
    Assignee: L. R. Nelson Corporation
    Inventor: Kenneth J. Bruninga
  • Patent number: 4189099
    Abstract: A sprinkler spray head consisting of three components preferably molded of plastic material, namely, a body member, a cap member and a flow control member. The mounting and sealing of the components is such that several different spray patterns can be obtained by utilizing several different cap member configurations with the same body and flow control members. The operation of the flow control member is such that flow control adjustment can be obtained by a turning movement from a center position in either direction.
    Type: Grant
    Filed: August 2, 1978
    Date of Patent: February 19, 1980
    Assignee: L. R. Nelson Corporation
    Inventor: Kenneth J. Bruninga
  • Patent number: 4164324
    Abstract: A part-circle step-by-step rotary sprinkler head having an improved anti-backsplash drive spoon integrally formed as a part of the impact arm and having a construction related to the longitudinal axis of the outlet when the arm is in its impact limiting position which comprises upper and lower walls in a position to receive the stream therebetween, an initial stream engaging wall extending between the upper and lower walls and a final stream engaging wall extending between the upper and lower walls spaced with respect to the initial stream engaging wall in a position (1) with all portions thereof disposed outwardly of all portions of the initial wall in a transverse direction corresponding to the direction of movement of the spoon away from its impact position, (2) with a longitudinally inward portion thereof disposed in longitudinally lapped relation with a longitudinally outward portion of the initial wall and (3) with a longitudinally outward portion thereof disposed longitudinally outwardly of the longitu
    Type: Grant
    Filed: February 22, 1978
    Date of Patent: August 14, 1979
    Assignee: L. R. Nelson Corporation
    Inventor: Kenneth J. Bruninga
  • Patent number: 4162092
    Abstract: Apparatus for attachment to garden hoses in a wide range of sizes to provide a conventional hose fitting on an end thereof, which consists essentially of a tubular shank member molded of plastic material having exterior ring sections on one end thereof adapted to enter the interior of the hose end and a fitting on the opposite end thereof, a tubular collar member molded of plastic material having an internal threaded section on one end thereof engageable with an exterior threaded section on the shank member and an interior hose engaging flange on the opposite end thereof. A plurality of sizing members of different internal diameter sizes in the form of split rings is provided for engagement in abutting relation to the interior surface of the annular flange of the collar member.
    Type: Grant
    Filed: October 6, 1977
    Date of Patent: July 24, 1979
    Assignee: L. R. Nelson Corporation
    Inventor: Jerry R. Hayes
  • Patent number: 4131234
    Abstract: A sprinkler head comprising an annular sprinkler body of molded plastic having a tubular member of molded plastic snapped into operative fixed relation within the central portion thereof. A flow adjusting screw is threaded within the tubular member and has its head in adjustable flow restricting relation to inlet passages in the sprinkler body. Water flowing through the controlled inlet passages moves upwardly along the interior of an annular wall in the annular body, outwardly along an end wall of a molded plastic spray adjusting member threadedly mounted on the upper end of the tubular member, downwardly between the exterior of the annular wall and the interior of a peripheral wall of the adjusting member and then radially outwardly between cooperating flow pattern defining surfaces on the spray adjusting member and sprinkler body.
    Type: Grant
    Filed: August 12, 1977
    Date of Patent: December 26, 1978
    Assignee: L. R. Nelson Corporation
    Inventor: James R. Pescetto
  • Patent number: 4059229
    Abstract: A traveling sprinkler and guide wheel assembly therefor which minimizes the chances of the sprinkler leaving operative engagement with a hose defining a path of travel for the sprinkler. The sprinkler includes an elongated body with a water distributing assembly, a pair of cleated drive wheels mounted near the rear thereof, and a guide wheel assembly including a split guide wheel mounted for rotation with respect to a horizontal shaft adjacent the front thereof. Each half of the guide wheel includes a number of radially extending portions defined by slots disposed around the circumference thereof having tip portions extending axially outwardly therefrom.
    Type: Grant
    Filed: April 16, 1976
    Date of Patent: November 22, 1977
    Assignee: L. R. Nelson Corporation
    Inventor: James R. Pescetto
  • Patent number: D254802
    Type: Grant
    Filed: October 3, 1977
    Date of Patent: April 22, 1980
    Assignee: L. R. Nelson Corporation
    Inventor: Jerry R. Hayes
  • Patent number: D254863
    Type: Grant
    Filed: October 3, 1977
    Date of Patent: April 29, 1980
    Assignee: L. R. Nelson Corporation
    Inventor: Jerry R. Hayes
  • Patent number: D261414
    Type: Grant
    Filed: March 8, 1979
    Date of Patent: October 20, 1981
    Assignee: L. R. Nelson Corporation
    Inventor: Jerry R. Hayes
  • Patent number: D274453
    Type: Grant
    Filed: October 2, 1981
    Date of Patent: June 26, 1984
    Assignee: L. R. Nelson Corp.
    Inventor: Jerry R. Hayes
  • Patent number: D275316
    Type: Grant
    Filed: October 2, 1981
    Date of Patent: August 28, 1984
    Assignee: L. R. Nelson Corporation
    Inventor: Jerry R. Hayes
  • Patent number: D281996
    Type: Grant
    Filed: April 20, 1984
    Date of Patent: December 31, 1985
    Assignee: L. R. Nelson Corporation
    Inventor: Ronald G. Hayes
  • Patent number: D282866
    Type: Grant
    Filed: April 20, 1984
    Date of Patent: March 4, 1986
    Assignee: L. R. Nelson Corporation
    Inventor: Ronald G. Hayes