Patents Assigned to L. R. Nelson
  • Patent number: 5748466
    Abstract: An adaptable controller for controlling variable numbers of switches is disclosed. Specifically the controller is useful in an irrigation system having a number of water sprinklers whose operation may be controlled by user-defined programs. The system has a processor unit, an interface unit and a number of add-on units. Switches for actuating electrically-operated devices such as sprinklers are located on the interface unit and the add-on units. The controller allows a user to enter operating parameters relating to the switches in the form of the user-defined programs. The processor is capable of ascertaining the number of switches on the interface unit and the add-on units and limiting the number of switches selected and controlled by the user-defined programs.
    Type: Grant
    Filed: September 8, 1995
    Date of Patent: May 5, 1998
    Assignee: L. R. Nelson
    Inventors: Patrick T. McGivern, Bradley S. King, Steven Graham
  • Patent number: 5645218
    Abstract: Unitized sprinkler assembly including a housing assembly having an inlet end constructed and arranged to be connected with a source of water under pressure and a spaced outlet end, a manually adjustable control mechanism carried by the housing assembly, a sprinkler head assembly having an inlet end disposed to receive water under pressure flowing from the outlet end of the housing assembly, a base assembly constructed and arranged to support the assemblies on a ground area to be sprinkled, a structural connection between the sprinkler head assembly and the housing assembly constructed and arranged to enable the sprinkler head assembly to oscillate about an oscillatory axis with respect to the housing assembly, an oscillating mechanism mounted in the housing assembly constructed and arranged to be operated by the flow of water under pressure and connected with the sprinkler head assembly to oscillate the sprinkler head assembly about the oscillatory axis through repeated oscillating head cycles, an adjusting m
    Type: Grant
    Filed: May 26, 1995
    Date of Patent: July 8, 1997
    Assignee: L. R. Nelson Corporation
    Inventors: Lawrence P. Heren, Jerry R. Hayes, Thomas R. Kruer
  • Patent number: 5511727
    Abstract: A wave sprinkler assembly in which the tubular spray assembly comprises a tubular member and one or more elongated strips of flexible material having a series of longitudinally spaced water stream outlets extending therethrough, the strips are assembled with the tubular member by inserting them therein through an end and moving them radially outwardly into an operative position wherein the water under pressure within the interior of the tubular spray assembly acts on the strips to enhance their engagement with the tubular member. The strip provides an annular seal of flexible sealing material extending around the exterior of each of the controllable water stream outlets, and a control member is mounted on the elongated tubular assembly for movement between a full width operating position and a width limiting position. The control member includes a control section associated with each annular seal and the controllable water stream outlet around which it extends.
    Type: Grant
    Filed: June 1, 1994
    Date of Patent: April 30, 1996
    Assignee: L. R. Nelson Corporation
    Inventors: Lawrence P. Heren, Jerry R. Hayes, Thomas R. Kruer
  • Patent number: 5368229
    Abstract: A pop-up sprinkler assembly for installation within the ground and for manual connection from a position above ground with an above ground hose as a source of water pressure. The pop-up sprinkler assembly includes a housing structure having an annular opening and exterior suitable for installation within the ground in a fixed operative position. The housing structure has a inlet passageway communicating with the annular opening. A hose connector is in the passageway for connection to an above ground hose. A sprinkler head is mounted in the annular space that is generally at ground level when the sprinkler head is in a lower storage position. An annular seal is provided between the sprinkler head and the housing structure so that the communication of water pressure with the annular space results in water pressure-biased movement of the sprinkler head from the lower storage position to a raised operative position.
    Type: Grant
    Filed: June 17, 1993
    Date of Patent: November 29, 1994
    Assignee: L. R. Nelson Corporation
    Inventors: Jerry R. Hayes, Lawrence P. Heren
  • Patent number: 5292071
    Abstract: The lawn sprinkler device comprises a manually operative combination of a container, sprinkler head and lid components. The container and lid are manually movable between a closed position defining a closed volume in the container and an open position that provides access to the closed volume. The container and lid are mounted within the ground so that the closed volume extends downwardly from the level of the lawn area and in the open position access to the closed volume is available generally at the level of the lawn area. The sprinkler head component includes a hose coupling inlet for manual connection by a user with an above-ground hose and an outlet structure for discharging water under pressure in a desired pattern on the lawn area. The sprinkler head is mounted with respect to the container and lid for manual movement between a storage position within the closed volume of the container and an operative position which is in elevated relation to the closed volume.
    Type: Grant
    Filed: June 17, 1993
    Date of Patent: March 8, 1994
    Assignee: L. R. Nelson Corporation
    Inventor: Thomas R. Kruer
  • Patent number: D325620
    Type: Grant
    Filed: September 7, 1989
    Date of Patent: April 21, 1992
    Assignee: L. R. Nelson Corporation
    Inventor: Lawrence P. Heren
  • Patent number: D325775
    Type: Grant
    Filed: October 19, 1989
    Date of Patent: April 28, 1992
    Assignee: L. R. Nelson Corporation
    Inventor: Ronald G. Hayes
  • Patent number: D325961
    Type: Grant
    Filed: October 19, 1989
    Date of Patent: May 5, 1992
    Assignee: L. R. Nelson Corporation
    Inventor: Ronald G. Hayes
  • Patent number: D327314
    Type: Grant
    Filed: October 19, 1989
    Date of Patent: June 23, 1992
    Assignee: L. R. Nelson Corporation
    Inventor: Ronald G. Hayes
  • Patent number: D349152
    Type: Grant
    Filed: July 1, 1993
    Date of Patent: July 26, 1994
    Assignee: L. R. Nelson Corporation
    Inventor: Ronald G. Hayes
  • Patent number: D361122
    Type: Grant
    Filed: May 12, 1994
    Date of Patent: August 8, 1995
    Assignee: L. R. Nelson Corporation
    Inventor: John W. Goodin
  • Patent number: D383193
    Type: Grant
    Filed: May 26, 1995
    Date of Patent: September 2, 1997
    Assignee: L. R. Nelson Corporation
    Inventors: Lawrence P. Heren, Thomas R. Kruer, Ronald G. Hayes
  • Patent number: D399919
    Type: Grant
    Filed: December 15, 1995
    Date of Patent: October 20, 1998
    Assignee: L. R. Nelson Corporation
    Inventor: John W. Goodin
  • Patent number: D401670
    Type: Grant
    Filed: February 12, 1998
    Date of Patent: November 24, 1998
    Assignee: L. R. Nelson
    Inventor: John W. Goodin
  • Patent number: D402000
    Type: Grant
    Filed: February 12, 1998
    Date of Patent: December 1, 1998
    Assignee: L. R. Nelson
    Inventor: John W. Goodin
  • Patent number: D409717
    Type: Grant
    Filed: April 27, 1998
    Date of Patent: May 11, 1999
    Assignee: L. R. Nelson Corporation
    Inventors: Lawrence P. Heren, Thomas R. Kruer, David L. Hunt
  • Patent number: D410078
    Type: Grant
    Filed: August 14, 1998
    Date of Patent: May 18, 1999
    Assignee: L. R. Nelson
    Inventors: Vincent R. Doubet, George William Gassman
  • Patent number: D412549
    Type: Grant
    Filed: August 7, 1998
    Date of Patent: August 3, 1999
    Assignee: L. R. Nelson
    Inventors: Gary Redhead, Thomas R. Kruer, Kenneth J. Bruninga
  • Patent number: D418576
    Type: Grant
    Filed: August 14, 1998
    Date of Patent: January 4, 2000
    Assignee: L. R. Nelson Corporation
    Inventors: Lawrence P. Heren, David Hunt
  • Patent number: D422052
    Type: Grant
    Filed: April 15, 1999
    Date of Patent: March 28, 2000
    Assignee: L. R. Nelson
    Inventor: Lawrence P. Heren