Patents by Inventor Roger Lee Larson

Roger Lee Larson has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Methods and Apparatus for Aerating Turf
    Publication number: 20240099173
    Abstract: Tine assemblies (100a, 100b, 104) are secured by a single bolt (126) extending diametrically through each tine (120) located in a cavity (112) of a tine plate (110). An outer tine assembly (104) is connected to a sleeve (116) rotatably mounted on independently rotatable shafts (102) to which inner tine assemblies (100a, 100b) are connected. A tine cover (50) removably closes an opening (40) in the top plate (28) and in which weights (70) are removably received over the tine assemblies (100a, 100b, 104). Transport wheels (134) are moveable by pivoting a stop plate (140) to position an upper pivot axis (150a) of an abutment bar (150) ahead of or behind the stop axis (142) and lower pivot axis (150b). A stop (146) positioned on the stop plate (140) without the use of tools adjusts the depth of the tine assemblies (100a, 100b, 104).
    Type: Application
    Filed: December 4, 2023
    Publication date: March 28, 2024
    Inventors: George Kinkead, Steven Ferguson, Terrence R. Bondeson, Tom Fiske, Roger Lee Larson
  • Driven and non-driven rotatable tine assemblies for a turf aerator
    Patent number: 11832541
    Abstract: Tines (120) of tine assemblies (100a, 100b, 104) are secured by a single bolt (126) extending diametrically through each tine (120) located in a cavity (112) of a tine plate (110), through the tine plate (110) and through an attachment ring (130). The attachment ring (130) of an outer tine assembly (104) is connected to a sleeve (116) rotatably mounted adjacent the outer ends on each of two independently rotatable shafts (102) to which inner tine assemblies (100a, 100b) are rotatably connected adjacent the inner ends of the two independently rotatable shafts (102). The attachment rings (130) of the inner tine assemblies (100a, 100b) are welded to the two independently rotatable shafts (102).
    Type: Grant
    Filed: March 22, 2021
    Date of Patent: December 5, 2023
    Assignee: TURFCO MANUFACTURING, INC.
    Inventors: George Kinkead, Steven Ferguson, Terrence R. Bondeson, Tom Fiske, Roger Lee Larson
  • Turf Aerator Having Driven and Non-Driven Rotatable Tine Assemblies
    Publication number: 20210204461
    Abstract: Tines (120) of tine assemblies (100a, 100b, 104) are secured by a single bolt (126) extending diametrically through each tine (120) located in a cavity (112) of a tine plate (110). An outer tine assembly (104) is connected to a sleeve (116) rotatably mounted adjacent the outer ends on each of two independently rotatable shafts (102) to which inner tine assemblies (100a, 100b) are rotatably connected adjacent the inner ends of the two independently rotatable shafts (102). Thus, the outer tine assemblies (104) are located intermediate the inner tine assemblies (100a, 100b) and the outer ends of the two independently rotatable shafts (102).
    Type: Application
    Filed: March 22, 2021
    Publication date: July 8, 2021
    Inventors: George Kinkead, Steven Ferguson, Terrence R. Bondeson, Tom Fiske, Roger Lee Larson
  • Turf aerator having driven and non-driven rotatable tine assemblies
    Patent number: 10952363
    Abstract: Tines (120) of tine assemblies (100a, 100b, 104) are secured by a single bolt (126) extending diametrically through each tine (120) located in a cavity (112) of a tine plate (110). An outer tine assembly (104) is connected to a sleeve (116) rotatably mounted adjacent the outer ends on each of two independently rotatable shafts (102) to which inner tine assemblies (100a, 100b) are rotatably connected adjacent the inner ends of the two independently rotatable shafts (102). Thus, the outer tine assemblies (104) are located intermediate the inner tine assemblies (100a, 100b) and the outer ends of the two independently rotatable shafts (102).
    Type: Grant
    Filed: February 25, 2019
    Date of Patent: March 23, 2021
    Assignee: Turfco Manufacturing, Inc.
    Inventors: George Kinkead, Steven Ferguson, Terrence R Bondeson, Tom Fiske, Roger Lee Larson
  • Turf Aerator Having Removable Cover Over Rotatable Tines
    Publication number: 20190183028
    Abstract: Tine assemblies (100a, 100b, 104) are secured by a single bolt (126) extending diametrically through each tine (120) located in a cavity (112) of a tine plate (110). An outer tine assembly (104) is connected to a sleeve (116) rotatably mounted on independently rotatable shafts (102) to which inner tine assemblies (100a, 100b) are connected. A tine cover (50) removably closes an opening (40) in the top plate (28) and in which weights (70) are removably received over the tine assemblies (100a, 100b, 104). Transport wheels (134) are moveable by pivoting a stop plate (140) to position an upper pivot axis (150a) of an abutment bar (150) ahead of or behind the stop axis (142) and lower pivot axis (150b). A stop (146) positioned on the stop plate (140) without the use of tools adjusts the depth of the tine assemblies (100a, 100b, 104).
    Type: Application
    Filed: February 25, 2019
    Publication date: June 20, 2019
    Inventors: George Kinkead, Steven Ferguson, Terrence R. Bondeson, Tom Fiske, Roger Lee Larson
  • Turf aerator having removable cover over rotatable tines
    Patent number: 10212872
    Abstract: Tine assemblies (100a, 100b, 104) are secured by a single bolt (126) extending diametrically through each tine (120) located in a cavity (112) of a tine plate (110). An outer tine assembly (104) is connected to a sleeve (116) rotatably mounted on independently rotatable shafts (102) to which inner tine assemblies (100a, 100b) are connected. A tine cover (50) removably closes an opening (40) in the top plate (28) and in which weights (70) are removably received over the tine assemblies (100a, 100b, 104). Transport wheels (134) are moveable by pivoting a stop plate (140) to position an upper pivot axis (150a) of an abutment bar (150) ahead of or behind the stop axis (142) and lower pivot axis (150b). A stop (146) positioned on the stop plate (140) without the use of tools adjusts the depth of the tine assemblies (100a, 100b, 104).
    Type: Grant
    Filed: October 24, 2016
    Date of Patent: February 26, 2019
    Assignee: Turfco Manufacturing, Inc.
    Inventors: George Kinkead, Steven Ferguson, Terrence R Bondeson, Tom Fiske, Roger Lee Larson
  • Methods and Apparatus for Aerating Turf
    Publication number: 20170034987
    Abstract: Tine assemblies (100a, 100b, 104) are secured by a single bolt (126) extending diametrically through each tine (120) located in a cavity (112) of a tine plate (110). An outer tine assembly (104) is connected to a sleeve (116) rotatably mounted on independently rotatable shafts (102) to which inner tine assemblies (100a, 100b) are connected. A tine cover (50) removably closes an opening (40) in the top plate (28) and in which weights (70) are removably received over the tine assemblies (100a, 100b, 104). Transport wheels (134) are moveable by pivoting a stop plate (140) to position an upper pivot axis (150a) of an abutment bar (150) ahead of or behind the stop axis (142) and lower pivot axis (150b). A stop (146) positioned on the stop plate (140) without the use of tools adjusts the depth of the tine assemblies (100a, 100b, 104).
    Type: Application
    Filed: October 24, 2016
    Publication date: February 9, 2017
    Inventors: George Kinkead, Steven Ferguson, Terrence R. Bondeson, Tom Fiske, Roger Lee Larson
  • Apparatus for aerating turf including positionable transport wheels
    Patent number: 9474196
    Abstract: Tine assemblies (100a, 100b, 104) are secured by a single bolt (126) extending diametrically through each tine (120) located in a cavity (112) of a tine plate (110). An outer tine assembly (104) is connected to a sleeve (116) rotatably mounted on independently rotatable shafts (102) to which inner tine assemblies (100a, 100b) are connected. A tine cover (50) removably closes an opening (40) in the top plate (28) and in which weights (70) are removably received over the tine assemblies (100a, 100b, 104). Transport wheels (134) are moveable by pivoting a stop plate (140) to position an upper pivot axis (150a) of an abutment bar (150) ahead of or behind the stop axis (142) and lower pivot axis (150b). A stop (146) positioned on the stop plate (140) without the use of tools adjusts the depth of the tine assemblies (100a, 100b, 104).
    Type: Grant
    Filed: October 26, 2011
    Date of Patent: October 25, 2016
    Assignee: Turfco Manufacturing, Inc.
    Inventors: George Kinkead, Steven Ferguson, Terrence R. Bondeson, Tom Fiske, Roger Lee Larson
  • Methods and Apparatus for aerating Turf
    Publication number: 20120103641
    Abstract: Tine assemblies (100a, 100b, 104) are secured by a single bolt (126) extending diametrically through each tine (120) located in a cavity (112) of a tine plate (110). An outer tine assembly (104) is connected to a sleeve (116) rotatably mounted on independently rotatable shafts (102) to which inner tine assemblies (100a, 100b) are connected. A tine cover (50) removably closes an opening (40) in the top plate (28) and in which weights (70) are removably received over the tine assemblies (100a, 100b, 104). Transport wheels (134) are moveable by pivoting a stop plate (140) to position an upper pivot axis (150a) of an abutment bar (150) ahead of or behind the stop axis (142) and lower pivot axis (150b). A stop (146) positioned on the stop plate (140) without the use of tools adjusts the depth of the tine assemblies (100a, 100b, 104).
    Type: Application
    Filed: October 26, 2011
    Publication date: May 3, 2012
    Inventors: George Kinkead, Steven Ferguson, Terrence R. Bondeson, Tom Fiske, Roger Lee Larson