Patents by Inventor Christopher A. Johnston

Christopher A. Johnston 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).

  • Publication number: 20220389689
    Abstract: Wear caps protect the wearable surfaces of an adapter for an earth working equipment. These wear caps are subjected to erosion and wear by contact with abrasive material, such as experienced in an excavating operation. The wear caps can be attached to upper and lower legs of the adapter and protect them from wear. Each wear cap is secured to a retention feature on an independent mounting structure. The independent mounting structures are aligned and staggered such that installation of a wear cap onto the rearward independent mounting structure is conducted first. The independent mounting structures on an upper leg may be situated one above the other.
    Type: Application
    Filed: August 11, 2022
    Publication date: December 8, 2022
    Applicant: ESCO Group LLLC
    Inventors: Abram Hernandez, Yesenia Meraz-Torres, Christopher A. Johnston
  • Publication number: 20220325505
    Abstract: A wear member for attaching to a digging edge of a bucket includes a front end and bifurcated legs extending rearwardly from the front end. Each leg includes an inner surface to face the digging edge, a rear wall, and a lock opening to receive a lock therethrough. At least one of the bifurcated legs includes a front portion, a rear portion, and a coupling feature. The rear portion defines a stabilizing region comprising a front facing lateral wall forward of the rear wall.
    Type: Application
    Filed: April 11, 2022
    Publication date: October 13, 2022
    Applicant: ESCO Group LLC
    Inventors: Christopher A. Johnston, Scott H. Zenier, Joel S. Hankland, Bruce C. Bingham, Charles G. Ollinger, IV, Kevin S. Stangeland, Zachary R. Englen
  • Patent number: 11447937
    Abstract: Wear caps protect the wearable surfaces of an adapter for an earth working equipment. These wear caps are subjected to erosion and wear by contact with abrasive material, such as experienced in an excavating operation. The wear caps can be attached to upper and lower legs of the adapter and protect them from wear. Each wear cap is secured to a retention feature on an independent mounting structure. The independent mounting structures are aligned and staggered such that installation of a wear cap onto the rearward independent mounting structure is conducted first. The independent mounting structures on an upper leg may be situated one above the other.
    Type: Grant
    Filed: February 7, 2020
    Date of Patent: September 20, 2022
    Assignee: ESCO GROUP LLC
    Inventors: Abram Hernandez, Yesenia Meraz-Torres, Christopher A. Johnston
  • Patent number: 11155982
    Abstract: Wear members for wear assemblies include a lock configured to secure the wear member to a base, where the lock has two engagement positions, namely: (a) a first position that secures the lock to the wear member, and (b) a second position that secures the wear member to the base. The locks are further configured to be unlatched and removed from the wear member in two phases, a first retraction of the latching mechanism, followed by a rotation of the lock itself with removal from the wear member.
    Type: Grant
    Filed: April 14, 2020
    Date of Patent: October 26, 2021
    Assignee: ESCO GROUP LLC
    Inventors: Christopher A. Johnston, Donald M. Conklin, Michael B. Roska, William D. Rossi, Kevin S. Stangeland
  • Publication number: 20200256040
    Abstract: Wear caps protect the wearable surfaces of an adapter for an earth working equipment. These wear caps are subjected to erosion and wear by contact with abrasive material, such as experienced in an excavating operation. The wear caps can be attached to upper and lower legs of the adapter and protect them from wear. Each wear cap is secured to a retention feature on an independent mounting structure. The independent mounting structures are aligned and staggered such that installation of a wear cap onto the rearward independent mounting structure is conducted first. The independent mounting structures on an upper leg may be situated one above the other.
    Type: Application
    Filed: February 7, 2020
    Publication date: August 13, 2020
    Applicant: ESCO Group LLC
    Inventors: Abram Hernandez, Yesenia Meraz-Torres, Christopher A. Johnston
  • Publication number: 20200240120
    Abstract: Wear members for wear assemblies include a lock configured to secure the wear member to a base, where the lock has two engagement positions, namely: (a) a first position that secures the lock to the wear member, and (b) a second position that secures the wear member to the base. The locks are further configured to be unlatched and removed from the wear member in two phases, a first retraction of the latching mechanism, followed by a rotation of the lock itself with removal from the wear member.
    Type: Application
    Filed: April 14, 2020
    Publication date: July 30, 2020
    Inventors: Christopher A. Johnston, Donald M. Conklin, Michael B. Roska, William D. Rossi, Kevin S. Stangeland
  • Patent number: 10655307
    Abstract: Wear members for wear assemblies include a lock configured to secure the wear member to a base, where the lock has two engagement positions, namely: (a) a first position that secures the lock to the wear member, and (b) a second position that secures the wear member to the base. The locks are further configured to be unlatched and removed from the wear member in two phases, a first retraction of the latching mechanism, followed by a rotation of the lock itself with removal from the wear member.
    Type: Grant
    Filed: January 23, 2018
    Date of Patent: May 19, 2020
    Assignee: ECSO Group LLC
    Inventors: Christopher A. Johnston, Donald M. Conklin, Michael B. Roska, William D. Rossi, Kevin S. Stangeland
  • Patent number: 10024036
    Abstract: Wear members for wear assemblies include a lock configured to secure the wear member to a base, where the lock has two engagement positions, namely: (a) a first position that secures the lock to the wear member, and (b) a second position that secures the wear member to the base. The locks are further configured to be unlatched and removed from the wear member in two phases, a first retraction of the latching mechanism, followed by a rotation of the lock itself with removal from the wear member.
    Type: Grant
    Filed: March 24, 2016
    Date of Patent: July 17, 2018
    Assignee: ESCO CORPORATION
    Inventors: Christopher A. Johnston, Donald M. Conklin, Michael B. Roska, William D. Rossi, Kevin S. Stangeland
  • Publication number: 20180148908
    Abstract: Wear members for wear assemblies include a lock configured to secure the wear member to a base, where the lock has two engagement positions, namely: (a) a first position that secures the lock to the wear member, and (b) a second position that secures the wear member to the base. The locks are further configured to be unlatched and removed from the wear member in two phases, a first retraction of the latching mechanism, followed by a rotation of the lock itself with removal from the wear member.
    Type: Application
    Filed: January 23, 2018
    Publication date: May 31, 2018
    Inventors: Christopher A. Johnston, Donald M. Conklin, Michael B. Roska, William D. Rossi, Kevin S. Stangeland
  • Publication number: 20160201299
    Abstract: Wear members for wear assemblies include a lock configured to secure the wear member to a base, where the lock has two engagement positions, namely: (a) a first position that secures the lock to the wear member, and (b) a second position that secures the wear member to the base. The locks are further configured to be unlatched and removed from the wear member in two phases, a first retraction of the latching mechanism, followed by a rotation of the lock itself with removal from the wear member.
    Type: Application
    Filed: March 24, 2016
    Publication date: July 14, 2016
    Inventors: Christopher A. Johnston, Donald M. Conklin, Michael B. Roska, William D. Rossi, Kevin S. Stangeland
  • Patent number: 9322150
    Abstract: Wear members for wear assemblies include a lock configured to secure the wear member to a base, where the lock has two engagement positions, namely: (a) a first position that secures the lock to the wear member, and (b) a second position that secures the wear member to the base. The locks are further configured to be unlatched and removed from the wear member in two phases, a first retraction of the latching mechanism, followed by a rotation of the lock itself with removal from the wear member.
    Type: Grant
    Filed: April 10, 2014
    Date of Patent: April 26, 2016
    Assignee: ESCO CORPORATION
    Inventors: Christopher A. Johnston, Donald M. Conklin, Michael B. Roska, William D. Rossi, Kevin S. Stangeland
  • Publication number: 20140215868
    Abstract: Wear members for wear assemblies include a lock configured to secure the wear member to a base, where the lock has two engagement positions, namely: (a) a first position that secures the lock to the wear member, and (b) a second position that secures the wear member to the base. The locks are further configured to be unlatched and removed from the wear member in two phases, a first retraction of the latching mechanism, followed by a rotation of the lock itself with removal from the wear member.
    Type: Application
    Filed: April 10, 2014
    Publication date: August 7, 2014
    Applicant: ESCO CORPORATION
    Inventors: Christopher A. Johnston, Donald M. Conklin, Michael B. Roska, William D. Rossi, Kevin S. Stangeland