Patents by Inventor John A. Hammar

John A. Hammar 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).

  • Blade clutch actuator (BCA) with overload slip clutch
    Patent number: 10548263
    Abstract: An improved electromechanical Blade Clutch Actuator (BCA) that employs an electric gear motor system to provide more economical, convenient and reliable user control with an electric switch to engage/disengage the cutting blades. The user control may be a switch remotely mounted anywhere on the mower for greater design freedom due to the removal of the manual interface. The BCA also incorporates a novel slip clutch for overload protection.
    Type: Grant
    Filed: December 6, 2017
    Date of Patent: February 4, 2020
    Assignee: McCormick Technical Consulting, LLC
    Inventors: John A. Hammar, Gary M. Marcy, Garrett P. McCormick
  • BLADE CLUTCH ACTUATOR (BCA) WITH OVERLOAD SLIP CLUTCH
    Publication number: 20180160621
    Abstract: An improved electromechanical Blade Clutch Actuator (BCA) that employs an electric gear motor system to provide more economical, convenient and reliable user control with an electric switch to engage/disengage the cutting blades. The user control may be a switch remotely mounted anywhere on the mower for greater design freedom due to the removal of the manual interface. The BCA also incorporates a novel slip clutch for overload protection.
    Type: Application
    Filed: December 6, 2017
    Publication date: June 14, 2018
    Inventors: John A. Hammar, Gary M. Marcy, Garrett P. McCormick