Patents by Inventor Nathan D. Donovan

Nathan D. Donovan 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).

  • Pump having wear and wear rate detection
    Patent number: 9671065
    Abstract: Apparatus and method for supplying lubricant to a plurality of lubrication sites. The apparatus includes a controller that diagnoses piston wear by driving the pump to achieve a predetermined pressure, stopping the pump with the piston in a home position, and measuring pressure at a preselected time interval after the step of stopping the pump. The amount of piston wear is approximated based on a difference between the predetermined pressure and the measured pressure at the predetermined time interval.
    Type: Grant
    Filed: October 17, 2013
    Date of Patent: June 6, 2017
    Assignee: Lincoln Industrial Corporation
    Inventors: Paul G. Conley, Nathan D. Donovan
  • Pump having stepper motor and overdrive control
    Patent number: 9022177
    Abstract: Apparatus and method for supplying lubricant to a plurality of lubrication sites. Embodiments include a pump with venting and non-venting piston return, a pump with stirrer and direct feed mechanism, a pump with CAN system and self-diagnostics, a pump with heated housing and reservoir and a pump with stepper motor and overdrive control.
    Type: Grant
    Filed: October 12, 2011
    Date of Patent: May 5, 2015
    Assignee: Lincoln Industrial Corporation
    Inventors: Paul G. Conley, David C. Beck, Nathan D. Donovan
  • PUMP HAVING WEAR AND WEAR RATE DETECTION
    Publication number: 20150107329
    Abstract: Apparatus and method for supplying lubricant to a plurality of lubrication sites. The apparatus includes a controller that diagnoses piston wear by driving the pump to achieve a predetermined pressure, stopping the pump with the piston in a home position, and measuring pressure at a preselected time interval after the step of stopping the pump. The amount of piston wear is approximated based on a difference between the predetermined pressure and the measured pressure at the predetermined time interval.
    Type: Application
    Filed: October 17, 2013
    Publication date: April 23, 2015
    Applicant: Lincoln Industrial Corporation
    Inventors: Paul G. Conley, Nathan D. Donovan
  • PUMP HAVING STEPPER MOTOR AND OVERDRIVE CONTROL
    Publication number: 20120132483
    Abstract: Apparatus and method for supplying lubricant to a plurality of lubrication sites. Embodiments include a pump with venting and non-venting piston return, a pump with stirrer and direct feed mechanism, a pump with CAN system and self-diagnostics, a pump with heated housing and reservoir and a pump with stepper motor and overdrive control.
    Type: Application
    Filed: October 12, 2011
    Publication date: May 31, 2012
    Applicant: LINCOLN INDUSTRIAL CORPORATION
    Inventors: Paul G. Conley, David C. Beck, Nathan D. Donovan