Patents by Inventor Alan Fortner

Alan Fortner 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).

  • Assembly and method for preventing axial migration of springs in generator rotors
    Patent number: 10749395
    Abstract: An assembly and a method for preventing an axial migration of a spring in a generator rotor are presented. The assembly includes a step pin radially disposed through an amortisseur and inserted into a spring of the generator rotor. The step pin is arranged axially apart from an adjacent radial vent passage and radially extends through the spring into a slot clearance between the spring and a creepage. The amortisseur includes a counter bore to retain a pin head and a pin shoulder. The spring includes a pin hole for a pin body extending therethrough. Diameters of the counter bore and the pin hole are smaller than diameters of amortisseur radial vent aperture and spring radial vent aperture. The step pin prevents an axial migration of the spring in rotor slots.
    Type: Grant
    Filed: April 19, 2018
    Date of Patent: August 18, 2020
    Assignee: SIEMENS ENERGY, INC.
    Inventors: Andrew Adam, Mark Roberts, Grant Hennessey, Alan Fortner, Brent Mazingo, Randy Edward Whitener, Michael D. Garmon
  • ASSEMBLY AND METHOD FOR PREVENTING AXIAL MIGRATION OF SPRINGS IN GENERATOR ROTORS
    Publication number: 20190326791
    Abstract: An assembly and a method for preventing an axial migration of a spring in a generator rotor are presented. The assembly includes a step pin radially disposed through an amortisseur and inserted into a spring of the generator rotor. The step pin is arranged axially apart from an adjacent radial vent passage and radially extends through the spring into a slot clearance between the spring and a creepage. The amortisseur includes a counter bore to retain a pin head and a pin shoulder. The spring includes a pin hole for a pin body extending therethrough. Diameters of the counter bore and the pin hole are smaller than diameters of amortisseur radial vent aperture and spring radial vent aperture. The step pin prevents an axial migration of the spring in rotor slots.
    Type: Application
    Filed: April 19, 2018
    Publication date: October 24, 2019
    Inventors: Andrew Adam, Mark Roberts, Grant Hennessey, Alan Fortner, Brent Mazingo, Randy Edward Whitener, Michael D. Garmon