Patents by Inventor Roger Graham Gilbertson

Roger Graham Gilbertson 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).

  • FRANGIBLE SHAPE MEMORY ALLOY FIRE SPRINKLER VALVE ACTUATOR
    Publication number: 20150266141
    Abstract: A temperature-activated valve for a conventional fire sprinkler utilizing a hyperelastic single-crystal shape memory alloy is described. The shape-memory element expands as it is heated, forcing a bolt to break, thereby opening the sprinkler valve. The devices described are less susceptible to accidental breakage than conventional actuators, and have fewer moving parts. Transition temperature of the shape memory alloy can be tuned to a narrow range.
    Type: Application
    Filed: March 31, 2014
    Publication date: September 24, 2015
    Inventors: Alfred David JOHNSON, Roger Graham GILBERTSON, Valery MARTYNOV
  • Frangible shape memory alloy fire sprinkler valve actuator
    Patent number: 8684101
    Abstract: A temperature-activated valve for a conventional fire sprinkler utilizing a hyperelastic single-crystal shape memory alloy is described. The shape-memory element expands as it is heated, forcing a bolt to break, thereby opening the sprinkler valve. The devices described are less susceptible to accidental breakage than conventional actuators, and have fewer moving parts. Transition temperature of the shape memory alloy can be tuned to a narrow range.
    Type: Grant
    Filed: January 24, 2008
    Date of Patent: April 1, 2014
    Assignee: TiNi Alloy Company
    Inventors: Alfred David Johnson, Roger Graham Gilbertson, Valery Martynov
  • Sprinkler valve with active actuation
    Patent number: 8584767
    Abstract: A temperature-activated valve for a conventional fire sprinkler utilizing a hyperelastic single-crystal shape memory alloy is described. The shape-memory element expands as it is heated, forcing a bolt to break, thereby opening the sprinkler valve. The shape memory element typically communicates with the valve so as to force it open. The devices described are less susceptible to accidental breakage than conventional actuators, and have fewer moving parts. Transition temperature of the shape memory alloy can be tuned to a narrow range.
    Type: Grant
    Filed: July 15, 2009
    Date of Patent: November 19, 2013
    Assignee: TiNi Alloy Company
    Inventors: Alfred David Johnson, Roger Graham Gilbertson, Valery Martynov
  • SPRINKLER VALVE WITH ACTIVE ACTUATION
    Publication number: 20100006304
    Abstract: A temperature-activated valve for a conventional fire sprinkler utilizing a hyperelastic single-crystal shape memory alloy is described. The shape-memory element expands as it is heated, forcing a bolt to break, thereby opening the sprinkler valve. The shape memory element typically communicates with the valve so as to force it open. The devices described are less susceptible to accidental breakage than conventional actuators, and have fewer moving parts. Transition temperature of the shape memory alloy can be tuned to a narrow range.
    Type: Application
    Filed: July 15, 2009
    Publication date: January 14, 2010
    Inventors: Alfred David Johnson, Roger Graham Gilbertson, Valery Martynov
  • FRANGIBLE SHAPE MEMORY ALLOY FIRE SPRINKLER VALVE ACTUATOR
    Publication number: 20090095493
    Abstract: A temperature-activated valve for a conventional fire sprinkler utilizing a hyperelastic single-crystal shape memory alloy is described. The shape-memory element expands as it is heated, forcing a bolt to break, thereby opening the sprinkler valve. The devices described are less susceptible to accidental breakage than conventional actuators, and have fewer moving parts. Transition temperature of the shape memory alloy can be tuned to a narrow range.
    Type: Application
    Filed: January 24, 2008
    Publication date: April 16, 2009
    Applicant: TiNi Alloy Company
    Inventors: Alfred David Johnson, Roger Graham Gilbertson, Valery Martynov