Patents by Inventor John Renfrew

John Renfrew 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).

  • Patent number: 9974235
    Abstract: A device for harvesting mushrooms from a mushroom bed involves a robotic arm configured to interchangeably deploy one of a plurality of different suction grippers, each of the suction grippers having a suction cup having a size and shape profile appropriate for gripping a cap of a mushroom, the cap having a size and shape profile within a predetermined range. A vacuum source in fluid communication with the suction gripper supplies negative air pressure to the suction gripper for retaining a cap of the mushroom to be harvested in the suction cup. A control circuit in electronic communication with the suction gripper and the vacuum source is configured to automatically adjust the negative air pressure in the suction gripper in response to harvesting requirements during a mushroom harvesting process.
    Type: Grant
    Filed: August 20, 2015
    Date of Patent: May 22, 2018
    Inventors: John Van De Vegte, John Renfrew, Matthew Jandrisits, Robert Lau
  • Publication number: 20170265392
    Abstract: A device for harvesting mushrooms from a mushroom bed involves a robotic aim configured to interchangeably deploy one of a plurality of different suction grippers, each of the suction grippers having a suction cup having a size and shape profile appropriate for gripping a cap of a mushroom, the cap having a size and shape profile within a predetermined range. A vacuum source in fluid communication with the suction gripper supplies negative air pressure to the suction gripper for retaining a cap of the mushroom to be harvested in the suction cup. A control circuit in electronic communication with the suction gripper and the vacuum source is configured to automatically adjust the negative air pressure in the suction gripper in response to harvesting requirements during a mushroom harvesting process.
    Type: Application
    Filed: August 20, 2015
    Publication date: September 21, 2017
    Inventors: John VAN DE VEGTE, John RENFREW, Matthew JANDRISITS, Robert LAU
  • Patent number: 9730394
    Abstract: A method and system for controlling harvesting of mushrooms from a bed during a mushroom graze harvest operation account for both mushroom separation and stagger, thereby providing for automatic and proper selection of which mushrooms in the bed are to be harvested in a given shift.
    Type: Grant
    Filed: April 17, 2015
    Date of Patent: August 15, 2017
    Assignee: Vineland Research and Innovations Centre Inc.
    Inventors: John Van De Vegte, Michael Lawson, John Renfrew, Koshy Mathew
  • Publication number: 20170042095
    Abstract: A method and system for controlling harvesting of mushrooms from a bed during a mushroom graze harvest operation account for both mushroom separation and stagger, thereby providing for automatic and proper selection of which mushrooms in the bed are to be harvested in a given shift.
    Type: Application
    Filed: April 17, 2015
    Publication date: February 16, 2017
    Applicant: Vineland Research and Innovations Centre Inc.
    Inventors: John Van De Vegte, Michael Lawson, John Renfrew, Koshy Mathew
  • Patent number: 5897842
    Abstract: An apparatus and method for thermally cycling a reaction mixture in a reaction vessel to expose the mixture to the varying temperatures necessary to, for example, achieve PCR amplification or the preparation of sequencing fragments using a cycle sequencing operation makes use of flow-through reaction vessels, such as capillary tubes, for the preparation and thermal cycling of reaction mixtures. In order to prevent loss of the reaction mixture from the vessels during heating, the thermal cycling apparatus of the invention provides means for sealing the proximal and distal end of each reaction vessel. The proximal ends can be sealed by coupling to a pump which permits movement of the samples within the reaction vessels.
    Type: Grant
    Filed: August 27, 1996
    Date of Patent: April 27, 1999
    Assignee: Visible Genetics Inc.
    Inventors: James M. Dunn, James Leushner, John Renfrew, Paul Waterhouse, Alexandre M. Izmailov, Henryk Zaleski