Patents by Inventor Ken MayField

Ken MayField 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: 11298280
    Abstract: A wheelchair incorporated with a lift apparatus is disclosed. The wheelchair comprises a pair of seat frame support bars, backrest support bars, and armrest frame support bars for supporting at least one seat cushion, backrest cushion, and armrest cushions. The wheelchair further comprises lower support bars positioned parallel and opposite each other on both sides of the wheelchair. The support assembly includes a plurality of scissor links pivotally connected to each other, and an end of the plurality of scissor links is pivotally affixed with needle bearings to the lower support bars and the seat frame support bars. The lift apparatus includes one or more actuators, positioned between the lower support bars and at least one scissor link on both sides. The actuators are configured to raise and lower the seat cushion by raising at least one scissor link, thereby raising and lowering the seat cushion to a desired adjustable height for the user.
    Type: Grant
    Filed: March 25, 2019
    Date of Patent: April 12, 2022
    Inventor: Ken MayField
  • Publication number: 20200306113
    Abstract: A wheelchair incorporated with a lift apparatus is disclosed. The wheelchair comprises a pair of seat frame support bars, backrest support bars, and armrest frame support bars for supporting at least one seat cushion, backrest cushion, and armrest cushions. The wheelchair further comprises lower support bars positioned parallel and opposite each other on both sides of the wheelchair. The support assembly includes a plurality of scissor links pivotally connected to each other, and an end of the plurality of scissor links is pivotally affixed with needle bearings to the lower support bars and the seat frame support bars. The lift apparatus includes one or more actuators, positioned between the lower support bars and at least one scissor link on both sides. The actuators are configured to raise and lower the seat cushion by raising at least one scissor link, thereby raising and lowering the seat cushion to a desired adjustable height for the user.
    Type: Application
    Filed: March 25, 2019
    Publication date: October 1, 2020
    Inventor: Ken MayField