Patents by Inventor Alfred M. Potvin

Alfred M. Potvin 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: 4365531
    Abstract: A miter box comprising a base having a flat top surface and opposed parallel elongated side edges. A pair of spaced apart side walls extend from at least one of the side edges transversely above the flat top surface. The side walls have a flat inner surface to form right angle walls with the flat top surface. A saw blade guide mechanism is provided between the pairs of side walls. The mechanism comprises an arcuate guide means adjacent each of the side edges intermediate the pair of side walls and disposed on a circular axis having a common center point. The guide means have a diametrical pivotal base member pivotally secured on the center point below the flat top surface. Support guide means is secured to the pivotal base member and extends transversely above the flat top surface and displaceable along an arcuate path between each pair of side walls.
    Type: Grant
    Filed: November 10, 1980
    Date of Patent: December 28, 1982
    Assignee: Mita Wood Products Inc.
    Inventor: Alfred M. Potvin
  • Patent number: 4300755
    Abstract: A miter box comprising a rectangular bottom wall having a flat top surface. Opposed vertical side walls extend from opposite longitudinal end edges of the bottom wall and are provided with the usual angular and transverse slots. Improvement consists in the provision of clamps which are displaceable between the vertical side walls to apply clamping pressure against the workpiece lying on the top surface of the bottom wall to clamp the workpiece against one of the side walls to keep it in place when making a miter cut.
    Type: Grant
    Filed: November 5, 1979
    Date of Patent: November 17, 1981
    Inventor: Alfred M. Potvin
  • Patent number: 3938431
    Abstract: An electric grill appliance comprising a main body having a bottom wall, opposed side walls and a top plate of heat conductive material. The top plate has an outer cooking surface and an undersurface facing the bottom wall. At least one resistive heating element is secured directly to the undersurface for heating the top plate. The body is supported above the horizontal plane by support means. A container is removably secured under the bottom wall and has liquid collecting means extending outside one or more of the opposed side walls. The top plate has liquid dispensing means in at least one outside edge thereof to direct liquid on the top plate outer cooking surface into the liquid collecting flange of the container.
    Type: Grant
    Filed: December 6, 1974
    Date of Patent: February 17, 1976
    Inventor: Alfred M. Potvin