Patents by Inventor Christopher I. Hall

Christopher I. Hall 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: 6578243
    Abstract: An improved bag clamp and bag cutter is presented that is a non-obvious increase in capability over this inventor's previous bag clamp/cutter invention. The improved clamp possesses a stronger spring, an improved cutting blade with safety guard, a springboard button for pressing the blade firmly against a bag surface, and other improvements.
    Type: Grant
    Filed: June 7, 2002
    Date of Patent: June 17, 2003
    Inventor: Christopher I. Hall
  • Patent number: 6105217
    Abstract: A clamp for closing polymer bags. The clamp includes a pair of clamp members movable between a closed and an opened condition, each one of the clamp members having a jaw for engagement of a bag. Each clamp member has an inner and an outer surface. A hinge attaches the clamp members while biasing the clamp members into a closed configuration. Gripping means are disposed on the inner surface of each one of the clamp members. The gripping means include opposed striations on the inner surface of each clamp member. In addition, a blade having a blunted top surface is disposed on the inner surface of one of the clamp members and an anvil is disposed opposite the blade. When the clamp is in a closed, bag sealing configuration, the blunted blade surface abuts the anvil as the blade and anvil cooperate in securing the bag within the clamp. The blade includes a cutting edge for opening a bag when the clamp is moved across the bag surface.
    Type: Grant
    Filed: May 12, 1999
    Date of Patent: August 22, 2000
    Inventors: James Grant Caradine, Christopher I. Hall
  • Patent number: D476876
    Type: Grant
    Filed: May 30, 2002
    Date of Patent: July 8, 2003
    Inventor: Christopher I. Hall
  • Patent number: RE40756
    Abstract: An improved bag clamp and bag cutter is presented that is a non-obvious increase in capability over this inventor's previous bag clamp/cutter invention. The improved clamp possesses a stronger spring, an improved cutting blade with safety guard, a springboard button for pressing the blade firmly against a bag surface, and other improvements.
    Type: Grant
    Filed: June 7, 2004
    Date of Patent: June 23, 2009
    Inventor: Christopher I. Hall