Patents by Inventor Karl Hoffman

Karl Hoffman 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).

  • Publication number: 20060227462
    Abstract: A reversed pressure relief valve that is used in connection with a computer hard disk drive so as to vent pressurized gases contained within the disk drive while not permitting debris to enter the drive mechanism or the valve. More specifically, the present invention is a reversed direction valve which includes at least one passageway defined by at least a lifter ring, a dry strap, a pressure sensitive adhesive (“PSA”)/body film and a filter media.
    Type: Application
    Filed: March 24, 2005
    Publication date: October 12, 2006
    Inventor: Karl Hoffman
  • Patent number: 6425255
    Abstract: The instant invention is a lightweight, hand portable air conditioner or heater with an attachment that encloses a small area thus permitting the enclosed are to be heated or cooled. The apparatus has a housing unit with wheels and a handle for pulling or pushing the unit. The top of the unit has two telescopic extension poles that can be extended the length of a bed. A suitable material placed over the extended V shaped poles creates a small enclosure for a person. The housing unit contains a compressor with a refrigerant, two fans operated by a central motor, and a cool portion and hot portion. The compressor will cool the refrigerant by compressing the gas to liquid, the cool liquid will be diverted to the cool portion and a fan will direct the cool air out of the housing unit through a vent and into the enclosed area created by the material draped over the extended poles. As a result, the enclosed area can be cooled allowing a person inside to rest or sleep comfortably.
    Type: Grant
    Filed: December 26, 2000
    Date of Patent: July 30, 2002
    Inventor: Karl Hoffman
  • Patent number: 5511883
    Abstract: A hang tab for hanging packages from a display rack having a lower portion secured to the package and an upper portion extending above the package, the upper portion having an aperture therethrough for hanging the package and an adhesive layer covered by a release layer for re-securing the package after first use. For re-sealing the package, the release layer is removed, the package is folded-over across an open top end and the adhesive layer is secured to a lower body area of the package.
    Type: Grant
    Filed: December 29, 1994
    Date of Patent: April 30, 1996
    Assignee: Plitek, L.L.C.
    Inventors: John Clark, Karl Hoffman
  • Patent number: D454978
    Type: Grant
    Filed: January 11, 2001
    Date of Patent: March 26, 2002
    Assignee: Remington Corporation, L.L.C.
    Inventors: Greg Karl Hoffman, Scot Lawrence Forrest
  • Patent number: D454979
    Type: Grant
    Filed: January 11, 2001
    Date of Patent: March 26, 2002
    Assignee: Remington Corporation, L.L.C.
    Inventors: Greg Karl Hoffman, Scot Lawrence Forrest
  • Patent number: D456947
    Type: Grant
    Filed: January 11, 2001
    Date of Patent: May 7, 2002
    Assignee: Remington Corporation, L.L.C.
    Inventors: Greg Karl Hoffman, Scot Lawrence Forrest
  • Patent number: D477689
    Type: Grant
    Filed: January 22, 2002
    Date of Patent: July 22, 2003
    Assignee: Remington Corporation, L.L.C.
    Inventors: Greg Karl Hoffman, Scot Lawrence Forrest