Patents by Inventor Jerome S. Hahn

Jerome S. Hahn 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: 4907344
    Abstract: The invention relates to knives and in particular the knives of the type of construction described and claimed in British Patent No. 2,108,887, where the blade has a V-shaped cutting edge centrally located on a parallel sided blank with the edge flat ground to one side and ground with formulations such as serrations or serrations and scallops. The object of the invention is to improve such knives by increasing the strength at the cutting edge, which objective is met by a construction where along that side of the V-shaped cutting edge provided with formulations a number of interruptions are provided in spaced relationship along the length of the cutting edge to assist cutting action, and interruptions to said formations being provided in spaced relationship along the length of the cutting edge to group said formulations into discrete lengths, and said interruptions being such as to maintain a continuous cutting edge along the length of the blade.
    Type: Grant
    Filed: February 22, 1988
    Date of Patent: March 13, 1990
    Assignee: Richardson Sheffield Limited
    Inventor: Jerome S. Hahn
  • Patent number: 4693439
    Abstract: A cap card for a knife holder having, generally, a planar construction with at least one slot in approximate registration with a corresponding slot existing in a knife holder. The cap card may be made of a number of materials, such as, but not limited to, plastic, wood or, preferably, cardboard. Generally, the knife holder will have a plurality of slots of various sizes to hold knives of different sizes. To accommodate the knife holder, the cap card would preferably have an equal plurality of corresponding slots. The slots of the cap card are to be of a slightly narrower than the width of the blade of the knife to be held. This feature is designed to create an interference or friction fit between the slots of the cap card and the knife inserted therethrough so that the knives may be securely held to prevent their movement during transport which would otherwise tend to cause damage to the area of the slots around the knife holder.
    Type: Grant
    Filed: March 6, 1986
    Date of Patent: September 15, 1987
    Assignee: Concept Engineering and Design Corporation
    Inventor: Jerome S. Hahn
  • Patent number: D266735
    Type: Grant
    Filed: August 19, 1980
    Date of Patent: November 2, 1982
    Inventor: Jerome S. Hahn
  • Patent number: D285038
    Type: Grant
    Filed: March 14, 1983
    Date of Patent: August 12, 1986
    Inventor: Jerome S. Hahn
  • Patent number: D294324
    Type: Grant
    Filed: June 18, 1985
    Date of Patent: February 23, 1988
    Assignee: Concept Engineering & Design Corporation
    Inventor: Jerome S. Hahn
  • Patent number: D295134
    Type: Grant
    Filed: July 17, 1985
    Date of Patent: April 12, 1988
    Assignee: Concept Engineering & Design Corporation
    Inventor: Jerome S. Hahn
  • Patent number: D303202
    Type: Grant
    Filed: August 25, 1986
    Date of Patent: September 5, 1989
    Assignee: Regent Sheffield, Ltd.
    Inventor: Jerome S. Hahn
  • Patent number: D303562
    Type: Grant
    Filed: August 25, 1986
    Date of Patent: September 19, 1989
    Assignee: Regent Sheffield, Ltd.
    Inventor: Jerome S. Hahn
  • Patent number: D315660
    Type: Grant
    Filed: April 14, 1986
    Date of Patent: March 26, 1991
    Assignee: Regent Sheffield Ltd.
    Inventor: Jerome S. Hahn