Patents by Inventor Jeffrey R. Kalman

Jeffrey R. Kalman 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).

  • Utility knife
    Patent number: 6813833
    Abstract: An improved utility knife with an ergonomically shaped handle having a cavity and a working blade holder slidably disposed within the cavity is described. A bottom release lever and a top drive lever are pivotally mounted to the handle and movable with respect to the handle for releasing and moving the working blade holder, respectively. The knife includes an extra blade holder slidably mounted to the handle and movable with respect to the handle within the cavity. The extra blade holder includes a front support end for engagement with a working blade, whereby slidable displacement of the extra blade holder disengages the support end from the working blade to allow removal and replacement of the working blade from the utility knife.
    Type: Grant
    Filed: January 15, 2003
    Date of Patent: November 9, 2004
    Assignee: Nottingham-Spirk Design Associates, Inc.
    Inventors: Craig M. Saunders, Jeffrey R. Kalman, Todd A. Spiegelberg
  • Utility knife
    Publication number: 20030154606
    Abstract: An improved utility knife with an ergonomically shaped handle having a cavity and a working blade holder slidably disposed within the cavity is described. A bottom release lever and a top drive lever are pivotally mounted to the handle and movable with respect to the handle for releasing and moving the working blade holder, respectively. The knife includes an extra blade holder slidably mounted to the handle and movable with respect to the handle within the cavity. The extra blade holder includes a front support end for engagement with a working blade, whereby slidable displacement of the extra blade holder disengages the support end from the working blade to allow removal and replacement of the working blade from the utility knife.
    Type: Application
    Filed: January 15, 2003
    Publication date: August 21, 2003
    Applicant: Nottingham-Spirk Design Associates, Inc., an Ohio corporation
    Inventors: Craig M. Saunders, Jeffrey R. Kalman, Todd A. Spiegelberg