Patents by Inventor Eric L. Schiffman

Eric L. Schiffman 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: 4928707
    Abstract: A pressure algometer apparatus (50, 100) is provided. The pressure algometer apparatus (50, 100) provides a combination mechanical and electrical pressure algometer including a hand held pressure transducer (52, 102) electrically interconnected (53, 138) to an amplifier meter arrangement (54, 104). The algometer apparatus (50, 100) includes a pressure readout display (70, 144) which indicates the pressure sensed by the pressure transducer (52, 102). A recording device (150) may be attached to the algometer apparatus (100) to provide a permanent record (148) of the pressure sensed by the pressure transducer (102). The pressure algometer apparatus (100) further includes a latch device (106) which, when activated, holds the pressure readout display (144) constant and marks the permanent record (148).
    Type: Grant
    Filed: September 2, 1988
    Date of Patent: May 29, 1990
    Assignee: Regents of the University of Minnesota
    Inventors: Eric L. Schiffman, James R. Fricton, Lawrence M. Espy
  • Patent number: 4768521
    Abstract: A pressure algometer apparatus (20,50). The pressure algometer apparatus (20) provides an all mechanical pressure algometer including a balloon-like bladder member (22) for positioning at an end of a user's finger. An air tight interior (44) of the balloon-like member (22) is interconnected by tubing (42) to a pressure gauge (40). The algometer apparatus (50) includes a handheld pressure transducer (52) electrically interconnected (53) to an amplifier meter arrangement (54).
    Type: Grant
    Filed: March 17, 1987
    Date of Patent: September 6, 1988
    Assignee: Regents of the University of Minnesota
    Inventors: Eric L. Schiffman, James R. Fricton, Lawrence M. Espy