Patents by Inventor Helmut Burfeindt

Helmut Burfeindt 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).

  • Strain gage and measuring transducer and method of producing the same
    Patent number: 5631622
    Abstract: A strain gage includes, in stacked order, a backing film (1), a measuring resistor grid (2), and a cover (16) including a first layer (6) of an insulating material and a second layer (7) of a metallic material. At least the metallic second layer (7) of the cover is a metallic foil having a size or extension in the plane of the cover that is smaller than or equal to the size or extension of the backing film (1). The strain gage is simple to manufacture in a continuous strip or large sheet process, and is relatively insensitive to the effects of moisture or changes in humidity.
    Type: Grant
    Filed: February 14, 1995
    Date of Patent: May 20, 1997
    Assignee: Hottinger Baldwin Messtechnik GmbH
    Inventors: Martin Hauber, Helmut Burfeindt