Patents by Inventor Rolf Haggstrom

Rolf Haggstrom 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: 20050139018
    Abstract: Simple and inexpensive electrical compensation for off-axis and off-center loading sensitivity is possible in compression column load cells having a pair of compensation strain gages in series with each of the main strain gages in the load cell. The compensation gages are connected in series with their associated main strain gage. Each set of one main strain gage and two series connected compensation gages form one bridge arm in a strain gage bridge. Two compensation gages meet at each bridge corner, and are shunted by a common trimming resistor. The loading sensitivity compensation works for both conventional fixed axis load cells and Rocker Pin load cells.
    Type: Application
    Filed: February 28, 2005
    Publication date: June 30, 2005
    Applicant: Flintec Group, Ltd.
    Inventor: Rolf Haggstrom