Two Abreast Patents (Class 278/4)
  • Patent number: 11920659
    Abstract: Disclosed herein are methods, systems, and components for the design of a flat belt based block and tackle design that is theoretically free of fleet angles. A mapping technique forms a set of planar positions for the centerlines of the free spans that provides a plurality of sheave geometries, which reside on a common axis and spans that are free of fleet angles at the sheave engagement interfaces. This permits the use of high-performing flat belts in high-reduction block and tackle topologies, with the principal benefits of an extended service life, high power transmission efficiency, more effective traction power transfer, and a compact machine design.
    Type: Grant
    Filed: December 27, 2021
    Date of Patent: March 5, 2024
    Assignee: Liftwave, Inc.
    Inventor: Blake Sessions
  • Patent number: 6651018
    Abstract: In a method for correcting a calibration table T(n,k) of a CT apparatus that contains calibration values, the CT apparatus having a detector system with N≧2 rows of detector elements following one another in the z-direction that include a first active row of detector elements in the z-direction and a last active row of detector elements in the z-direction, for correcting the calibration values of the aforementioned first and last active rows of detector elements, a reference vector R(k) is produced, the error is determined with respect to the first and last active rows of detector elements, and the error F(n,k) of the first and last active rows of detector elements is subtracted from the corresponding calibration values of the calibration table T(n,k) for determining corrected calibration values Tcor(n,k) with respect to the first and last active rows of detector elements.
    Type: Grant
    Filed: March 5, 2002
    Date of Patent: November 18, 2003
    Assignee: Siemens Aktiengesellschaft
    Inventors: Helmut Kropfeld, Karl Schwarz