Patents by Inventor Steven F. Rasmussen

Steven F. Rasmussen 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: 5808904
    Abstract: An apparatus (20) for press operation data acquisition comprises a tie rod (45a) for bearing a load during a press cycle. The rod (45a) has a load bearing portion (76) and a non-load bearing portion (78). An elongated, axially extending bore (75) is formed in one end (62) of the rod (45a) such that the bore (75) extends from the non-load bearing portion (78) into the load bearing portion (76). A linear variable differential transformer (LVDT) (24), includes a core portion (114) movably disposed relative to a coil portion (118), such that magnetic flux generated by current impression on the coil portion (118) is influenced by a position of the core portion (114) relative thereto. The core portion (114) is secured to a shaft (80). The shaft (80) is adapted for axial movement within the bore (75) in response to deformation of the rod (45a) during press operation. The coil portion (118) is adapted to receive an electric signal current from an associated electric source.
    Type: Grant
    Filed: November 7, 1996
    Date of Patent: September 15, 1998
    Assignee: Angstrom Corporation
    Inventors: Steven F. Rasmussen, Robert F. Rasmussen, Steven G. Belovich