Patents by Inventor Mark A. Kempf

Mark A. Kempf 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: 20080289389
    Abstract: A forming device includes an input including wire in an unformed state. The forming device has a forming station configured to receive the wire, the forming station comprising a plurality of forms, each independently movable toward and away from the wire such that the forms collectively bend the wire into a formed state that is periodic and defines a wavelength.
    Type: Application
    Filed: May 27, 2008
    Publication date: November 27, 2008
    Inventors: Bradley A. Fitch, Mark A. Kempf, Anthony M. Harrison
  • Publication number: 20030093060
    Abstract: A catheter assembly defines a lumen. The catheter assembly includes a tight wound spring coil comprised of a lubricious coil material wherein the spring coil defines the lumen and has an outer surface. A wrap is wound about the outer surface of the spring coil. An exterior coating covers the spring coil and the wrap.
    Type: Application
    Filed: November 9, 2001
    Publication date: May 15, 2003
    Applicant: Vadnais Technologies Corporation
    Inventor: Mark A. Kempf
  • Patent number: 5538118
    Abstract: An electromagnetically actuated clutch having an integrated sensor activated control circuit for selectively engaging and disengaging the clutch.
    Type: Grant
    Filed: October 19, 1994
    Date of Patent: July 23, 1996
    Assignee: Reell Precision Manufacturing Corporation
    Inventors: Mark A. Kempf, Anthony M. Harrison
  • Patent number: 5477715
    Abstract: An apparatus includes means for feeding a wire from a fixed outlet against a coiling surface having a variable location in relation to the fixed outlet. The fixed outlet directs the wire in a path and the wire is deflected from the path by the coiling surface to bend the wire. The wire is monitored and output signals indicative of a physical characteristic of the deflected wire are generated. A controller receives the signals and generates control signals as a function thereof. An actuator, responsive to the control signals, adjusts the location of the coiling surface such that the physical characteristics are substantially uniformly maintained during the forming of the spring.
    Type: Grant
    Filed: November 16, 1994
    Date of Patent: December 26, 1995
    Assignee: Reell Precision Manufacturing Corporation
    Inventor: Mark A. Kempf
  • Patent number: 5454249
    Abstract: Apparatus for forming a spring having a spring body and first and second generally axial toes from a wire is disclosed. The apparatus includes mechanisms for feeding the wire from a fixed outlet, wherein the fixed outlet directs the wire in a path; bending a first length of wire fed from the fixed outlet to form a first generally axial toe; bending a second length of wire fed from said fixed outlet to form a spring body; and bending a third length of the wire fed from the fixed outlet to form a second generally axial toe. The wire is then clipped after the formation of the second generally axial toe to separate the spring from a remaining portion of the wire. A method of forming such a spring is also disclosed.
    Type: Grant
    Filed: November 21, 1994
    Date of Patent: October 3, 1995
    Assignee: Reell Precision Manufacturing Corporation
    Inventors: Mark A. Kempf, Sean M. Frost