Patents by Inventor George L. Sommerfeld

George L. Sommerfeld 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).

  • Kit assembly for use during a laparoscopic surgical procedure
    Patent number: 5453094
    Abstract: A kit assembly for use during a laparoscopic surgical procedure. The kit assembly may have a plurality of cannula or a plurality of trocar assemblies. The kit assembly affords the convenient use of different types of trocar or cannula assemblies during a laparoscopic surgical procedure.
    Type: Grant
    Filed: September 17, 1993
    Date of Patent: September 26, 1995
    Assignee: Minnesota Mining and Manufacturing Company
    Inventors: Gerald L. Metcalf, Vern E. Radewald, Melinda K. Samples, Kraig M. Keister, George L. Sommerfeld, Alan J. Solyntjes
  • Filtering device
    Patent number: 4345353
    Abstract: A sweeping machine is disclosed including a planar pleated filter and a striking mechanism for removing collected dust from the pleated filter. The striking mechanism includes an elongated strap with resilient pad which overlies the pleated filter. A rotatably driven eccentric weight drives the strap and pad to strike the upper surface of the pleated filter.An industrial filter device is disclosed including a planar pleated filter and a striking mechanism for removing collected dust from the pleated filter. The striking mechanism includes an elongated strap which overlies the pleated filter. A rotatably driven eccentric weight drives the strap to strike the upper surface of the pleated filter.
    Type: Grant
    Filed: November 24, 1980
    Date of Patent: August 24, 1982
    Assignee: Tennant Company
    Inventor: George L. Sommerfeld
  • Surface sweeping machine
    Patent number: 4258451
    Abstract: A sweeping machine is disclosed including a planar pleated filter and a striking mechanism for removing collected dust from the pleated filter. The striking mechanism includes an elongated strap which overlies the pleated filter. A rotatably driven eccentric weight drives the strap to strike the upper surface of the pleated filter.
    Type: Grant
    Filed: July 23, 1979
    Date of Patent: March 31, 1981
    Assignee: Tennant Company
    Inventor: George L. Sommerfeld
  • Method and apparatus for cleaning filter means
    Patent number: 4032307
    Abstract: A filter assembly for use in dust control apparatus wherein the filter assembly employs filter barrier material suspended between opposed end frame means. In order to remove accumulated solids from the filter, stroking means, such as a cam-cam follower arrangement or a rotary eccentric loading arrrangement are operatively coupled to the filter assembly to impart reciprocatory stroking motion to one of said opposed frame means and accordingly to the filter material. The length and frequency of stroking motion is selected so as to provide parametric resonant vibration to the filter material through alternate relaxation and tension generated along the length of the material.
    Type: Grant
    Filed: November 28, 1975
    Date of Patent: June 28, 1977
    Assignee: Tennant Company
    Inventor: George L. Sommerfeld