Patents by Inventor C. Thielen

C. Thielen 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).

  • Non-whistling vent tube
    Publication number: 20060213567
    Abstract: A non-whistling corrugated tube is provided having a plurality of rib segments interleaved between a plurality of root segments. Each of the rib segments include a pair of axially converging sidewalls intersecting with an apex wall. The geometry of the tube is such that the rib-to-root volume ratio is in the range of 0.1 to 0.2. Corrugated tubes having these geometric configurations have been found to be superior to conventional corrugated tubing for attenuating airborne noise generated by fluid flow therethrough, i.e., whistling.
    Type: Application
    Filed: March 25, 2005
    Publication date: September 28, 2006
    Inventors: David Parpart, Kevin Baxter, C. Thielen
  • Boring bar device and method of assembly
    Patent number: 5809854
    Abstract: A boring bar device comprising an elongated shank and a chisel head. The shank and chisel head are connected by a mating V-shaped cross-sectional joint wherein a solder shim of a predetermined composition is utilized in conjunction with a brazing process to connect the chisel head to the elongated shank to provide the boring bar device of the invention.
    Type: Grant
    Filed: June 27, 1996
    Date of Patent: September 22, 1998
    Assignee: National Tooling & Machining, Inc.
    Inventors: Robert C. Thielen, Craig A. Hiatt
  • Shower and tub cleaning device
    Patent number: D382408
    Type: Grant
    Filed: September 6, 1995
    Date of Patent: August 19, 1997
    Inventor: Kenneth C. Thielen