Patents by Inventor Andrzej Stenzel

Andrzej Stenzel 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: 6461231
    Abstract: A pipeline treating apparatus (10) is disclosed which is used to clean the exterior of a pipeline (12) with high pressure air with entrained abrasive. The apparatus has an improved classifier and separator to separate the abrasive grit from lighter debris which includes a classifier and separator within a manifold duct (56) which returns the grit to a collection pan (40) for recovery and causes the lighter airborne dust to be removed through a return duct (58). A series of pressure relief filters (82) reduce the air pressure within a blast chamber (28) and resist debris escaping from the blast chamber past the triple seals (76, 78, 80). The blast nozzle assemblies (834) are attached to the nozzle oscillating frames by snap fittings (74) which avoids threaded connections which may become contaminated by the debris.
    Type: Grant
    Filed: October 21, 1994
    Date of Patent: October 8, 2002
    Assignee: CRC-Evans Rehabilitation Systems, Inc.
    Inventors: Sidney A. Taylor, Stanley J. Rogala, Andrzej Stenzel
  • Patent number: 5520734
    Abstract: A pipeline treating apparatus (350) is disclosed which includes a main frame (352) and a pair of wings (354, 356) pivotally mounted to the main frame for surrounding a pipeline to be treated. Each wing mounts at least one bracket (390, 392) for oscillating motion about a portion of the exterior of the pipeline surface. Each bracket mounts at least one nozzle (382) for treating the outer surface of the pipeline. A single drive motor on each wing can drive a pair of brackets, each bracket being oscillated a different arcuate length than the other bracket, if desired. The number of nozzles mounted on each bracket can be varied to address a specific treatment problem.
    Type: Grant
    Filed: August 11, 1994
    Date of Patent: May 28, 1996
    Assignee: CRC-Evans Rehabilitation Systems, Inc.
    Inventors: Sidney A. Taylor, Stanley J. Rogala, Andrzej Stenzel