Patents by Inventor Patrick H. Murphy

Patrick H. Murphy 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).

  • Thermoplastic bellows and method of forming the same
    Patent number: 5345857
    Abstract: A bellows for use in fluid control devices includes a head, a shoulder, a blind hole extending from an opening in the shoulder to the head, and a hollow compressible neck between the head and the shoulder, through which the blind hole extends. The neck includes a thin-walled, circumferential band located between the shoulder and the head. The bellows is formed by forming, in a body of thermoplastic material, an inner bore having an inner diameter. Next, at least one thin-walled circumferential band is formed between the head and the shoulder. Finally, the body is deformed to cause each circumferential band to bow.
    Type: Grant
    Filed: February 2, 1993
    Date of Patent: September 13, 1994
    Assignee: Osmonics, Inc.
    Inventor: Patrick H. Murphy