Patents by Inventor Andrew G. Pawlyszyn

Andrew G. Pawlyszyn 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).

  • Method of casting a permanent core plumbing product
    Patent number: 5579823
    Abstract: A plumbing part is made from a permanent core and a body cast around the core. The core is formed of a material which meets the requirements as to the permitted leachability of lead and/or other undesirable materials from the core into water flowing through it. The core material has a melting point preferably at least 200.degree. F. above that of the cast body. The core also has a coefficient of expansion which is equal to or less than that of the material forming the cast body.
    Type: Grant
    Filed: December 7, 1994
    Date of Patent: December 3, 1996
    Assignee: Moen Incorporated
    Inventors: Erwin F. Mikol, Andrew G. Pawlyszyn
  • Permanent core plumbing product
    Patent number: 5579808
    Abstract: A plumbing part is made from a permanent core and a body cast around the core. The core is formed of a material which meets the retirements as to the permitted leachability of lead and/or other undesirable materials from the core into water flowing through it. The core material has a melting point preferably at least 200.degree. F. above that of the cast body. The core also has a coefficient of expansion which is equal to or less than that of the material fuming the cast body.
    Type: Grant
    Filed: April 24, 1995
    Date of Patent: December 3, 1996
    Assignee: Moen Incorporated
    Inventors: Erwin F. Mikol, Andrew G. Pawlyszyn