Patents by Inventor Patrick M. O'Connell, executor

Patrick M. O'Connell, executor 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).

  • Dust trap valve with removeable double-life door and valve seat member
    Patent number: 4304254
    Abstract: A dust valve for the discharge line of a dust collection system includes a removable closet with two wear surfaces and a coacting removable valve door with two wear surfaces mounted within the valve body. Once the coacting wear surfaces on the closet and the door are sufficiently worn that they need replacement, each element can be disconnected from its supporting structure, inverted, and then reconnected to the valve body so as to expose a new wear surface. The useful lives of these elements is thus doubled over conventional single wear surface closets and doors.
    Type: Grant
    Filed: October 18, 1978
    Date of Patent: December 8, 1981
    Inventors: Stephen R. O'Connell, deceased, Patrick M. O'Connell, executor