Patents by Inventor Charles N. Mazal

Charles N. Mazal 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: 4350477
    Abstract: A portable pumping system for administering fluids intravenously to a patient. The system has a tube connected between the fluid source and the patient with one-way valves at each end of the tube to limit the flow to one direction. A middle portion of the tube is positioned within a first chamber that is connected by a hose to a second chamber. The second chamber has a flexible member that is reciprocally moved by an arrangement that includes a housing and a source of compressed gas. The housing has a valved inlet and outlet and the flexible member forms a portion of the boundary of the housing. The valve for the outlet of the housing is attached to the flexible member which is a metallic disc inherently biased in a concave shape in relation to the housing. In operation, the flexible member inverts to a convex shape as pressure increases within the housing emitting a click.
    Type: Grant
    Filed: April 20, 1977
    Date of Patent: September 21, 1982
    Inventor: Charles N. Mazal