Patents by Inventor Charles Edward Meisch

Charles Edward Meisch 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: 4112949
    Abstract: Apparatus for collecting body fluid utilizes a condition of negative pressure in a chamber for drawing body fluid from an area of a wound at a relatively constant flow rate. The apparatus includes a piston assembly movable in a housing from a first to a second position under forces of atmospheric pressure acting on the piston assembly. The apparatus further comprises an assembly for enabling operation of the piston assembly including at least one cylinder and piston movable therein by pulling on a hand gripping element attached to the piston to develop a partial vacuum in the cylinder. The piston assembly includes a diaphragm which is movable for maintaining the chamber sealed except through a port adapted for receipt of a tube connecting with said wound. The evacuator apparatus may be reused by emptying body fluid from the chamber and reenabling the piston assembly.
    Type: Grant
    Filed: November 15, 1976
    Date of Patent: September 12, 1978
    Assignee: Howmedica Inc.
    Inventors: Arthur Lee Rosenthal, Marvin Alpern, Charles Edward Meisch
  • Patent number: 4081866
    Abstract: A prosthetic knee joint comprising cooperating femoral and tibial components that allow controlled rotational movement during extension and flexion, simulating the anatomical movement characteristics of the natural knee joint.
    Type: Grant
    Filed: February 2, 1977
    Date of Patent: April 4, 1978
    Assignee: Howmedica, Inc.
    Inventors: Jackson E. Upshaw, Charles Edward Meisch