Patents by Inventor Georges H. Lyssy

Georges H. Lyssy 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).

  • Apparatus for measuring water vapor permeability through sheet materials
    Patent number: 5138870
    Abstract: An apparatus for measuring the water vapor permeability of sheet materials such as films, foils, paper and cardboard, under adjustable constant measuring conditions. A lid having an air inlet opening and an outlet opening is attached on a cup containing water in a vapor and airtight manner. A sheet material, its circumferential border sealingly held between the rims of the cup and lid, separates the water in the cup from the lid. An absorption member containing a moisture-absorbent material is in communication with the outlet opening. A blower in communication with the air inlet opening aspirates air through an air dryer and blows the resulting dry air into the sealed cup containing the sheet material, the permeability of which is to be measured.
    Type: Grant
    Filed: June 17, 1991
    Date of Patent: August 18, 1992
    Inventor: Georges H. Lyssy
  • Process and apparatus for the isostatic measurement of the permeability of a material to the passage therethrough of a gas or vapor
    Patent number: 4112739
    Abstract: A gas-tight chamber has positioned therein a material to be tested such that first and second opposite sides of the material are isolated from each other within the chamber. An enclosed reference circuit includes a first portion of the interior of the chamber which is on the first side of the material. A reference gas is continuously circulated through the reference circuit at the same pressure as the gas or vapor which exists in a second portion of the chamber which is on the second side of the material. This gas or vapor will permeate through the material, from the second side to the first side thereof, into the reference gas within the reference circuit as a function of the permeability of the material. A carrier circuit includes a gas chromatography detection apparatus, and a carrier gas of the same type of gas as the reference gas is continuously passed through the carrier circuit at a pressure higher than the pressure of the reference gas.
    Type: Grant
    Filed: October 13, 1977
    Date of Patent: September 12, 1978
    Inventor: Georges H. Lyssy
  • Process for measuring permeability to gas of walls and/or closure of three-dimensional encasing elements
    Patent number: 4047422
    Abstract: A filled or gas encasing element to be tested is placed in a measuring chamber. The free space between the element and the chamber is filled with filler elements to prevent bursting or inflation of the element. A vacuum is produced in the chamber, and the time required to achieve a predetermined pressure increase therein is measured.
    Type: Grant
    Filed: April 16, 1976
    Date of Patent: September 13, 1977
    Inventor: Georges H. Lyssy