Patents by Inventor Alain A. P. Pereebois

Alain A. P. Pereebois 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).

  • Butterfly valve structure and a sleeve therefor
    Patent number: 4227675
    Abstract: In this butterfly valve structure having an elastic sleeve, an outer projection of the sleeve in the free state has the same sectional shape as a groove in the body of the valve. The radial thickness of the seat is at least equal to ten times the depth to which the valve member, when closed, penetrates into the seat. The depth of the groove is at least equal to 4/10 of the minimum radial thickness of the seat. The axial length of the bottom of the groove is of the same order of magnitude as that of the seat. The corners of the groove are rounded. This valve structure is of particular advantage for high temperature and/or when the valve member remains closed for a prolonged period.
    Type: Grant
    Filed: January 27, 1978
    Date of Patent: October 14, 1980
    Assignee: Pont-A-Mousson S.A.
    Inventors: Jean G. Sutter, Alain A. P. Pereebois