Patents by Inventor Philippe Persohn

Philippe Persohn 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).

  • Device for fixing a water meter on to a base and method relating thereto
    Patent number: 4995643
    Abstract: Contact surfaces of a water meter (1) and a base (2) of a meter support (3) comprising a water inlet duct (4) and a water outlet duct (5) are each bordered by an annular shoulder (6, 7). An assembly ring (8) is provided so as to keep the two annular shoulders (6, 7) in contact, this ring (8) comprising slits (9) separating a series of elastic fingers (10). The ring (8) comprises moreover on its inner face an annular groove (11) complementing the two annular shoulders (6, 7). A rigid collar (15) force-fitted onto the elastic fingers (10) and bearing against outwardly projecting lugs (12) at the ends thereof keeps the annular groove (11) against the annular shoulders (6, 7) which are in contact.
    Type: Grant
    Filed: September 14, 1989
    Date of Patent: February 26, 1991
    Assignees: Manufacture d'Appareillage Electriquie de Cahors, Lyonnaise des Eaux, Persohn S.A.
    Inventors: Alain Rappart, Henri Loosdregt, Paul Pershon, Philippe Persohn
  • Device for connecting and supporting a water-meter
    Patent number: 4819482
    Abstract: The device for connecting and supporting a water-meter (1) comprises a water-inlet pipe (2) and a water-outlet pipe (3) secured in a support (8). The support comprises a stationary seat (9) in which are mounted the water-inlet pipe (2) and the water-outlet pipe (3). The seat carries a plate (10) comprising two conduits (11, 12) designed to be connected to inlet (4) and outlet (5)-apertures on the meter (1). The plate (10) is mounted to rotate upon seat (9) about an axis (X-X') for the purpose of opening up or shutting off the flow of water, or for testing the meter.
    Type: Grant
    Filed: March 14, 1988
    Date of Patent: April 11, 1989
    Assignees: Manufacture d'Appareillage Electrique de Cahors, Lyonnaise des Eaux, Persohn S.A.
    Inventors: Alain Rappart, Henri Loosdregt, Paul Persohn, Philippe Persohn
  • Device for the protection against freezing of installations for the storage or the supply of a freezing liquid, in particular water
    Patent number: 4798239
    Abstract: A device for protecting installations for the storage or supply of a freezing liquid, in particular water, against freezing, comprising at least one heat tube or heat pipe having one end placed in the ground at a distance from the surface sufficient so that the temperature at this location is always above 0.degree. C., the end being equipped on the outside with a fin type heat recovery system or the like, and on the inside with a system for the distribution of the condensate drip, while the other end of the heat pipe is laid out and arranged so that it is located in the immediate vicinity of the part of the installation exposed to the risk of freezing, and the application of the device to installations for the storage and distribution of water.
    Type: Grant
    Filed: January 6, 1984
    Date of Patent: January 17, 1989
    Inventors: Paul H. Persohn, Philippe Persohn