Patents Assigned to Societe d'Etudes et de Recherches de Ventilation et d'Aeraulique S.E.R.V.A.
  • Delivery stabilizer for ventilation shaft
    Patent number: 4336904
    Abstract: A bladder, suitably formed of silicone rubber and molded into a cylindrical shape, is provided internally with a deforming spring. The resultant unit serves as a delivery stabilizer for a ventilation shaft without loss of elasticity of the bladder.
    Type: Grant
    Filed: September 29, 1980
    Date of Patent: June 29, 1982
    Assignee: Societe d'Etudes et de Recherches de Ventilation et d'Aeraulique S.E.R.V.A.
    Inventors: Pierre Jardinier, Jack Simonnot