Patents Assigned to Frau S.p.A.
  • Centrifugal separator with rotating seals on the fixed upper head
    Patent number: 4936821
    Abstract: The liquid being handled is introduced through a centrifugal conduit 1, is separated according to the different density and the two liquid phases exit through conduits 4 and 5. The centrifugal separator comprises disks for sealing (6, 11 and 19) which are fixed respectively to the central part of the rotor 7 to the middle disk 12 and to the upper cover 20 of the apparatus against which the moveable shaped rings (8, 13, 14 and 17) press. The movable rings are subjected to the pressure of the liquid being introduced into the separator as well as the pressure of the two liquid phases being separated by centrifugation due to the difference in specific weight. In this manner, a perfect seal between the different phases is ensured, no biasing means are needed and there is no necessity of particular external cooling.
    Type: Grant
    Filed: July 29, 1988
    Date of Patent: June 26, 1990
    Assignee: Frau S.p.A.
    Inventor: Remo Zuccato
  • Centrifugal separator of liquids with rotating seals on the fixed upper head
    Patent number: 4810240
    Abstract: The centrifugal separator is provided with an inlet (1) for the liquid in the center, two exits (4 and 5) for the two phases of different density, rotating seals (13,14,15 and 21) which on contact with rings (10,11,12 and 19) resiliently fixed to the fixed upper part of the separator, guarantee a perfect separation of the liquid and the cooling water under pressure.
    Type: Grant
    Filed: November 3, 1987
    Date of Patent: March 7, 1989
    Assignee: Frau S.p.A.
    Inventor: Remo Zuccato
  • Cover for steering wheels
    Patent number: 4782872
    Abstract: A cover for the steering wheel of a motor vehicle, a motor boat or another conveyance has an annular body of leather or the like with an annular slot. The marginal portions of the annular body along the slot are doubled so that they comprise inner and outer layers which are integral with one another adjacent the slot and are secured to each other by one or more rows of stitches. Rows of relatively long stitches are provided in regions where the overlapping layers of the marginal portions are integral with each other, and a lace is used to connect the long stitches on one marginal portion with the long stitches on the other marginal portion. The lace can be caused to assume an undulate shape, particularly a zig-zag formation, and can be tightened as strongly as desired to narrow the slot or to reduce the width of the slot to zero.
    Type: Grant
    Filed: June 25, 1987
    Date of Patent: November 8, 1988
    Assignee: Poltrona Frau S.p.A.
    Inventor: Franco Moschini
  • Luggage case
    Patent number: D275911
    Type: Grant
    Filed: January 11, 1982
    Date of Patent: October 16, 1984
    Assignee: Poltrona Frau S.p.A.
    Inventor: Makio Hasuike
  • Luggage case
    Patent number: D278861
    Type: Grant
    Filed: January 11, 1982
    Date of Patent: May 21, 1985
    Assignee: Poltrona Frau S.p.A.
    Inventor: Makio Hasuike
  • Armchair
    Patent number: D313703
    Type: Grant
    Filed: June 18, 1987
    Date of Patent: January 15, 1991
    Assignee: Poltrona Frau S.p.A.
    Inventors: Franco Moschini, Giampiero Pistacchi, Werner Gremm