Patents by Inventor Francesco Valbonesi

Francesco Valbonesi 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).

  • Mould for the manufacture of semi-elbows of thermally insulating material for pipes
    Patent number: 4457687
    Abstract: A mould for the manufacture of thermally insulating semi-elbows for pipes comprises mating male and female mould parts definng therebetween an annular mould chamber extending for 360.degree. about a central axis, the mould parts being provided with holes or apertures for blowing overheated air into the mould chamber to produce a moulded shaped product from a mixture of mineral fibres and a polymerizable resin when placed in the mould chamber.
    Type: Grant
    Filed: April 11, 1983
    Date of Patent: July 3, 1984
    Assignee: Isoring S.r.l.
    Inventor: Francesco Valbonesi