Patents Assigned to Dayton G.R.P. S.r.l.
  • Patent number: 4137119
    Abstract: Apparatus for manufacturing poles of reinforced plastics material by advancing a prefabricated hollow core of plastics material coaxially with a plurality of resin impregnated reinforcing threads, the threads being held tight and radially distributed around the core and being caused to adhere thereto, spirally winding at least one impregnated reinforcing thread around to at least partially cover the core and impregnated reinforcing threads during their advance, and leaving the core and the impregnated reinforcing threads to harden to obtain the union of the threads with the core.
    Type: Grant
    Filed: January 28, 1977
    Date of Patent: January 30, 1979
    Assignee: Dayton G.R.P. S.r.l.
    Inventor: Aldo Piola