Layered metallic gasket
OwnerAngelo Fenaroliinventor
Life of this patent
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Abstract
Head gasket (1) comprising a plurality of blades, or rather of circular crown shaped discs that are laid on top of one another according to an alternation of metal (2)—non metal (3), said blades kept together by arranging an adhesive between each pair of consecutive blades, characterised in that the adhesive is applied in spray form.
Claims5
Head gasket comprising a plurality of blades, or rather of circular crown-shaped discs that are laid on top of one another according to an alternation of metal (2) and non-metal blades (3), said blades held together by arranging an adhesive between each pair of consecutive blades, said adhesive being a glue spray consisting of a dispersion of natural glue and resin in the following substances:
- <50% of naphtha, <25% of cyclohexane, 25% of liquefied propane gas, <25% of isobutane and <10% of acetone.
Process for manufacturing a head gasket, as defined in the previous claims, consisting of the following steps:
- cutting the plate, preferably with laser technology;
- trimming and roughing thereof;
- cutting the graphite;
- assembling the layers of steel and layers of graphite by piling them up alternately, one on top of the other, and aligning them by means of a striker (4);
- applying the glue with uniform and homogeneous spray;
- cold moulding.
Use of a head gasket, and a graphoil gasket, consisting of a continuous strip of metallic material and high-density graphite, wound uniformly in a spiral using a controlled speed, in a butterfly valve to ensure the seal between disc of the butterfly (6) and seat (7), wherein the two gaskets, the head gasket (1) and the graphoil gasket (5) act in combination, the first ensuring the radial seal (8) and the second ensuring the axial seal (9).
Dependencies are inferred from the claim text.