Metal gaskets
Number of patents in Portfolio can not be more than 2000
United States of America Patent
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-
Aug 13, 2002
Grant Date -
N/A
app pub date -
Jun 29, 2000
filing date -
Jun 30, 1999
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A metal gasket is disclosed in which a shim laid on a bead plate around bore apertures in the bead plate is varied in radial width along the peripheries of the bore apertures to compensate for sealing stress circumferentially of the bore apertures. The metal gasket is composed of a bead plate with beads around its bore apertures and a shim including annular areas defining bore apertures and bridges connecting together any two adjoining annular areas. The shim around the bore apertures has a radial width at the bridges, which is substantially equal with a width across a web defined between any adjoining cylinder bores formed in mating surfaces of the cylinder block and cylinder head. Moreover, the shim at areas other than the bridges is varied continuously in its radial width in a range of from a flat area around the bore apertures to an area corresponding to the bead on the bead plate. Variations in radial width of the shim makes compensate partly for a sealing stress distribution around the first bore apertures.
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