Back to results
US 4,676,515 AGranted
Composite embossed sandwich gasket with graphite layer
AssigneeFelt Products Mfg. Co.
InventorDavid A. Cobb
Life of this patent
Estimating the term…
Abstract
A gasket, such as an exhaust manifold gasket, having improved recovery, sealability and stiffness characteristics. The gasket has two embossed metallic layers and an intermediate compressed expanded graphite layer having a density of at least about 70 pounds per cubic foot. The embossments of the metallic layers are vertically aligned, the vertically aligned embossments extending in the same direction. The embossments are positioned around a clear-through service aperture.
Claims6
A gasket having improved recovery, sealability and stiffness characteristics comprising:
- a first generally flat metallic layer,
- a second generally flat metallic layer,
- an embossment defined by each of said metallic layers and projecting outwardly of the planes of the metallic layers, said embossments being vertically aligned and projecting outwardly of said planes in the same direction,
- a layer of compressed expanded graphite disposed between and laminated to said metallic layers in the zone of the embossments, and being of a density of at least about 70 pounds per cubic foot, and
- a clear-through service aperture defined by said gasket and surrounded by said embossments.
2 more elements
Dependencies are inferred from the claim text.