Felt Products Mfg. Co.

Fel-pro Incorporated

David A Cobb

Frank L Miszczak

A load sensing gasket having a gasket body defining a service opening for fluids and having a load sensor encased in a cavity in the body. The gasket body comprises a first gasket layer providing a first outer gasketing surface and a first inner surface, a second gasket layer providing a second outer gasketing surface and a second inner surface, the inner surfaces together defining the cavity and side walls for defining a perimeter for the cavity. The load sensor includes confronting electrodes and a pressure sensitive electrically resistive material between the electrodes and conductors extending outwardly of the perimeter. A seal between the first and second gasket layers around the load sensor seals the electrodes in the cavity from fluids when the gasket is in use.

Gasket with encased load sensor

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.

Composite embossed sandwich gasket with graphite layer

A high temperature resistant gasket assembly comprises a metallic sheet member defining a plurality of openings, including at least two bolt holes through which bolts are adapted to pass and at least one high pressure opening for surrounding a high pressure zone to be sealed. The metallic sheet member defines a surface zone adjacent the high pressure opening. A metallic wire is disposed on a surface zone of the metallic sheet member closely adjacent to the high pressure opening to effect a seal at the surface zone. Preferably, the metallic sheet is of a low carbon steel and the wire is a copper wire. A second metallic sheet member of substantially the same shape, form and material as the metallic sheet member may be positioned to overlie the metallic wire, and to confront the first sheet member to form a sandwich with the wire between the sheet members. The second sheet member has a second surface zone complementary to the first surface zone. The gasket assembly may be precompressed so that the wire is significantly embedded into each surface zone to provide a sealing zone of high sealing stress adjacent the high pressure opening. The metallic wire may be shaped to surround the high pressure opening.

Growing community of inventors

Hazelcrest, IL, United States of America

David A Cobb