Flexitallic Investments Incorporated

Federal-mogul Technology Limited

Alan William Atkinson

Stephen Peter Bond

John Robert Hoyes

Darryl Alfred Turland

Stephen P Bond

Adam M West

Gary Briggs

Andrew Timothy Cole

Julia Rosalind Mary Hood

Kevin Richard Holmes

Peter George Mowvley

Anthony Russel Currie

Melanie Jayne Walsh

Paul Reuben Percival

Stephen Alexander Schultze

David Richard Bridge

Adam Martin West

Stephan Peter Bond

A sealing-enhancing coating for a gasket or a portion of a gasket includes flaky particles of chemically exfoliated vermiculite, at least 90% by weight of the particles having a thickness of no more than 30 microns, and no dimension greater than 1 mm. The particles form 10 to 90 wt. % of the coating. The coating also includes 50 to 10 wt. % of an organic polymer binder which when formed into a film 1 mm or less in thickness and heated to 300&#xb0; C. in free air for 24 hours either does not decompose or decomposes leaving a residue of at least 20% by weight of film.

Gasket coating containing chemically exfoliated vermiculite

A gasket is described. The gasket comprises a sealing layer and a support layer. The sealing layer is formed from a resilient material which comprises a CEV component in a proportion of at least 25% w/w of the sealing layer. The CEV component is at least partially derived from dry CEV. A hydrolysis resistant polymer to improve the water resistance of the sealing layer is also provided in the proportion of less than 20% w/w of the sealing layer. Generally, the level of CEV falls within the range 25-80% w/w of the sealing layer. A method of producing a gasket is also described. The method involves applying a wet sealing layer dough to a support material, and drying the wet sealing layer dough on the support material. The solids content of the wet sealing layer dough prior to the drying step is in the range 30-80% w/w of the dough material.

Gaskets

A gasket ( ) comprises a sealing member which forms a closed loop extending around a hole. The sealing member is formed from resilient metal and has a transverse cross section which is generally X-shaped and comprises two arms ( ) which project inwardly of the hole, and two arms ( ) which project outwardly of the hole. The inwardly projecting arms form a first seal around said hole, and the outwardly projecting arms form a second seal around said hole. Each arm extends from a junction ( ) with the remainder of the gasket to a tip ( ) of the arm which engages one of the bodies. Each arm has its greatest thickness at said junction ( ) and its smallest thickness at a point adjacent to or at said tip ( ), the arm continuously reducing in thickness between said junction and said point. The gasket can yield from the tips of the arms inwardly as the pressure on the gasket increases.

A gasket (,) comprises a first sealing member (,) and a second sealing member (,) both made of springy metal, and a clamping member (,) which holds the first and the second sealing members in an overlying relationship. The first sealing member (,) has an arm portion (,) projecting from the clamping member (,), the arm portion being adapted to resiliently form a seal with a first body. The second sealing member (,) has an arm portion projecting from the clamping member (,), the arm portion being adapted to resiliently form a seal with a second body. A compression limiting stop (,) is provided.

Gasket

A head gasket which acts, when clamped between a head and a cylinder block of an internal combustion engine, to form a seal around at least one lubricant or hydraulic fluid passage which extends between the head and the block. The gasket also comprises a non-return valve which extends across said passage and allows flow of liquid in said passage towards the head but prevents flow of liquid in said passage towards the block.

Head gasket with a check valve

Sealing material comprises from 45% to 90% by weight exfoliated graphite, from 5% to 20% by weight thermosetting resin and from 5% to 50% by weight fibrous filler which is heat resistant at 250&deg; C. The fibrous filler has fibres at least 90% of which have a fibre length of less than 200 &mgr;m, and an aspect ratio of less than 10:1.

Sealing material

Forming a composite panel

Growing community of inventors

Nr. Rugby, United Kingdom

Alan William Atkinson