A metal stem seal for sealing between a movable stem and a stem opening in a valve body has an annular seal body through which the stem extends. The seal has a flexible annular seal leg depending from the seal body for sealing against the stem. The inner surface of the seal leg has at least one groove defining a plurality of sealing lands, including at least a lower sealing land and upper sealing land. The undeflected inner diameter of the lower sealing land is selected so that upon insertion of...

A V-shaped deformable metallic seal is retained in a groove formed in a flat face on one metallic joining section and effects a seal against a flat face on an opposing metallic joining section when these sections are brought together by suitable means.

A method of forming a metal-to-metal antifuse. An antifuse stack 32 is formed comprising a first metal layer 16, an antifuse dielectric layer, and an etchstop layer. The etchstop layer may, for example, comprise an oxide layer 24 and an amorphous silicon layer 28. An antifuse via 44 is etched through an interlevel dielectric layer 36 to the antifuse stack 32. Next, a portion of the etchstop layer at the bottom of via 44 is removed. Finally, a second layer of metal 48 is deposited to fill antifus...

Two axially aligned tubes have clamped, annular sealing members mounted thereon to define convex and spherical surfaces maintained in line sealing contact.

In accordance with an illustrative embodiment of the present invention, a seal structure that provides a leak-proof metal-to-metal seal against an opposing seal surface includes an annular body having an inwardly directed flange and an outwardly directed flange, each flange having a seal foot on the outer portion thereof. The inner foot engages the seal surface first and produces elastic bending of the inner flange as a cantilever beam, together with a rotation of the annular body which reduces ...

Thin film metal-insulator-metal capacitors having enhanced surface area are formed by a substituting metal for silicon in a preformed electrode geometry. The resulting metal structures are advantageous for high-density DRAM applications since they have good conductivity, enhanced surface area and are compatible with capacitor dielectric materials having high dielectric constant.

The invention relates to a method for the production of an adhesive and an adhesive kit for joining similar or different metal surfaces or ceramics, especially in the field of biomedicine. The objective of the invention is to avoid polymerization-linked by-products and disadvantageous effects, in addition to enabling a temporary biocompatible bond between metal and metal or metal and ceramics. The inventive method consist in using a monomer-free polymethylmethacrylate which is mixed with a suita...

A subterranean well tool such as a packer and attached telescoping seal receptacle assembly is disclosed. The tool is fabricated from a plurality of threaded tubular members and annular deformable rings fabricated of a metal softer than the tubular members are used to establish metal-to-metal sealing integrity between interengagable component members. Upon full engagement, sealing integrity is established along the transverse interface between each tubular member and the deformed seal ring. Duri...

Thin film metal-insulator-metal capacitors having enhanced surface area are formed by a substituting metal for silicon in a preformed electrode geometry. The resulting metal structures are advantageous for high-density DRAM applications since they have good conductivity, enhanced surface area and are compatible with capacitor dielectric materials having high dielectric constant.

Lightweight metal-thermoplastic-metal laminates exhibiting an improved combination of good formability and bending strength comprise a core layer of a thermoplastic material selected from certain partly crystalline polyamides and polyesters, and a metal layer of certain aluminum alloys laminated on each side of the core layer, said thermoplastic and metal layers having certain requirements with respect to thickness and tensile elongation, and, additionally for the metal, tensile offset yield str...