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Raytheon Company

Fmc Corporation

Hrl Laboratories, LLC

John R Herold

John J Vajo

Wayne Richard Anderson

Kevin W Kirby

David E Cain

Bashir M Koleilat

Neil C Crawford

Anthony T Jankiewicz

Carlos Valenzuela

Martin L Samuels

Frank Judnich

Henry Wong

A collapsible kayak comprises a bow unit, a central unit, and a stern unit. The bow unit and the stern unit are both connected to the central unit with hinges, allowing the collapsible kayak to assume either an 'in use' orientation or a 'storage' orientation. While the collapsible kayak is in the &#x201c;in use&#x201d; orientation, the bow unit, the central unit, and the stern unit are held into a linear shape with removable clamps. While the collapsible kayak is in the &#x201c;storage&#x201d; orientation, the bow unit and the stern unit are folded back and locked into place with a securing device.

Collapsible kayak

A method for improving the thermal barrier properties of silicone resin/glass fiber composites. Composites comprising a layer of polysiloxane (silicone resin) matrix with a glass or quartz fiber reinforcement embedded in such matrix and an organic polymeric layer were subjected to multi-cycle heat treatment, preferably with quartz lamps. The polysiloxane layer was pre-coated with graphite dispersion in order to ensure acceptable optical receptivity of the polysiloxane layer. As a result, the silicone resin was converted into a thick porous layer of silicone dioxide, the latter having the improved thermal barrier properties.

Method for obtaining reduced thermal flux in silicone resin composites

A retrieval tool for retrieving a back pressure valve and tree test plug (generally, a check valve) has a spear formed as a solid ring at the bottom with free fingers extending upward. The fingers are resilient and have protrusions adapted to engage a retrieval groove in the check valve. A wedge ring is provided on the tool body to positively lock the fingers in radially outward engagement with the retrieval groove. The wedge ring is fixed to the body by a shear pin so that upon a predetermined axial force the pin shears and releases the wedge ring allowing withdrawal of the tool assembly, if the check valve is stuck in a tubing hanger or coupling.

Retrieval tool for back pressure valve and tree test plug

A wellhead retrieval tool assembly for retrieving a check valve has a spear formed as a solid ring at the bottom with free fingers extending upward. The fingers are resilient and have protrusions adapted to engage a retrieval groove in the check valve. A wedge ring is provided on the tool body to positively lock the fingers in radially outward engagement with the retrieval groove. The wedge ring is fixed to the body by a shear pin so that upon a predetermined axial force the pin shears and releases the wedge allowing withdrawal of the tool assembly.

Wellhead retrieval tool assembly

Growing community of inventors

Houston, TX, United States of America

John R Herold