Dow Corning Corporation

Todd J Bridgewater

Daniel R Petrak

Andrew Szweda

John E Plott

A method for changing the dielectric properties of a polymer impregnated and pyrolyzed ceramic matrix composite (polymer impregnated and pyrolyzed ceramic matrix composite) is disclosed. The polymer impregnated and pyrolyzed ceramic matrix composite can be used in aircraft and turbine engines. polymer impregnated and pyrolyzed ceramic matrix composite comprises a ceramic matrix, a reinforcing fiber, and at least 1 additive used to change dielectric properties (dielectric constant and loss factor). The additive can be a low dielectric constant material having a dielectric constant in the range of 1 to 7.5. The low dielectric constant material can be an oxide such as silica or aluminosilicate or a non-oxide such as silicon nitride, boron nitride, or silicon carbide. The low dielectric constant material can be incorporated in the ceramic matrix as a filler. The low dielectric constant material may be incorporated in a uniform array of holes fabricated in the polymer impregnated and pyrolyzed ceramic matrix composite.

Method for changing the dielectric properties of a ceramic matrix composite

A fixation device for securing articles such as benthic barriers to the earth comprising an elongated subteraneanly pivotable plastic body having a strap affixed centrally to one side thereof, and a benthic barrier clamping element with an aperture therethrough that is slidable on the strap. The strap is intended for passage through a hole in a benthic barrier, and the clamping element in ratchet-like fashion secures the benthic barrier to the ground or lake bottom to a desired degree of tightness.

Anchoring means for benthic barrier

A fixation stake for securing articles such as benthic barriers to the earth comprising hollow thin-walled elongated plastic body and an enlarged head portion at one end thereof, and a method and apparatus for inserting the stakes into the ground comprising a rod portion of a size suitable to be inserted through the hollow bore of the stakes, the apparatus having an upright handle portion and a horizontal foot peddle for insertion of the stakes into the ground.

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Saginaw County, MI, United States of America

Todd J Bridgewater