Abstract: Embodiments described herein include a method for converting free-piston linear motion to rotary motion, comprising: providing a free-piston generator or motor/generator that has at least one piston having two compression heads; and, for each piston, a surface is provided on each compression head defining a helical channel, wherein the piston is rotated in a single direction due to the force imparted to the piston as compressed air in an air box is forced through the helical channel.

Abstract: Embodiments described herein include a method for converting free-piston linear motion to rotary motion, comprising: providing a free-piston generator or motor/generator that includes one or more pistons; and, for each piston, a surface is provided defining a helical channel, wherein the piston is rotated in a single direction through the helical channel.

Abstract: Embodiments described herein include a method for converting free-piston linear motion to rotary motion, comprising: providing a free-piston generator or motor/generator that has at least one piston having two compression heads; and, for each piston, a surface is provided on each compression head defining a helical channel, wherein the piston is rotated in a single direction due to the force imparted to the piston as compressed air in an air box is forced through the helical channel.

Abstract: Embodiments described herein include a method for converting free-piston linear motion to rotary motion, comprising: providing a free-piston generator or motor/generator that includes one or more pistons; and, for each piston, a surface is provided defining a helical channel, wherein the piston is rotated in a single direction through the helical channel.

Abstract: The present invention includes a rotary engine, comprising a stator that includes a bladed heat transfer stator segment comprising an outer surface comprising a plurality of blades creating a flowpath on the outer surface. Rotary engines include Stirling engines and Wankel engines and compound rotary engines.

Abstract: The present invention comprises a thin graphite plate with associated gaskets and pieces of carbon cloth that comprise a flow-field. The plate, gaskets and flow-field comprise a “plate and gasket assembly” for use in an ionomer membrane fuel cell, fuel cell stack or battery.

Abstract: The present invention comprises a thin graphite plate with associated gaskets and pieces of carbon cloth that comprise a flow-field. The plate, gaskets and flow-field comprise a “plate and gasket assembly” for use in an ionomer membrane fuel cell, fuel cell stack or battery.

Abstract: The present invention comprises a thin graphite plate with associated gaskets and a carbon cloth flow-field. The plate, gaskets and flow-field comprise a “plate and gasket assembly” for use in an ionomer membrane fuel cell, fuel cell stack or battery.

Abstract: The present invention includes a gas-permeable, hydrophilic, graphite fuel cell electrode for use in conjunction with an ionomer membrane. The fuel cell electrode includes a roughened, interstitial graphite surface enclosing micropores, upon which is deposited a catalyst for contacting an ionomer membrane. The graphite electrode has a thickness of about 40 microns.

Abstract: The present invention includes a gas-permeable, hydrophilic, graphite fuel cell electrode for use in conjunction with an ionomer membrane. The fuel cell electrode includes a roughened, interstitial graphite surface enclosing micropores, upon which is deposited a catalyst for contacting an ionomer membrane. The graphite electrode has a thickness of about 40 microns.

Abstract: The present invention includes a gas-permeable, hydrophilic, graphite fuel cell electrode for use in conjunction with an ionomer membrane. The fuel cell electrode includes a first graphite portion enclosing micropores and mesopores, terminating in a first surface for contacting fuel or oxidant. The electrode also includes a second graphite portion enclosing micropores, adjacent and integral to the first portion. The second portion terminates in a second surface, opposing the first surface, for contacting fuel or oxidant. The electrode also includes a catalyst layer which is deposited onto the second surface.

Abstract: The present invention includes a gas-permeable, hydrophilic, graphite fuel cell electrode for use in conjunction with an ionomer membrane. The fuel cell electrode includes a roughened, interstitial graphite surface enclosing micropores, upon which is deposited a catalyst for contacting an ionomer membrane. The graphite electrode has a thickness of about 40 microns.

Abstract: An improved fuel cell electrode and method for construction is disclosed wherein the electrodes are formed from adjacent layers of a porous substrate material such as carbon, and C.sub.60 carbon molecules or fullerenes. The C.sub.60 carbon molecules are arranged in face centered cubes and bind platinum atoms interspaced in the interstices of the cubes and on the C.sub.60 molecules to form a Pt/C.sub.60 layer. Lattices of platinum atoms are anchored to the individual platinum atoms of the Pt/C.sub.60 molecular layer to form a catalyst layer only several molecules thick. The resulting platinum atoms of the catalyst layer have a much greater surface area in contact with the electrolyte due to the chaotic surface area of the catalyst layer. The platinum atoms of that layer act as a catalyst for the fuel cell reaction.