Abstract: A stable electrolyte composition for use in a lithium anode electrochemical cell which includes an electrolyte comprising lithium hexafluroarsenate dissolved in methyl formate. A stabilizing amount of lithium tetrafluroborate is included. Also included is a stabilizing amount of a lithium alloy. These alloys typically have a Mohs hardness of greater than 0.7. Typical lithium alloys include metals selected from the group consisting of aluminum, calcium, magnesium, silicon, zinc, and mixtures thereof.

Abstract: An electrolyte solution for use in rechargeable electrochemical cells having nickel substrate as working electrode and lithium counter electrode and an electrochemically active amount of LiAsF.sub.6 dissolved in dimethyl sulfite and a rechargeability improving amount of lithium carbonate, Li.sub.2 CO.sub.3, contained therein to form electrolyte solution, said solution being capable of passing through a molecular sieve of less than about 5 Angstroms has been developed. A preferred embodiment includes a one molar solution of the LiAsF.sub.6 and from about 0.07 to 0.14 molar solution of Li.sub.2 CO.sub.3. The electrolyte solution has 85-90 percent efficiency for cycling lithium on nickel substrate.

Abstract: The invention comprises a plurality of intrusion detection transducers connected together wherein each transducer has a central core extending along an axis and having a length along that axis defined as XL where X is an even number of at least two and L is a given length. At least one sensing winding wire is wound around the core to provide a first-hand winding of L/2 length, X-1 number of windings of length L, and a second end winding of L/2 length, each adjacent winding being a reverse polarity to the next adjacent winding. Means are provided to connect each transducer to the adjacent transducers such that the first end of one transducer connects to the second end of the adjacent transducer.

Abstract: Improvements are disclosed in the method of electroless deposition of a metal on a nonconductive surface wherein the surface is sequentially contacted with a tin salt solution, a palladium salt solution, and an electroless plating bath containing said metal. The improvement relates to preparing the surface to produce an unbroken layer of water adhering thereto upon dipping said surface in deionized water. The improvement further contemplates removing the surface from the electroless plating bath after formation of the visible amount of metal, inspecting the surface for imperfections, removing the metal, and recleaning the surface to remove imperfections. Finally, the activation steps are repeated followed by contacting the surface with an electroless plating bath to plate the desired quantity of metal thereon in a manner wherein uniformity and adhesion are improved.

Abstract: The use of lithium hexafluroarsenate dissolved in acetronitrile as an electrolyte in a reserve electrochemical cell having a lithium anode, a sulfur dioxide depolarizer and a means for maintaining the electrolyte and depolarizer remote from the anode prior to activation.

Abstract: A temperature detecting device comprising a protective tube means having a flat inner bottom surface and a top opening end with a resilient metallic member positioned inside the tube for holding a thermistor. The resilient metallic member has a bottom surface essentially parallel to the bottom surface of the protective tube means which is in substantial surface contact with that bottom surface. The metallic member further has a remaining portion essentially perpendicular to the bottom portion and slightly longer than the distance between the bottom surface and the top opening of the tube means. A thin layer of metal, softer than the metal from which the member is made, is positioned between the bottom portion member and the bottom surface of the tube. The thermistor is mounted on the remaining portion of the member.

Abstract: Mercury cadmium telluride carrier concentration can be adjusted by having a quantity of lithium dispersed therein in an amount sufficient to measurably increase the acceptor concentration of the semiconductor. Methods of forming the acceptor doped mercury cadmium telluride include diffusion of a quantity of lithium into an already existing body of mercury cadmium telluride. Formation of NP junctions and P-P+ regions are disclosed using the compositions and methods of the present invention.

Abstract: Mercury cadmium telluride having a quantity of an acceptor material selected from Group VA of the Periodic Table, consisting of nitrogen, phosphorus, arsenic and antimony and bismuth dispersed therein, preferably in an amount sufficient to measurably increase the acceptor concentration of the semiconductor. Most preferred are phosphorus, arsenic and antimony. Also disclosed are junctions formed by two adjacent regions of mercury cadmium telluride in which one of the regions contains an acceptor concentration increasing amount of nitrogen phosphorus, arsenic, bismuth or antimony. A method is disclosed which permits diffusion of these additives into a body of already formed mercury cadmium telluride.

Abstract: Mercury cadmium telluride is described having a quantity of a silicon dispersed therein in an amount to measurably increase the donor concentration of the mercury cadmium telluride. Silicon has been found to substitute for metal, either mercury or cadmium, in the mercury cadmium telluride crystal. Doping of a region of mercury cadmium telluride with silicon can produce a PN junction when the adjacent region is P-type, and an N-N+ type junction when the adjacent region is N-type.

Abstract: Mercury cadmium telluride is disclosed having a quantity of a halogen donor material preferably selected from the group consisting of bromine and iodine dispersed therein in an amount sufficient to measurably increase the donor concentration. Also disclosed are PN junctions formed using this donor material. A method of introducing the donor material is additionally disclosed.

Abstract: A method of adjusting donor concentration in a body of mercury cadmium telluride comprising the steps of contacting the mercury cadmium telluride with a quantity of donor material selected from the group consisting of gallium and gallium alloys containing up to 3% of aluminum, tin or cadmium and heating the body at a temperature of at least 200.degree. C for a sufficient time to diffuse the donor material within the body. The donor material is placed in contact with the body of mercury cadmium telluride by immersing the body in a molten quantity of the donor material to wet the surface thereof. Further included is the step of removing any undistributed donor material after heating. Also disclosed is a method of adjusting the donor concentration in the first region of mercury cadmium telluride with respect to a second adjacent region by practicing the process of this invention on the first region only.

Abstract: A method of adjusting the donor concentration in a body of mercury cadmium telluride, or in regions of a body, comprising the steps of contacting the donor material region with a donor material of either aluminum or silicon and heating the body at a temperature of at least 550.degree. C for sufficient time to diffuse the donor material into the body. In a preferred embodiment, the heating is done in the presence of a source of mercury vapor pressure other than the body of semiconductor.

Abstract: Mercury cadmium telluride is described having a quantity of a silicon dispersed therein in an amount to measurably increase the donor concentration of the mercury cadmium telluride. Silicon has been found to substitute for metal, either mercury or cadmium, in the mercury cadmium telluride crystal. Doping of a region of mercury cadmium telluride with silicon can produce a PN junction when the adjacent region is P-type, and an N-N+ type junction when the adjacent region is N-type.

Abstract: Mercury cadmium telluride carrier concentration can be adjusted by having a quantity of lithium dispersed therein in an amount sufficient to measurably increase the acceptor concentration of the semiconductor. Methods of forming the acceptor doped mercury cadmium telluride include diffusion of a quantity of lithium into an already existing body of mercury cadmium telluride. Formation of NP junctions and P-P+ regions are disclosed using the compositions and methods of the present invention.

Abstract: Mercury cadmium telluride is disclosed having a quantity of a halogen donor material preferably selected from the group consisting of bromine and iodine dispersed therein in an amount sufficient to measurably increase the donor concentration. Also disclosed are PN junctions formed using this donor material. A method of introducing the donor material is additionally disclosed.

Abstract: A thermostat for mounting on a wall, including a base having an aperture for mounting on the wall, a temperature sensing means mounted on the base and adapted to move with changes in temperatures, and switching means mounted on the base and adapted to operate when the temperature sensing means reaches a predetermined temperature. Also included are restraining means removably attached to the switching means and adapted to restrain the switching means during shipment of the thermostat from the factory to the place of installation, the restraining means being positioned in the aperture to prevent mounting of the base to the wall without removal of the restraining means from the switching means.

Abstract: A method of preparing photodetector array elements from a body of photodetector material wherein conductive layers of a metal are formed on selected portions of a substrate, the conductive layers are coated with a photoresist material, an adhesive layer is deposited on the photoresist and the remaining substrate, a body of photodetector material is bonded to the adhesive, and individual photodetector elements are delineated from the body to form the elements of the array and to expose the edges of the photoresist material, and the photoresist layer and material deposited thereon are removed.

Abstract: A method for cutting lithium metal into a plurality of pieces, and a device for accomplishing the method, are disclosed, comprising the steps of positioning a quantity of lithium metal at a predetermined position between an anvil means and a cutting means which are positioned in operating relationship with each other. A thin flexible film, preferably a plastic, is interposed between the blade and the lithium such that when the blade is forced against the anvil with sufficient force to cut the lithium, the film prevents contact of the blade with the lithium. Indexing of the lithium and the film after each cut permits repetitive cutting to provide a plurality of pieces from the lithium metal stock.

Abstract: The terminal pin assembly for a battery including an elongated cylindrical pin having a first end for extension exterior of the battery and a second end for extension interior of the battery where the second end has a larger cross-sectional area than the first end. Header means are included forming one end of the battery and defining an opening through which the pin extends such that the opening has a diameter larger than the first end of the pin. Bracket means are mounted on the interior side of the surface of the header means and extend inward from the surface, with the bracket means having a diameter larger than the opening in the header means. Sealing means are provided and are mounted on the exterior end of the pin and have a diameter essentially equal to the bracket means, whereby the bracket means is forceably enclosed about the sealing means.

Abstract: A self-erecting structure, including a plurality of unexpanded convoluted bellows means joined together to define an enclosed ring having an interior closed path, along with means for expanding the path. The means for expanding the path include a quantity of propellant contained within the interior closed path in an amount capable of expanding the plurality of bellows to significantly increase the size of the ring upon ignition of the propellant and ignition means for igniting the propellant upon receipt of a command.