Bizarre Patents
An aircraft having vertical takeoff and landing capability provided with at least first and second laterally extending paddle wheels rotatable on a central axis perpendicular to the longitudinal axis of the aircraft fuselage and between its nose and tail.
PatentStorm News
Make the Most of Our Site
See this month's Top Inventors and Most Cited Patents.
Stay on top of the latest innovations by subscribing to an RSS feed.
Registered users: Manage your profile.
| Number | Title | Issue Date |
| 7972449 | Corrosion resistant metal composite for electrochemical devices and methods of producing the same A metal composite for use in electrochemical devices is disclosed. The metal composite comprises a stainless steel interior component and a deposited nitrided metal exterior layer, wherein the nitrided exterior layer has lower electric contact resistance and greater... | 07/05/2011 |
| 7438769 | Process for diffusing titanium and nitride into a material having a coating thereon A method for diffusing titanium and nitride into a base material having a coating thereon using conventional surface treatments or coatings. The method generally includes the steps of providing a base material having a coating thereon; providing a salt bath which in... | 10/21/2008 |
| 7326306 | Method for producing nitriding steel In the present invention, after a nitriding process is performed on a steel, a passivating process in which the steel is heated under an atmosphere containing oxygen is performed. The heating condition of the passivating process is within a range surrounded by (100Â... | 02/05/2008 |
| 7247403 | Surface modified stainless steels for PEM fuel cell bipolar plates A nitridation treated stainless steel article (such as a bipolar plate for a proton exchange membrane fuel cell) having lower interfacial contact electrical resistance and better corrosion resistance than an untreated stainless steel article is disclosed. The treate... | 07/24/2007 |
| 7204005 | Manufacturing method of endless metal belt and manufacturing apparatus of endless metal belt A manufacturing method of an endless metal belt having metal rings built up and differing in circumference, includes the following steps of: a first circumference correction step of expanding each of the metal rings; and a second circumference correction step of exp... | 04/17/2007 |
| 6966954 | Spall propagation properties of case-hardened M50 and M50NiL bearings A roller bearing that provides ball and roller bearing elements comprised of M50 steel and M50NiL steel having surface hardnesses above 60 HRC, and in the range of 65-72 HRC. The hardness in the surface region is achieved by nitriding the surface to achieve a high h... | 11/22/2005 |
| 6878218 | High strength gear and method of producing the same A high strength gear is provided which comprises a base metal of an iron-base alloy, the base metal being carburized or carbonitrided and having a tooth surface, and a coating containing Fe nitride and/or Fe carbonitride, formed on the tooth surface. A method of for... | 04/12/2005 |
| 6663724 | Molten salt composition for use in manufacturing laminated rings A laminated ring for use as a belt in transmitting power in a continuously variable transmission is produced by welding opposite ends of a sheet of maraging steel to produce a plurality of rings, and rolling said rings to a predetermined length. The rings... | 12/16/2003 |
| 6379473 | Method of manufacturing laminated ring using molten salt composition A laminated ring for use as a belt in transmitting power in a continuously variable transmission is produced by welding opposite ends of a sheet of maraging steel to produce a plurality of rings, and rolling said rings to a predetermined length. The rings... | 04/30/2002 |
| 6361621 | Process for the inhibition control in the production of grain-oriented electrical sheets The production of grain-oriented electrical steel sheets is disclosed wherein grain growth in the steel is inhibited by a method comprising the regulation of the content of sulfur and manganese in the steel strp and the cold rolled strip is continuously n... | 03/26/2002 |
| 6361620 | Process for the inhibition control in the production of grain-oriented electrical sheets In the production of grain-oriented electrical steel strip, the grain growth inhibition is controlled by balancing the copper, aluminum and carbonium content in order to control the type and quantity of precipitated second phases and obtain optimum grain ... | 03/26/2002 |
| 6325866 | Process for the production of grain oriented silicon steel sheet A process for the production of grain oriented silicon steel sheet which provides an optimization of the production of conventional, grain oriented silicon steel strips, by the use of an appropriate synergistic combination of the composition levels of som... | 12/04/2001 |
| 6284062 | Member for immersion in hot dip galvanizing bath and method for producing the same A member used in contact with a hot dip galvanizing bath, such as a sinker roll, a support roll or a bearing, is produced by nitriding stainless steel to form a nitride layer and a nitrogen-diffused layer on the surface thereof. The member used in contact... | 09/04/2001 |
| 6179932 | Motor rotary shaft and manufacturing method thereof A motor rotary shaft according to the present invention is constructed only at the surface layer of a journal portion with a hard nitride layer, so that the resultant motor rotary shaft is available at a low cost, not so heavy and excellent in durability ... | 01/30/2001 |
| 6180189 | Method and apparatus for aluminum nitride coating of a contact surface, especially a cylinder contact surface of a crankcase made of an aluminum basic alloy The invention relates to a method for aluminum nitride coating of cylinder contact surfaces (ZL) of a crankcase (KG) made of an aluminum basic alloy where the aluminum nitride coating is performed by surface nitriding of the aluminum basic alloy, and the ... | 01/30/2001 |
| 6007871 | Method of surface treatment for a fishing tackle part made of alloy steel containing chrome The object of the present invention is to provide a simple, inexpensive method of surface treatment capable of improving the strength and smoothness of fishing tackle parts made of alloy steel containing chrome. The method of surface treatment for a fishi... | 12/28/1999 |
| 5846340 | Process for preparing a heat treatment atmosphere and method for regulating said process Process for the preparation of a heat treatment atmosphere by a catalytic reaction in a catalytic reactor including an inlet and an outlet between a first gas mixture comprising oxygen and a second gas mixture comprising a hydrocarbon for the purpose of s... | 12/08/1998 |
| 5735970 | Apparatus and process for the production of a neutral atmosphere The process and system according to the present invention are used for the production of an atmosphere. The process involves feeding an impure nitrogen stream, combined with a hydrocarbon to a catalytic reactor having a non-noble metal catalyst to produce... | 04/07/1998 |
| 5650022 | Method of nitriding steel A method of nitriding steel which comprises reacting the steel surface with nitrogen so as to form a hard nitrided layer, and, prior to nitriding, holding steel under a gas atmosphere containing fluorine compound gas or fluorine gas and also containing ai... | 07/22/1997 |
| 5599404 | Process for forming nitride protective coatings A substrate material to be coated with either a nitride, carbide, or oxide contains a small percent of a specific reactive element, like titanium, which forms very stable nitrides, carbides, or oxides. The material also contains larger percentages of elem... | 02/04/1997 |
| 5342455 | In-situ generation of heat treating atmospheres using a mixture of non-cryogenically produced nitrogen and a hydrocarbon gas A process for generating in-situ low-cost atmospheres suitable for annealing and heat treating ferrous and non-ferrous metals and alloys, brazing metals, sealing glass to metals, and sintering metal and ceramic powders in a continuous furnace from non-cry... | 08/30/1994 |
| 5340412 | Method of fluorinated nitriding of austenitic stainless steel screw An austenitic stainless steel screw having a nitride hard layer on its surface to prevent corrosion on parts of the screw such as a screw head which is in contact with the environment by removing a portion of the nitride hard layer to expose austenitic st... | 08/23/1994 |
| 5259893 | In-situ generation of heat treating atmospheres using a mixture of non-cryogenically produced nitrogen and a hydrocarbon gas A process for generating in-situ low-cost atmospheres suitable for annealing and heat treating ferrous and non-ferrous metals and alloys, brazing metals, sealing glass to metals, and sintering metal and ceramic powders in a continuous furnace from non-cry... | 11/09/1993 |
| 5254181 | Method of nitriding steel utilizing fluoriding This invention relates to a method for forming a uniform, deep nitride layer on and in steel works at low cost, wherein a steel work is fluorided in heated condition in an atmosphere of a mixed gas composed of fluorine gas and inert gas and, then, nitride... | 10/19/1993 |
| 5252145 | Method of nitriding nickel alloy A method of nitriding nickel alloy comprising steps of holding nickel alloy in an atmosphere of fluorine- or fluoride-containing gas in a heated condition and holding the fluorinated nickel alloy in a nitriding atmosphere in a heated condition to provide ... | 10/12/1993 |
| 5242509 | Process of the production of an atmosphere for the thermal treatment of metals and thermal treatment apparatus The thermal treatment atmosphere is obtained by catalytic reaction of an impure mixture of nitrogen, advantageously obtained by permeation or adsorption, and hydrocarbon, the catalytic reaction being carried out at a temperature between 400° and 900° C.... | 09/07/1993 |
| 5226975 | Plasma nitride chromium plated coating method A method of forming a wear-resistant coating for internal combustion engine component parts which allows the part to remain dimensionally stable under severe engine operating conditions is provided. The coating is formed by a two step method. First, the e... | 07/13/1993 |
| 5221369 | In-situ generation of heat treating atmospheres using non-cryogenically produced nitrogen A process for generating in-situ low-cost atmospheres suitable for annealing and heat treating ferrous and non-ferrous metals and alloys, brazing metals and ceramics, sealing glass to metals, and sintering metal and ceramic powders in a continuous furnace... | 06/22/1993 |
| 5013371 | Method of nitriding steel Steel is nitrided first by treating the steel to be nitrided with NF3 at elevated temperature to form a fluorinated layer on the steel, and then the steel is nitrided by heating in a nitriding atmosphere.... | 05/07/1991 |
| 4119444 | Pack nitriding process for low alloy steel A method of nitriding metal parts is disclosed. A preferred mode requires burying the metal part to be treated in a body of vermiculite or other porous media containing urea or other suitable nitriding agent. Prior to burying, a controlled amount of an aq... | 10/10/1978 |
