Class 148/211 - With working, machining, or cutting

Subclass of Class 148 - Metal treatment
Definition: Process which includes a step of deforming a solid metal
No. of patents: 20
Last issue date: 10/02/2007

Number	Title	Issue Date
7276129	Surface treating methods of titanium parts Surface treating methods of a titanium part may include the steps of determining an effective thickness of a hard oxide film to be formed on a surface of the titanium part, determining an effective surface roughness of the hard oxide film, and oxidation treating the...	10/02/2007
6948649	Method of producing steel pipes, and welded pipes The high yield ratio problem intrinsic in high-strength steel pipes is solved and a method of producing a steel pipe, while securing the pipe roundness is provided. A steel pipe produced from a steel plate by forming and welding is subjected to 0.3 to 1.2% of expans...	09/27/2005
6948403	Bowed crests for milled tooth bits A method of forming milled teeth on a roller cone of a milled tooth roller cone rock bit includes shaping a crest of a chisel shaped milled tooth on the roller cone. The crest is shaped such that the crest has a convex profile from one corner to an opposite corner o...	09/27/2005
6655026	Production process for connecting rod for internal combustion engine Material for a connecting rod for an internal combustion engine is carburized and quenched, a carburized layer formed on the bearing portion is ground until the portion which exhibits the maximum compressive residual stress, and a shot-peening processing ...	12/02/2003
6458220	Case hardened steel blades for sports equipment and method of manufacture Steel alloys susceptible to case and core hardening comprise 0.05 to 0.24 weight percent carbon; 15 to 28 weight percent cobalt and 1.5 to 9.5 weight percent in nickel, small percentages of one or more additives: chromium, molybdenum, and vanadium; and th...	10/01/2002
6302971	Process for making moveable pulley half A pulley useable with a driving belt in a continuously variable transmission, including a moveable pulley half having an integral cylinder portion integrally formed therewith by plastic working. The moveable pulley half includes an axially extending hollo...	10/16/2001
6294029	Method of treating and smoothing sliding surface A surface treating and smoothing method of surface-treating and smoothing a sliding member including steps of finishing the sliding member by pressurized particle containing fluid blasting to a sliding surface with surface roughness ranging approximately ...	09/25/2001
6197125	Modification of diffusion coating grain structure by nitriding A method for improving the corrosion resistance, increasing the hardness, providing superior ductility, and reducing surface-cracking of a diffusion coating by nitriding and heating-treating the diffusion coating is disclosed. The nitriding and heat-treat...	03/06/2001
5916383	Method of shot peening a hardened metal product with shot having high hardness A method for shot peening a hard metal product that has a hardened surface. The method includes projecting shot on the hardened surface of the hard metal product. The ratio of the Vickers hardness of the shot to that of the hardened surface is 0.8-1.6, an...	06/29/1999
5868871	Method and apparatus for carburizing, quenching and tempering Method and apparatus for carburizing, quenching and tempering workpieces, by which the step of carburizing can be incorporated into a machining and manufacturing process to be performed by an on-line machining and manufacturing system as one stage thereof...	02/09/1999
5690756	Method for producing cast iron gear A method for producing cast iron gears includes the steps of heating a blank composed of cast iron and having a teeth forming part to such a temperature that at least the teeth forming part is at least austenitized, and hot rolling the teeth forming part ...	11/25/1997
5595613	Steel for gear, gear superior in strength of tooth surface and method for producing same A steel for gears consists essentially of 0.10-0.30 wt % of C, not more than 1.0 wt % of Si, not more than 1.0 wt % of Mn, 1.50-5.0 wt % of Cr, and balance including iron and impurity. A gear made by the steel forms a hardened surface layer by carbonizing...	01/21/1997
5556484	Method for reducing abnormal grain growth in Ni-base superalloys A method of forging Ni-base superalloys is described which avoids the growth of abnormally large grains in the surface region of a forged article. The method involves forging and/or annealing a Ni-base superalloy in a carburizing environment. Forging and/...	09/17/1996
5100483	Method of case hardening ferrometallic parts A method of case hardening ferrometallic parts that avoids the use of protective coatings or shields is provided. The process comprises the steps of a) carburizing the entire part, b) machining the carburized part to form first and second surface regions ...	03/31/1992
5085713	Method of forming a partially carburized starter output shaft A rotary output shaft for a vehicle starter motor having a planet gear speed reducing device is formed by forging a steel blank to form a product having a shape similar to the rotary output shaft but having slightly larger outer dimensions, by subjecting ...	02/04/1992
4622080	Gun barrel, mandrel and related processes A gun barrel which is either smooth or has lands and grooves wherein the grooves are both wider and deeper at the chamber than at the muzzle. A mandrel for producing the gun barrel. Processes for producing the gun barrel including steps of heating, quench...	11/11/1986
4403639	Stud arrangement on chains for motor vehicles, and a method of producing such chains A stud arrangement on casehardened studded chains for motor vehicles, wherein the studs consist of a steel body which is permanently welded to a chain link and provided with a centrally disposed hard metal pin. The hard metal pin is inserted into the stee...	09/13/1983
4373973	Method of manufacture of high performance gears A method for forming gear teeth of a high performance gear is accomplished by shaping the carburized gear tooth surface while the gear blank is held at a uniform temperature in the metastable austenitic condition above the start of the martensitic transfo...	02/15/1983
4123294	Method of separating ferritic steel or ductile iron from certain nonferrous metals A method is disclosed for treating scrap metal chips and turnings containing a valuable metal layer of silver, gold, or copper and a ductile layer of ferritic steel or ductile iron to recover the valuable metal. The chips and turnings are treated by carbu...	10/31/1978
4052233	Method for gas-and fluid-tight sealing of boreholes which are threadless and under pressure, and are mounted in a hardenable raw material A method of sealing non-threaded boreholes with a preferably spherical sealing member comprising pressing the sealing member into the borehole in an unhardened raw material hardenable by nitridation, wedging the lip of the borehole and hardening the mater...	10/04/1977

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Class 148/211 - With working, machining, or cutting