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Class 148/570 - Of hollow bodies (e.g., pipe, sphere, etc.)


Subclass of Class 148 - Metal treatment
Definition: Process wherein the metal or metal alloy workpiece being
No. of patents: 65
Last issue date: 01/24/2012


1    
NumberTitleIssue Date
8101031Hollow power transmission shaft and method of manufacturing the same
A hollow shaft material is provided with, on an outer peripheral surface side thereof, for example, a movable induction heating coil wrapped therearound. While a high-frequency current with a predetermined frequency is caused to flow through the induction heating co...
01/24/2012
8034201Induction hardening method and jig used in induction hardening process
The present invention provides a method for induction hardening of a steel member having an outer ring portion and, more specifically, for induction hardening of an outer circumferential surface of the outer ring portion. The method uses two pressing members, each o...
10/11/2011
7393421Method for in-die shaping and quenching of martensitic tubular body
A process that combines tubular body pressure induced shaping at elevated temperatures with a controlled rapid quenching operation using a gaseous quenching medium in a common unit. The achievable cooling rate permits the in-die shaping and quenching of tubular stru...
07/01/2008
7334546Cylinder liner
A ductile repair cylinder liner for a diesel engine, the cylinder liner having an additional cooling groove with a parabolic varying cross-section machined into the outer surface of the cylinder liner immediately below the radially extending locating flange for the ...
02/26/2008
7317177Electric induction heat treatment of an end of tubular material
A magnetic flux concentrator is used to control the end heating of a tubular material in an electric induction heat treatment process. The magnetic flux concentrator may consist of fixed elements, or a combination of fixed and moveable elements to accommodate end he...
01/08/2008
7309073Steering system
A rack shaft has a rolling contact surface on the opposite side of rack teeth across an axis line X, and a pair of slanted surfaces extending in parallel with the axis line across the rolling contact surface. Furthermore, a roller rolling on the rolling contact surf...
12/18/2007
7282173Track bushing and method and apparatus for producing the same
Quenched layers are formed without irregularities on the inner circumferential surface of a track bushing having a small inside diameter or on the inner circumferential surfaces of two or more track bushings which are subjected to quenching in an overlapped conditio...
10/16/2007
7267616Method for making a ball-nut and method for making a ball-screw
A method for making a ball-nut includes cutting a 360-degree closed-loop surface groove in the inner-circumferential wall portion of a ball-nut body using a whirling-type internal-diameter cutting machine. The closed-loop surface groove surrounds the longitudinal ax...
09/11/2007
7220327Kick-down drum material and method of manufacturing the same
Disclosed is a material of a kick-down drum comprising fine ferrite and microdispersion spheroidized cementite for an automobile also disclosed is a method for manufacturing the kick-down drum material. The kick-down drum of this invention can greatly improve harden...
05/22/2007
7169239Solid expandable tubular members formed from very low carbon steel and method
A very low carbon steel alloy is provided for use in manufacturing tubular members such as oil country tubular goods. The tubular members may be radially expanded from at least twenty percent to forty percent. Sections or joints of casing formed from the steel alloy...
01/30/2007
7144040Bi-metallic structural component for vehicle frame assembly
A vehicle body and frame assembly includes a pair of longitudinally extending side rails having a plurality of transverse cross members extending therebetween. The cross member is a multiple piece structure, including a central portion having a pair of end portions ...
12/05/2006
7140224Moderate temperature bending of magnesium alloy tubes
A method for bending magnesium alloy tubes. The method includes heating the tube at moderate temperature in the range of about 100° C. to 200° C., and bending the tube to a bend angle or forming the tube to a desired shape. ...
11/28/2006
7024897Method of forming a tubular blank into a structural component and die therefor
A method of forming an elongated metal blank into a structural component having a predetermined outer configuration. The method includes providing a shape imparting cavity or shell section formed from a rigid material which includes an inner surface defining the pre...
04/11/2006
7010950Suspension component having localized material strengthening
A suspension component for an automobile, such as a stabilizer bar, is provided and includes at least one localized portion having a strengthened outer surface. The localized portion is positioned at a location of highest stress along the suspension component. A met...
03/14/2006
7003996Method of forming a tubular blank into a structural component and die therefor
A method of forming an elongated tubular blank into a tubular structural component having a predetermined outer configuration, the method comprising: providing a shape imparting shell formed from a low permeability, rigid material which includes an inner surface def...
02/28/2006
6948784Track pin bushing having a metallurgically bonded coating
A track pin bushing for cooperating with a track pin in an endless track has a tubular body with a metallurgically bonded wear-resistant coating and a method for forming such a coated track pin bushing is taught herein. The tubular body, formed of an iron-based allo...
09/27/2005
6921444Method of locally heating a part to reduce strength and increase ductility for subsequent manufacturing operation
A method of performing manufacturing operations on a workpiece made of a high strength alloy is disclosed in which a local area of a workpiece is heated to micro-structurally soften the local area. The local area of the workpiece becomes softened and more ductile. A...
07/26/2005
6821363Procedure for hardening at least one surface of a wall of a component and device for its execution
A procedure for hardening at least one surface (S, L) of a wall (W) of a component (T), in which the surface to be hardened (S, L) is inductively heated with at least one inductor (2), in which liquid is filled into a gap (P) between the surface to be hardene...
11/23/2004
6706127Lean manufacturing process for making ball-screw racks
A method of making a ball-screw rack bar for use in a power steering mechanism of an automotive vehicle. Transverse rack teeth are cut in an exterior surface of a first end portion of a length of a bar stock. A ball-screw thread is cut in an exterior surface of a se...
03/16/2004
6702980Annealing apparatus
An apparatus is disclosed for annealing only a portion of an elongated tubular workpiece. The apparatus includes an elongated tube dimensioned to receive the workpiece so that a first end of the workpiece together with the portion to be annealed is positi...
03/09/2004
6613164Method of forming a tubular blank into a structural component and die therefor
A method of forming an elongated tubular blank into a tubular structural component having a predetermined outer configuration, the method comprising: providing a shape imparting shell formed from a low permeability, rigid material which includes an inner ...
09/02/2003
6589373Selectively heat treated airbag canister and method for making same
A selectively heat treated canister for use in a vehicle airbag deployment system is configured to contain combustion materials and to contain gases produced from the combustion thereof. The canister includes a tubular body having a length and a longitudi...
07/08/2003
6454884Method of manufacturing a vehicle structural beam
A vehicle structural beam, such as a door intrusion beam, which possesses an elongate tubular beam part which at opposite ends is provided with mounting flanges for securement to a vehicle frame. The elongate tubular beam part and the flanges provided at ...
09/24/2002
6402862Method of hardening a bushing of a track chain
A method of hardening a work piece having (i) an outer surface, (ii) an inner surface which defines a passageway extending through the work piece, and (iii) an end. The method includes the steps of (A) advancing the work piece through a first induction co...
06/11/2002
6322645Method of forming a tubular blank into a structural component and die therefor
A method of forming an elongated tubular blank into a tubular structural component having a predetermined outer configuration, the method comprising: providing a shape imparting shell formed from a low permeability, rigid material which includes an inner ...
11/27/2001
6270595Bushing for crawler belt and method of manufacture
Crawler belt bushings and heir producing methods, with which productivity and cost performance can be improved over the carburization treatment and the induction hardening treatment. After a workpiece made from steel is heated from its outer circumferenti...
08/07/2001
6221185Method for manufacturing components by critical formation of light metal strip
The invention relates to a method for manufacturing components from critical cold forming of light metal strip, preferably naturally hard Al alloys of the AlMg or AlMg--Mn types, in which the desired component is manufactured from the strip by at least on...
04/24/2001
6217677Method for annealing stamped components
A process for forming a precision formed cup-shaped member includes stamping a blank into a cup-shaped member. The cup-shaped member is positioned onto a magnetic heating machine. A magnetic core is positioned adjacent a radius of the cup-shaped part on b...
04/17/2001
6179936Method for heat-treating a hollow cylindrical workpiece
A method for heat-treating a hollow cylindrical workpiece includes quench-hardening including a first step and a second step. In the first step, during continuously conveying the workpiece in a horizontal direction without a space between adjacent workpie...
01/30/2001
6139655Method of forming a side intrusion beam
A selectively heat treated side intrusion beam includes a beam body having a center portion heat treated and end portions not heat treated. The beam body is affixed to end brackets that couple the beam body to the automotive vehicle door. The method for f...
10/31/2000
6048417Method and apparatus for heat treating a bushing
Conventional methods for heat treating cylindrical components such as track bushings involve multiple steps. For example, many such methods consist of carburizing, cooling, induction-hardening, quenching, and tempering. The conventional methods have prove...
04/11/2000
5968661Steel sheet for heat-shrink band
A steel sheet for a heat-shrink band, which is to be thermally expanded and fitted over the outer periphery of the panel portion of a cathode ray tube, which has at least a 20% elongation at an ambient temperature and at least a 40 kg/mm2 stres...
10/19/1999
5776270Method for reforming a container and container produced thereby
A method for reforming the generally cylindrical sidewalls of aluminum containers is disclosed. The method produces highly expanded and/or contoured container sidewalls which provide a distinctive appearance in comparison with cylindrical containers havin...
07/07/1998
5672217Method for producing machine elements of steel
In a method for producing machine elements of steel having a carbon content of 0.3 to 1.1%, blanks are heated to austenitizing temperature and austenitized, quenched for the formation of martensite, heated from room temperature to a maximum tempering temp...
09/30/1997
5310975Method and apparatus for the continuous field annealing of amorphous metal transformer cores
A method and apparatus are disclosed for the continuous annealing of amorphous metal cores of the type used in electrical transformers, and wherein the cores are heated in the presence of a magnetic field. The cores are transported serially along the leng...
05/10/1994
5264053Production method for a vehicular endless track bushing
A production method for an endless track bushing wherein high-carbon low-alloy steel is selected as a bushing material, the bushing material is quench-hardened without pre-carburizing the bushing material, and then tempered. In the quench-hardening, the b...
11/23/1993
5249868Track bushing
The invention relates to a track bushing having an outer peripheral surface, an inner peripheral surface, a longitudinal bore, first and second end portions, and a center portion. The outer peripheral surface and the inner end portions have a preselected ...
10/05/1993
5192376Process for producing automobile body reinforcing steel pipe
An automobile body reinforcing steel pipe having a wall thickness-to-outer diameter ratio, t/D, defined by: 0.09-4.8×10-5 ×Lࣘt/Dࣘ0.16-6.0×10-5 ×L where L(mm) is a span of a bending load applied to the pipe. The pipe has a ten...
03/09/1993
5173133Method for annealing stapler anvils
An anvil member for use in a surgical stapler is annealed by localized heating, preferably induction heating. A shaped shielding means is used to cradle the anvil so as to expose the staple crimping portion of the anvil. The heating is performed so as to ...
12/22/1992
5140118Metal tube induction annealing method and apparatus
A metal tube induction annealing apparatus employs an induction heating enclosure having an elongated glass tube encircled by an electromagnetic coil of an induction heating system which provides an induction annealing chamber for receiving a hollow metal...
08/18/1992
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