# US 8,356,506 B2 · Method of forming industrial housings > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 8,356,506 B2 - Document ID: US8356506B2 - Status: Granted - Kind: B2 - Application number: 13/404,076 - Filed: 2012-02-24 - Published: 2012-08-30 - Granted: 2013-01-22 - Earliest claimed: 2011-02-25 - Assignees: Szuba Consulting, Inc.; Value Extraction LLC - Applicants: Joseph Szuba - Inventors: Joseph Szuba - Web page: https://patentgrep.com/patent/US8356506B2 ## CPC - B21B 17/02: with mandrel, {i.e. the mandrel rod contacts the rolled tube over the rod length}(B21B17/08 takes precedence) - B21D 17/04: by rolling - B21D 22/16: over shaping mandrels or formers - B21H 7/00: Making articles not provided for in the preceding groups, e.g. agricultural tools, dinner forks, knives, spoons (nails, pins B21G3/30) - B21K 1/26: housings or supporting parts, e.g. axle housings, engine mountings - B21K 21/16: Remodelling hollow bodies with respect to the shape of the cross-section (remodelling end portions only B21K21/12) - F16H 48/00: Differential gearings (cooling or lubricating of differential gearing F16H57/04) - F16H 48/08: comprising bevel gears - F16H 48/40: characterised by features of the rotating cases - Y10T 29/49826: Assembling or joining - B21B: ROLLING OF METAL (auxiliary operations used in connection with metal-working operations covered in B21, see B21C; bending by rolling B21D; manufacture of particular objects, e.g. screws, wheels, rings, barrels, balls, by rolling B21H; pressure welding by means of a rolling mill B23K20/04) - B21D: WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL (working or processing of wire B21F) - B21H: MAKING PARTICULAR METAL OBJECTS BY ROLLING, e.g. SCREWS, WHEELS, RINGS, BARRELS, BALLS (essentially from sheet metal B21D) - B21K: MAKING FORGED OR PRESSED METAL PRODUCTS, e.g. HORSE-SHOES, RIVETS, BOLTS OR WHEELS (making particular articles by working sheet metal without essentially removing material B21D; processing wire B21F; making pins, needles or nails B21G; making particular articles by rolling B21H; forging machines, pressing machines, hammering machines, in general B21J; making chains B21L; plating B23K) - F16H: GEARING - Y10T: TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION ## Abstract A method of forming a housing which includes roll forming a steel tube radially inwardly with a plurality of rollers each having a rolling axis parallel to the longitudinal axis of the tube, the rollers compressing the tube and forming reduced diameter portions and enlarged diameter portions. The method then includes cutting the tube perpendicular to the longitudinal axis generally midway through an enlarged diameter portion and a reduced diameter portion, forming a plurality of mirror image preforms. Finally, the method includes cold working the preforms into the desired shape of the housing and increasing the strength of the steel at least 15% and forming a housing member having enlarged diameter open end and a reduced diameter open end. ## Claims ### Claim 1 A method of forming a housing, comprising the following steps: roll forming a steel tube radially inwardly with a plurality of rollers each extending perpendicular to a longitudinal axis of the tube, each roller having a rolling axis parallel to the longitudinal axis of the tube, the rollers compressing the tube and forming reduced diameter portions and enlarged diameter portions in the tube; cutting the tube perpendicular to its longitudinal axis generally midway through an enlarged diameter portion and a reduced diameter portion, thereby forming a plurality of mirror image performs each having an enlarged diameter open end and a reduce diameter open end; receiving a mandrel in the enlarged diameter open end of the preforms and cold working the preforms into the desired shape of the housing on the mandrel and increasing the strength of the steel at least 15%, forming a housing member having an enlarged diameter open end and a reduced diameter open end portion; and disposing components of an assembly through the open enlarged diameter end of the housing and the reduced diameter portion retaining the components in the housing. ### Claim 2 (depends on 1) The method as defined in claim 1, wherein the steel tube is formed from a low to medium carbon steel. ### Claim 3 (depends on 1) The method as defined in claim 1, wherein the steel tube is formed from a high strength low alloy steel. ### Claim 4 (depends on 1) The method as defined in claim 1, wherein the steel tube includes a longitudinally welded seam and the cold working increases the strength of the tube and the resultant housing at least 20%. ### Claim 5 (depends on 1) The method as defined in claim 1, wherein the steel tube includes a longitudinally welded seam formed by rolling a steel plate into a tube using crowned rollers forming a tube having an arcuately increased thicker portion. ### Claim 6 (depends on 1) The method as defined in claim 1, wherein the cold working of the tube includes receiving a mandrel through the enlarged diameter open end portion of the preforms and the preforms are shaped to the shape of the mandrel with a plurality of rollers. ### Claim 7 (depends on 1) The method as defined in claim 1, wherein the method includes retaining the components in the housing by a separate member retained over the enlarged diameter open end of the housing. ### Claim 8 A method of forming a component, comprising the following steps: roll forming a steel tube having a longitudinally extending weld with a plurality of rollers extending perpendicular to a longitudinal axis of the tube, each roller having a rolling axis parallel to the longitudinal axis of the tube, the rollers compressing the tube and forming reduced diameter portions and enlarged diameter portions generally equal to the diameter of the tube; cutting the tube perpendicular to its longitudinal axis generally midway through an enlarged diameter portion and a reduced diameter portion and an enlarged diameter open end portion, thereby forming a plurality of mirror image preforms; and receiving a mandrel through the enlarged diameter open end of the preforms and cold working the preforms into a desired shape of the article by rolling the preforms over the mandrel, thereby increasing the strength of the steel at least 20% and forming the desired shape of the article having an enlarged diameter open end and a reduced diameter portion. ### Claim 9 (depends on 8) The method as defined in claim 8, wherein the cold working of the preforms increases the strength of the steel at least 25%. ### Claim 10 (depends on 8) The method as defined in claim 8, wherein the steel tube is formed from a low to medium carbon steel.