# US 8,919,166 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 8,919,166 B2 - Document ID: US8919166B2 - Status: Granted - Kind: B2 - Application number: 13/724,667 - Filed: 2012-12-21 - Published: 2013-05-16 - Granted: 2014-12-30 - Earliest claimed: 2011-02-25 - Assignees: Szuba Consulting, Inc.; Value Extraction LLC - Applicants: Szuba Consulting, Inc.; Value Extraction LLC - Inventors: Joseph Szuba - Web page: https://patentgrep.com/patent/US8919166B2 ## 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 minor 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 assembly, comprising the steps of: providing a tube defining an annular wall; roll forming said annular wall of said tube radially inwardly with a plurality of rollers toward said longitudinal axis of said annular wall at spaced locations along said tube thereby converting said tube to a plurality of interconnected preforms having contours of varying diameter being complementary to a plurality of said housings while maintaining open ends in said perform defined by said tube; separating each said preform from said tube then receiving a mandrel in one of said open ends of each of said preforms and cold working said contours defined by said preform into a desired shape of said housing on the mandrel, and using said mandrel to deform a portion of an inner surface of said preform into features complementary of said housing; and disposing components of an assembly through one of said open ends of said housing with some said components engaging said features deformed into said inner surface of said housing when cold working said preform. ### Claim 2 (depends on 1) The method set forth in claim 1, wherein said step of roll forming said annular wall of said tube radially inwardly is further defined by compressing said tube thereby forming reduced diameter portions and large diameter portions. ### Claim 3 (depends on 2) The method set forth in claim 2, further including the step of cutting the tube perpendicular to its longitudinal axis generally midway through a reduced diameter portion and a large diameter portion, thereby forming a plurality of minor image performs, each having a reduced diameter open end and a large diameter open end. ### Claim 4 (depends on 1) The method set forth in claim 1, further including the step of forming a lip in at least one of said open end of said preform thereby defining a reduce diameter open end. ### Claim 5 (depends on 1) The method set forth in claim 1, wherein said step of deform a portion of an inner surface of said preform into features is further defined by forming a thickened portion at or proximate to said feature. ### Claim 6 (depends on 1) The method set forth in claim 1, wherein said step of cold working said preform into a desired shape of said housing on the mandrel is further defined by increasing the strength of a metal forming said housing. ### Claim 7 (depends on 1) The method set forth in claim 1, wherein said step of providing a tube is further defined by providing a tube having a longitudinally welded seam. ### Claim 8 (depends on 1) The method set forth in claim 1, wherein said step of providing a tube is further defined by providing a sheet of metal and rolling the metal into a said tube. ### Claim 9 (depends on 1) The method set forth in claim 1, wherein said step of providing a tube is further defined by providing a sheet of metal and rolling the metal into a said tube using crowned rollers providing increased thickness portions of said tube. ### Claim 10 (depends on 1) The method set forth in claim 1, wherein said step of disposing components of an assembly through one of said open ends of said housing is further defined by disposing gears through one of said open ends of said housing.