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| Number | Title | Issue Date |
| 8091397 | Compact roll grooving apparatus with adjustable mounting and extended backup roller shaft A roll grooving apparatus has a back-up roller, a grooving roller positioned vertically below the back-up roller, and a linear actuator positioned below the grooving roller. The linear actuator drives the grooving roller linearly toward the backup roller. A drive is... | 01/10/2012 |
| 6993949 | Power or manually operated pipe grooving tool A pipe grooving tool is disclosed having a housing on which a back-up roller and a grooving roller are rotatably mounted. The grooving roller is pivotably movable toward the back-up roller and has a raised tool surface engageable with the outer surface of the pipe. ... | 02/07/2006 |
| 6957816 | Loop seal for knife gate valve A seal for use with a knife gate valve is disclosed, the seal having a loop to which is attached an axially facing sealing lobe. A sealing surface is positioned on the sealing lobe, the sealing surface having an axially projecting leading edge and flanking annular s... | 10/25/2005 |
| 6935152 | Orbiting roller groover for pipe An apparatus and method for forming grooves in a pipe for receiving mechanical pipe clamps are disclosed. The apparatus includes a holding fixture for securing the pipe and a carriage rotatably mounted on the holding fixture. Two arms are pivotably mounted on the ca... | 08/30/2005 |
| 6918278 | Pipe preparation tool adaptable for different diameter pipes A tool for preparing pipes for coupling using mechanical couplings is disclosed. The tool has a movable roller pivotally attached to a body, a tapered roller rotatably attached to the body and a plurality of tool rollers rotatably mounted on a carriage slidable with... | 07/19/2005 |
| 6708545 | Roll grooving apparatus Hydraulically operated roll grooving apparatus comprises vertically oriented idler and backup grooving rolls each rotatable about a corresponding roll axis, a fluid actuator for displacing the idler roll toward the backup roll, a manually operated pump for supplying... | 03/23/2004 |
| 6688150 | Roll grooving apparatus Roll grooving apparatus for rolling a circumferential groove in a pipe comprises a first support rotatably supporting a first grooving roll, a second support rotatably supporting a second grooving roll and being displaceable relative to the first support ... | 02/10/2004 |
| 6477878 | Machine for producing corrugated wheel spacers A machine for producing a corrugated wheel spacer for use between tandem truck wheels includes top and bottom corrugated rollers which are driven in synchronism with an annular spacer blank therebetween to corrugate the blank. The top roller is suspended ... | 11/12/2002 |
| 6408664 | Hydraulic positioning assembly for cold rolling tubes A cold rolling apparatus includes a forming roll which applies a forming load to a tube when cold rolling the tube, and a hydraulic positioning assembly including a positioning roller disposable for initial contact with a tube surface and arranged to appl... | 06/25/2002 |
| 6240761 | Tool controlling apparatus A tool controlling apparatus includes a position controlling unit and a torque controlling unit for carrying out the conversion between the position control and the torque control of the tool for pushing the work, and the conversion of the torque in the t... | 06/05/2001 |
| 6125677 | Apparatus for processing battery case can, a battery, and a manufacturing method of battery To present a processing apparatus capable of forming an annular support portion for mounting a sealing plate on an elliptical battery case can at high precision and high productivity, and a structure of an elliptical battery using an elliptical battery ca... | 10/03/2000 |
| 6089065 | Process and arrangement for the cold forming of hollow workpieces A process and device for manufacturing cylindrical hollow bodies out of a blank through cold forming using roll cylinders is provided. The axes of the roll cylinders in this process are essentially adjusted parallel to the axis of the workpiece and execut... | 07/18/2000 |
| 5979202 | Method and apparatus for making pipe line steel grooved-end fittings A method for making a grooved-end pipe fitting from standard pipe includes the steps of bending length of pipe on a press mandrel to form a curved pipe segment with an oval cross section and further working the curved pipe segment in a die to produce tang... | 11/09/1999 |
| 5882123 | Roll-formed bearing race and process for producing the same A double cup for a tapered roller being has a concave intervening surface between the small diameter ends of its tapered raceways. The cup is produced by roll forming a tubular blank at ambient temperature into a ring form having the raceways and the conc... | 03/16/1999 |
| 5778715 | Cold rolling positioning roller assembly A positioning roller assembly for use when cold rolling a tube includes first and second positioning rollers disposed for initial contact with a tube surface, and a mechanism for maintaining contact of the first and second positioning rollers relative to ... | 07/14/1998 |
| 5704240 | Method and apparatus for forming threads in metal containers A methods for forming threads in the neck portion of a can made of thin gauge, hard temper metal which minimizes stretching of the metal in the neck portion. The method employs a grooved arbor and roller having a single thread lead around less than 360° ... | 01/06/1998 |
| 5450738 | Method and apparatus for forming piping element connections having multiple outward steps An apparatus for forming a piping element connection with multiple outward steps has first and second rollers, a driver for the second roller, and a positioning roller. The first roller rotates about a first axis, with first and second upper surfaces of r... | 09/19/1995 |
| 5419032 | Method for forming a container ring An apparatus for forming a container closure includes at least one driving wheel, at least one biasing wheel, a first bending wheel and a second bending wheel. The biasing wheel operates to hold a metal band having a first edge and a second edge against t... | 05/30/1995 |
| 5193376 | Machine and method for repairing damaged grain aeration pipes The method of straightening deformed hollow lightweight metal pipe by threading the deformed pipe over the uppermost of three rolls where the upper roll is positioned in overlapping condition with two horizontal lower rolls. The rolls are then moved so th... | 03/16/1993 |
| 4891962 | Roll forming notches in a thin-wall power transmission member An apparatus and method for forming a power transmission member from a thin-walled blank, the apparatus including a pair of dies (84) having opposed work surfaces, and a mandrel (50) positioned between the work surfaces of the dies (84) for receiving a bl... | 01/09/1990 |
| 4869088 | Ring shaping apparatus This invention relates to a ring shaping apparatus for cold rolling workpieces in ring form into a desired shape. The workpieces include a bearing in which an inner race, an outer race or a pillow is to be formed, a cage and a sleeve. The apparatus compri... | 09/26/1989 |
| 4819468 | Roll forming notches in a thin-wall power transmission member An apparatus and method for forming a power transmission member from a thin-walled blank, the apparatus including a pair of dies (84) having opposed work surfaces, and a mandrel (50) positioned between the work surfaces of the dies (84) for receiving a bl... | 04/11/1989 |
| 4790166 | Round collar maker A round collar maker having as one of its sections a conventional combination rotary machine, the collar maker having a pair of rollers on axles of the machine and having a guide provided with a cylindrical circumference which latter is arranged about an ... | 12/13/1988 |
| 4756179 | Mandrell for flanging and splining thin-walled members A mandrel of the type for making a transmission member (42) from a thin-walled blank. A toothed mandrel (40) is rotatably supported between a pair of dies and received within a sleeve portion (46), flatly engaging an annular end wall (44) of the member. T... | 07/12/1988 |
| 4741191 | Method for splining and flanging thin-walled members A method for forming a power transmission member (42) from a thin-walled blank. The apparatus (10, 110, 210) comprises a pair of opposed toothed dies (26, 30; 112, 114; 138, 140). Initial opposed movement of dies (112, 114; 138, 140) from a loading positi... | 05/03/1988 |
| 4677836 | Apparatus for flanging and splining a thin-walled power transmission member Apparatus for flanging and splining a thin-walled blank to make a splined and flanged power transmission member (42). A toothed mandrel (40) is rotatably supported between a pair of toothed dies (26,30; 112,114; 138,140). The dies and mandrel have chamfer... | 07/07/1987 |
| 4672833 | Method and apparatus for the two-step rolling of rings Method and apparatus are provided for the two-step rolling of predominantly profiled rings, for example, anti-friction bearing rings, with diameter enlargement in two rolling steps in one working sequence for the considerable reduction of the stress on th... | 06/16/1987 |
| 4468187 | Apparatus for producing a tubular article having an annular groove therein A tubular article having a peripheral groove is formed by providing the groove in the wall of a tubular blank made of thermoplastic material such as polyethylene terephthalate by applying simultaneously a pressure against the wall of the blank and axial s... | 08/28/1984 |
| 4454739 | Ring rolling mill A ring rolling mill comprising a driven working roll, a rotary mandrel serving as a counter-roll, and a containment roller carried by a pivoted arm and able to engage laterally the ring being rolled, further includes a tracer roller carried by a respectiv... | 06/19/1984 |
| 4389147 | Can support system A mechanism for locating a hollow tubular can body relative to an internal support mandrel including a resilient member adapted to bear against a portion of the can body in order to positively locate same. Also included is a fixed relationship between the... | 06/21/1983 |
| 4326397 | Multiple mandrel-ring rolling machine A multiple-mandrel ring rolling machine for producing a ring from a ring blank having a plurality of elongated mandrel rolls rotatably mounted on a rolling platform fixedly mounted to a frame for rotation relative thereto is disclosed. The mandrel rolls a... | 04/27/1982 |
| 4173134 | Apparatus and method for guiding a ring structure during the manufacture thereof An apparatus and method are provided for maintaining a ring at a predetermined location with respect to a pair of roll forming dies during a roll forming manufacturing process. The apparatus and method may include variable width means adapted to be variab... | 11/06/1979 |
| 4134284 | Method and apparatus for the manufacture of hollow bodies Hollow bodies are produced from deformable plane or conically shaped blanks by rotating the blanks about an axis extending at least approximately through the cross-sectional center of gravity of the hollow body to be formed and simultaneously forming undu... | 01/16/1979 |
| 4055977 | Method and apparatus for making double groove pulleys An apparatus is provided for forming a pulley having at least two grooves from a cup-shaped metal blank having an axially extending sidewall. The blank is rotated about its longitudinal axis and is crushed between axially closing dies. As the blank is bei... | 11/01/1977 |
| 4018072 | End recorrugator The present invention relates to machines for recorrugating the ends of a helically corrugated pipe. One end of the pipe is inserted between and engaged by a juxtaposed pair of recorrugating rollers. The rollers are mounted on shafts which are driven to r... | 04/19/1977 |
| 4008592 | Method and apparatus for flanging a length of spirally wound corrugated pipe Disclosed herein is an assembly for forming a radial end flange upon a length of spirally wound corrugated metal pipe. The assembly includes a head stock having a pair of rotatably driven flanging rollers for preparing the end of the pipe to be flanged an... | 02/22/1977 |
| 3995466 | Machine for roll grooving of pipe A machine for semi-automatic grooving of pipe, capable of high output of full or less than full lengths of pipe with uniform external circumferential grooves, has supporting idler rolls for automatic positioning of the pipe axis at a small angle of deflec... | 12/07/1976 |
| 3992914 | Rolling operations A method of forming to shape an initially annular workpiece in which the workpiece is rotated and squeezed between a pair of opposed forming rolls at least one of which is advanced relatively towards another. A pair of opposed growth control rolls are sit... | 11/23/1976 |
| 3992910 | Rolling operations A method of rolling an initially annular workpiece between forming rolls in which after the forming rolls have been fully advanced they are retracted initially slowly for a predetermined distance. The forming rolls can then be further retracted at a great... | 11/23/1976 |
| 3992929 | Split mandrel A rolling machine for rolling an annular workpiece. The machine includes a mandrel for supporting the workpiece. The mandrel has two co-operating sections separated across its axis and a part of each section is shaped to conform to the rolled profile of a... | 11/23/1976 |
