Did You Know...
...that after Walter Hunt patented the safety pin in 1849, he sold the rights to it for $400?
PatentStorm News
Make the Most of Our Site
See this month's Top Inventors and Most Cited Patents.
Stay on top of the latest innovations by subscribing to an RSS feed.
Registered users: Manage your profile.
| Number | Title | Issue Date |
| 7353684 | Method and apparatus of manufacturing drum An apparatus and method of manufacturing a drum, for use in an appliance such as a dryer, that prevents noise and vibration during operation. The method involves forming a cylindrical drum; reducing a diameter at both ends of the drum; forming beads in a central par... | 04/08/2008 |
| 7328510 | Elbow rotator An elbow rotator apparatus for rotating an integrally formed section of an elbow workpiece includes a pair of gripping arms which are selectively positionable in a first position displaced from the elbow workpiece, and a second position in which the gripping arms ar... | 02/12/2008 |
| 7313940 | High-pressure shaping system A high-pressure system for hydroshaping a hollow workpiece has a lower die and an upper die vertically shiftable above the lower die and forming therewith a cavity shaped to hold the workpiece. An upper actuating element bears downward via a vertically compressible ... | 01/01/2008 |
| 7231792 | Method and device for manufacturing UOE steel pipes A method and device for manufacturing UOE steel pipes, wherein, when an opening width of the U-can obtained by U-ing press is larger than the die-diameter in an O-press of later step, while said opening is narrowed from the front end by the closing rolls disposed be... | 06/19/2007 |
| 7188502 | Method and device for changing the rolls of a tube welding stand The invention relates to a method for changing sets of top rolls, lateral rolls, and a bottom roll, and mounted in chocks of a welding stand of a continuously operating longitudinal tube welding machine. The inventive method enables the rolls to be changed faster, u... | 03/13/2007 |
| 7107682 | Method for manufacturing tubes and profiles The invention relates to a method for manufacturing tubes and profiles with variable wall thickness over the length. The method comprises the steps of flexible rolling of continuous material strip with variable thickness in the longitudinal direction of the strip ma... | 09/19/2006 |
| 7024748 | Segment formed flexible fluid containment vessel A flexible fluid containment vessel or vessels fabricated out of segments of fabric clamped together for transporting and containing a large volume of fluid, particularly fresh water. ... | 04/11/2006 |
| 7004001 | Roll forming apparatus for forming sheet material into multiple shapes A roll forming apparatus includes at least one convertible roller assembly. The convertible roller assembly includes a support plate rotatably mounted on a shaft. The support plate includes at least one roller. The support plate may be toggled by an actuator from a ... | 02/28/2006 |
| 6931903 | Apparatus and method for roll forming shaped members Apparatus for roll forming shaped members from sheet material has a primary powered section that roll forms along a primary pass line and a secondary powered section. The secondary powered section is coupled to and powered by the primary powered section, and roll fo... | 08/23/2005 |
| 6840571 | Tubular bar with integral rolled locking system and method of making same The modular grill for vehicles such as trucks includes an elongated screen of generally rectangular configuration, with the longest dimension extending horizontally and with the screen having inner and outer surfaces. A plurality of vertically spaced elongated tubul... | 01/11/2005 |
| 6705143 | Method of manufacturing loading plane border frame tubes for chairs A method of manufacturing loading plane border frame tubes for chairs utilizes continuous roll-forming processes to roll a base material to form loading plane border frame tubes for use on chairs. The processes include: transport a steel sheet to a roller leveler fo... | 03/16/2004 |
| 6629632 | Apparatus and method for manufacturing hollow shafts An apparatus and method for welding a shaft having an open seam defined between opposed longitudinal edges. The method comprising passing the shaft along its longitudinal axis through an array of pressure rollers which contact the surface of the shaft at ... | 10/07/2003 |
| 6425279 | Method of manufacturing gas springs The method includes making a fluid communication channel (44), which has a selectively variable cross-sectional area profile, in the inner face of a gas spring cylinder (32) so as to permit fluid communication at different selective rates bypassing around... | 07/30/2002 |
| 6351978 | Roller mount with three-axis freedom A roller mounting arrangement for a machine in which elongated material is shaped by rollers as the material progresses along a pathway. The rollers are mounted so that they are free to pivot and distribute forming pressure over a wider area of the materi... | 03/05/2002 |
| 6223575 | Tube forming machine using three point bending A tube forming machine for making a tube from a sheet is disclosed. The forming rolls of this invention include various V-shaped rolls at least some of which are used as part of a three-point bending technique. The three-point bending technique entails th... | 05/01/2001 |
| 6216511 | Apparatus and method for smoothing a welded seam of steel pipe A method and apparatus for smoothing a thick walled portion of a steel pipe produced by pressure-welding two opposite longitudinal edges of an open pipe with a squeeze roll after being subjected to induction heating. Outer and inner reduction rollers pres... | 04/17/2001 |
| 6216940 | Pipe forming roll apparatus and method A forming stand for continuously forming a skelp material into a pipe, by pressure of spaced-apart forming rolls supported by spaced upper and lower shafts, the forming rolls having two portions, with one portion fixedly fitted on one side of its shaft, a... | 04/17/2001 |
| 6212925 | Method for roll forming steel pipes, and equipment for same It is an object of the present invention to provide a novel roll-forming method for steel pipes and equipment for same with which (1) the evidence that forming work in the FF forming method is mainly carried out at the cluster forming portion showing the ... | 04/10/2001 |
| 6131431 | Pipe member, method and apparatus for manufacturing the pipe member There is disclosed a pipe member rolled up as a coil and roll-formed, the pipe member made of material having a spring-back characteristics and having a specific residual stress distribution existing along a direction perpendicular to the rolling-up direc... | 10/17/2000 |
| 6041632 | Pipe forming roll apparatus and method A forming stand for continuously forming a skelp material into a pipe, by pressure of spaced-apart forming rolls supported by spaced upper and lower shafts, the forming rolls having two portions, with one portion fixedly fitted on one side of its shaft, a... | 03/28/2000 |
| 5943892 | Method of breakdown-forming electro-unite tubes Electro-unite tubes having different plate thicknesses or different diameters are breakdown-formed without changing the upper rolls and the lower rolls of the breakdown pass rolls each time. Each of breakdown pass rolls 12 includes an upper roll 12a havin... | 08/31/1999 |
| 5878614 | Finn pass forming device for forming seam welded steel pipes and roller device available for forming seam welded steel pipes of a plurality of sizes In the fin pass forming apparatus, the fin roller is split in two symmetrically with respect to the center line of the flow direction of a steel pipe to be formed, and a plurality of side rollers are arranged on a section perpendicular to the flow directi... | 03/09/1999 |
| 5875668 | Roll forming method for forming flat tube and roll forming apparatus using the same According to the present invention, a roll forming method includes a first roll forming process for forming a trapezoidal projecting portion at a center portion, a second roll forming process for gradually narrowing an upper side of the trapezoidal projec... | 03/02/1999 |
| 5865053 | Transition beam forming section for tube mill A transition forming unit for a tube mill is provided for forming a strip into a generally annular shaped cross-sectional configuration. The forming process is performed by a plurality of roll assemblies mounted on at least a pair of spaced longitudinally... | 02/02/1999 |
| 5862694 | Tapered tube manufacturing apparatus and process An improved forming station and process for use in tapered tube manufacturing apparatus and process where fully synchronized output motion of multiple slave axes on adjustable rolls are scaled to the external process input of the master axis so as to gene... | 01/26/1999 |
| 5845526 | Method for producing pipe having polygon-shaped closed cross-section and device therefor A method for continuously producing pipes, each having a polygon-shaped closed cross-section taken perpendicularly to the feeding direction of a strip of metal, which are free from brittleness caused by metal fatigue, and have good precision. A feed-bendi... | 12/08/1998 |
| 5802903 | Manufacturing method for angled steel pipes According to the present invention, angled steel pipes manufactured by cold forming can be manufactured into such angled steel pipes that are soft and highly stretchable over the entire sections thereof, almost free from residual stresses, and have high b... | 09/08/1998 |
| 5784911 | Apparatus for manufacturing a welded pipe An apparatus for manufacturing a welded pipe. The apparatus includes a cage or cluster roller molding system. In either case, a rotary axis of each roller is slanted counterclockwise or clockwise with respect to a manufacturing line direction of the appar... | 07/28/1998 |
| 5673579 | Welded steel pipe manufacturing apparatus and method In welded pipe manufacturing a steel strip is fed and bent by forming rolls into a pipe. A load detector is provided for a roll rotary shaft of each forming roll; a forming roll inclination adjustment device inclines the roll rotary shaft. The roll shaft ... | 10/07/1997 |
| 5647241 | Rotary upper roll selector A tube forming machine having at least two upper forming roll members in the breakdown section which may be selectively indexed into cooperative working relation with a lower forming roll member to produce different size tubes without the necessity of phy... | 07/15/1997 |
| 5410901 | Method and apparatus for forming overlapped tape Provided is a method and apparatus employing stepped overlap apertures disposed in adjacent overlap rings. The rings are arranged so that the diameters of the stepped apertures are sequentially decreasing. The apertures form a generally flat advancing met... | 05/02/1995 |
| 5376289 | Lubricating oils and greases The present invention relates to additives for lubricating oils and greases which endow said lubricating oils and greases extremely good performance characteristics under boundary lubrication conditions. Such additives are derivatives of monofunctional or... | 12/27/1994 |
| 5366137 | Method and apparatus for shaping metal sheets into can bodies and feeding the can bodies to a welding station The can body to be welded in a welding station is shaped by gradually bending flat metal sheets zone by zone along a linear conveying route until the can body has been shaped. This linear conveying route at the same time leads to the welding station. In t... | 11/22/1994 |
| 5321889 | Base drum of electrophotographic photoconductor and method for the preparation thereof A base drum of an electrophotographic photoconductor has a straightness of 0.04 mm or less, a roundness of 0.04 mm or less, a wall-thickness non-uniformity of &#b1;0.015 mm or less and a maximum surface roughness (Rmax) in the range from 0.3 to 1.0 μm. T... | 06/21/1994 |
| 5301869 | Machine for manufacturing welded steel pipes and method for handling the machine The present invention is a machine for manufacturing welded steel pipes, in which an edge bending roll for constraining under pressure a strip from its pipe edge portions to the boundaries between the pipe edge portions and its pipe side portions to bend ... | 04/12/1994 |
| 5271149 | Method for producing a co-axial cable Conventionally co-axial cable is made in a continuous extrusion machine by continuously extruding an aluminum tubular cladding (1) through an annular die and simultaneously continuously introducing a core (4), comprised of a conductive wire surrounded by ... | 12/21/1993 |
| 5222284 | Apparatus for making co-axial cable Conventionally co-axial cable is made in a continuous extrusion machine by continuously extruding an aluminium tubular cladding (1) through an annular die and simultaneously continuously introducing a core (4), comprised of a conductive wire surrounded by... | 06/29/1993 |
| 5104026 | Apparatus for roll-forming an automotive bumper A bumper bar for vehicles formed from rolled sheet steel having a closed tubular profile designed to have a high impact resistance, high strength-to-weight ratio, and a low cost of manufacture. The bar is preferably swept along its longitudinal axis to cr... | 04/14/1992 |
| 5092512 | Method of roll-forming an automotive bumper A bumper bar for vehicles formed from rolled sheet steel having a closed tubular profile designed to have a high impact resistance, high strength-to-weight ratio, and a low cost of manufacture. The bar is preferably swept along its longitudinal axis to cr... | 03/03/1992 |
| 5061141 | Method and apparatus for producing can bodies A method and apparatus for producing can bodies, wherein blanks are laterally centered after removal from a magazine, are engaged in the center of their rear edge and are transported into a shaping station in which initially the center section of the blan... | 10/29/1991 |
