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An armor with rollers is provided that enables a user to move in all positions by rolling on a hard and smooth surface while constantly varying his bearing points on the ground.
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| Number | Title | Issue Date |
| 8006528 | Method for producing duplex stainless steel pipe, method for straightening, method for regulating strength, and method for operating straightener In straightening a duplex stainless steel pipe on a multi-roll pipe straightener, the value of A defined by the formula (1) is set to not more than 2.0% when it is not necessary to improve the mechanical strength of the pipe, and the value of A is set to more than 2... | 08/30/2011 |
| 7654122 | Process for straightening a tube In straightening a tube using a roll straightening machine provided with drum type straightening roll pairs vertically opposingly disposed, at least an outer layer portion of a roll main body is made of elastic material having spring type hardness Hs (JIS K 6301 A t... | 02/02/2010 |
| 7418848 | High-performance and high-efficiency rolled fin tube and forming disk therefor Disclosed herein is a forming disk for fabricating a fin tube. The forming disk comprises a substantially circular plate having a shaft connection hole formed adjacent a center thereof for receiving a shaft of a form rolling machine. A plurality of projections havin... | 09/02/2008 |
| 7337644 | Assembled workstation A workstation has a base, a conveying device, a driving assembly and a working device. The base is composed of multiple supporting frames. The conveying device is mounted on the base and has a rail, a moving base, a motor, a pushing rod and two rotating rods. The ro... | 03/04/2008 |
| 7276046 | Liquid conductive cooling/heating device and method of use A device for heating or cooling medical fluids to be administered to a patient is disclosed. The device comprises a hollow, cylindrical heat/cold exchanging body having external grooves for receiving flexible tubing, the body comprising conductive material for trans... | 10/02/2007 |
| 7197808 | Process for forming a groove in a friction layer Device for forming of at least one groove (92, 93, 94, 95, 96, 97, 98) in a friction layer (91) of a covered disk (90) for a force transmission aggregate, in particular for a disk clutch, with a rolling device (1, 11, 21, 31) with at leas... | 04/03/2007 |
| 7194805 | Method of manufacturing a post ball bearing with helical arrangement of pocket holes A post bearing and method of manufacture in which bearing balls are loaded into a series of pocket holes arranged along a helical pattern in a sleeve cage. A single groove is swaged into the outside diameter of the sleeve intermediate the ball turns to capture the b... | 03/27/2007 |
| 7169239 | Solid 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 |
| 7094458 | Surface treatment of fluorinated contact lens materials Hydrogen-plasma modification of a contact lens made from a fluorinated polymer reduces the surface chemistry of by removing fluorine, leaving behind a carbon-enriched surface that is further plasma processed into a hydrophilic surface for a lens material to be inser... | 08/22/2006 |
| 7065996 | Rolling die for ball screw A rolling die for a ball screw has: a cylindrical portion including a helical protrusion formed in an outer peripheral surface thereof for forming a helical ball groove in a raw material of a screw shaft of the ball screw; and a conical lead-in portion formed in one... | 06/27/2006 |
| 7055553 | Laminated hose construction having one or more intermediate metal barrier layers A laminated fluid transfer hose construction having one or more intermediate metal barrier layers is provided, as well as, a hose assembly employing the laminated hose construction and coupling means. The inventive hose construction demonstrates improved barrier pro... | 06/06/2006 |
| 6968719 | Apparatus and methods for forming internally and externally textured tubing A machine may produce a tube having textured internal and external surfaces in a single operation. Inner and outer knurling tools may form the textured surfaces. The texturing of the internal and external surfaces may be helical patterns of ribs and grooves. The hei... | 11/29/2005 |
| 6920993 | Soft storage container with zip-fastened bottom An erectable/collapsible soft storage container having a body of flexible material that includes two first sidewalls, two second sidewalls and a bottom. At least three sidewalls are embedded with a hard board. The bottom has two bottom flaps and an edge-fastener eng... | 07/26/2005 |
| 6920773 | Method and apparatus for manufacturing tubes by rolling A method for manufacturing a tube made of a non-ferrous material, particularly a tube made of mainly copper, by rolling, in which method, in the first working step the tube billet is worked by rolling with conical rolls, so that mainly owing to the deformation resis... | 07/26/2005 |
| 6904779 | Method of manufacturing a heat exchanger tube with parallel fins A method of forming a finned tube in which the fins are planar, paralleled and extend radially to the tube longitudinal axis, including the steps of positioning at least one rotating forming roll against the tube exterior surface, the forming roll being spaced from ... | 06/14/2005 |
| 6892559 | Method and apparatus for manufacturing tubes A method for manufacturing a tube made of a non-ferrous material, particularly a tube made of mainly copper, in which method, in the first working step the tube billet is worked so that mainly owing to the deformation resistance, the temperature of the tube billet u... | 05/17/2005 |
| 6883358 | Method of producing sliding sleeves for gearshift mechanisms A method of producing a sliding sleeve for gearshift mechanisms includes two forming steps. In the first forming step a preform, which has been pushed onto a tool mandrel with an external toothing, is formed by roller spinning so as to form on the inner circumferent... | 04/26/2005 |
| 6880421 | Rolled ball screw and method for rolling ball screw groove A rolled ball screw has a screw shaft having a ball screw groove so as to engaging with rolling elements of a ball screw, the screw shaft is formed by rolling while a thread rolling die is pressed against a cylindrical bar-shaped member to thereby roll the ball scre... | 04/19/2005 |
| 6786072 | Method of fabricating a heat exchanger tube A metallic heat transfer tube, in particular for the evaporation of liquids from pure substances or mixtures on the outside of the tube. Fins are integrally formed on the outside of the tube. Recesses are arranged in the area of the base of the primary grooves and e... | 09/07/2004 |
| 6718809 | Method for processing billets out of metals and alloys and the article This method refers to a method by which the physical and mechanical properties intrinsic to a fine-grain structure may be formed in metal billets using pressure treatment. The method is designed to treat rods, bars and other particularly long billets. This method is... | 04/13/2004 |
| 6708544 | Thread rolling die and process for the production thereof In a rolling die for forming a ball screw by rolling for example, a biting portion is formed on one end of a straight portion while a relief portion is formed on the other end. Further, the helical protrusion on the biting portion and the helical protrusion on the r... | 03/23/2004 |
| 6334349 | Method for the manufacturing of a shaft with a larger diameter flange The invention relates to a method for the manufacture of a shaft with a larger diameter flange, particularly for a cone gear, a round stock as the workpiece being rotated about its longitudinal axis relative to at least one spinning roll and is axially co... | 01/01/2002 |
| 6067832 | Process for the production of an evaporator tube A process for producing a heat exchanger tube (1) with a highly porous surface structure, in particular for evaporating liquids from pure substances or mixtures on the outside of the tube. The process starts from a rolling operation, by means of which hel... | 05/30/2000 |
| 5916318 | Machine for simultaneously forming threads or fins on multiple cylindrical workpieces A machine for simultaneously forming helical threads or fins on the exterior of first, second and third elongated cylindrical workpieces, the machine having first, second and third arbor blocks arranged in a common plane and spaced about a center point in... | 06/29/1999 |
| 5803164 | Multiple finned tube and a method for its manufacture A metallic finned tube having multiple fins integrally formed on and extending helically on an outside of the tube. The fins number at least four and begin at fin run start locations spaced evenly about a circumference of the tube, with at least one group... | 09/08/1998 |
| 5659955 | Method of making powder metal helical gears A method includes the steps of compacting powder metal to form a powder metal blank, and forming gear teeth on the powder metal blank by rolling the powder metal blank between rolling dies rotating about parallel axes. The step of forming gear teeth on th... | 08/26/1997 |
| 5642638 | Process for the rolling of hallow ingots on a assel rolling mill The invention relates to a process for reducing the outside diameter and wall thickness by rolling a cylindrical hollow ingot the front part of which is fed into an Assel rolling mill, in which connection, in front of the Assel rolling mill as seen in the... | 07/01/1997 |
| 5617752 | Methods of and apparatus for straightening rods A rod-straightening apparatus 28 includes a movable collet unit 30 for gripping a butt end 24 of a rod 20 to be straightened. The rod 20 extends from the collet unit 30 in a cantilevered fashion to a tip end 26 of the rod. An intermediate portion of the r... | 04/08/1997 |
| 5365763 | Device for shaping of helical fins on the outer wall of a tube A device for the formation by rolling of helical fins on heat exchange tubes to increase the heat transfer capacity of the tubes. The device comprises four forming rolls (6, 7, 8, 9) which are arranged on two carriages (4, 5) which are moved together in t... | 11/22/1994 |
| 5003690 | Finning and thread rolling machine A finning and thread rolling machine capable of producing an integral finned tube, an extended finned tube or a wrap-on finned tube, whichever is desired, the tubing to be used for extended surface heat transfer. Types of tubes produced are integral low f... | 04/02/1991 |
| 4915166 | Titanium heat exchange tubes Improved method and apparatus for making finned tubing from difficult to work materials such as titanium and stainless steel uses spaced sets of finning discs on a plurality of arbors to form a tube against a mandrel having different diameters under each ... | 04/10/1990 |
| 4901553 | Method of manufacturing a finned tube A method of manufacturing a metallic tube with a spiral fin for use as a heat transfer tube of a heat exchanger and the like. A solid metallic bar or metallic elementary hollow bar provided with a small hole is supplied to an inclined rolling mill having ... | 02/20/1990 |
| 4866830 | Method of making a high performance, uniform fin heat transfer tube A high performance heat transfer tube for use in the condenser of an air conditioning or refrigeration system is formed on a grooved mandrel which has a sufficient number of grooves i.e., thirty six to forty eight, with a suitable helix angle, such as thi... | 09/19/1989 |
| 4825674 | Metallic tubular structure having improved collapse strength and method of producing the same Disclosed is a metallic tubular structure having an improved collapse strength characterized in that the tubular structure has a circumferential residual tensile stress left in the inner peripheral surface thereof, said residual stress ranging between 0 a... | 05/02/1989 |
| 4765058 | Apparatus for manufacturing enhanced heat transfer surface An apparatus for producing a high performance evaporator tube having a subsurface channel formed between adjacent helical fins with the subsurface channels having alternating closed portions and open pores above the subsurface channels. The fins of the tu... | 08/23/1988 |
| 4763504 | Straightening machines and methods A cross-roll straightener adapted to straighten round metal stock, wire, rods, bars and tubes by rotatingly advancing the stock through a central curved pass such that it is flexed beyond the yield point in a substantially uniform and gradual manner. A th... | 08/16/1988 |
| 4711112 | Straightening machines and methods A cross-roll straightener adapted to straighten round metal stock, wire, rods, bars and tubes by rotatingly advancing the stock through a central curved pass such that it is flexed beyond the yield point in a substantially uniform and gradual manner. A th... | 12/08/1987 |
| 4692978 | Method for making heat exchange tubes Improved method and apparatus for making finned tubing from difficult to work materials such as titanium and stainless steel uses spaced sets of finning discs on a plurality of arbors to form a tube against a mandrel having different diameters under each ... | 09/15/1987 |
| 4640115 | Straightening device In order to increase output of pipe straightening devices, there is provided a driving unit between a preparatory station for the pipes and a feeding station which advances the pipes from the preparatory station in axial direction one after the other in t... | 02/03/1987 |
| 4616391 | Apparatus for making heat exchange tubes Improved method and apparatus for making finned tubing from difficult to work materials such as titanium and stainless steel uses spaced sets of finning discs on a plurality of arbors to form a tube against a mandrel having different diameters under each ... | 10/14/1986 |
