Patents Assigned to SEVA
  • Patent number: 5915593
    Abstract: An apparatus for dispensing a viscous material includes a removable tank 1 and a device 10 for storing and dispensing the material, whereby the viscous material may be dispensed while an empty tank has been removed for refilling. The apparatus is useful for dispensing a hot-melt material.
    Type: Grant
    Filed: February 2, 1998
    Date of Patent: June 29, 1999
    Assignee: SEVA
    Inventor: Georges Bancon
  • Patent number: 5890623
    Abstract: The present invention relates to a plant and a process for the dispensing of a fluid product (4) held in a tank (3) and supplied to a nozzle (1) via a pipe (2). The product is pressurized by means of a pump (8) and of a cylinder (7) which is connected to a regulator (10) connected to the nozzle via an electronic card (17).
    Type: Grant
    Filed: August 9, 1996
    Date of Patent: April 6, 1999
    Assignee: Seva
    Inventor: Dominique Thomas
  • Patent number: 5882582
    Abstract: A ladle (1) comprising a main portion (5), an outlet (3) and an inductor assembly (2) fitted onto the main portion. The main portion comprises a cavity (13) defined by a refractory lining, provided with at least one opening (21) and shaped so that no pockets of molten metal remain after pouring. Consequently, the metal flows more readily, and hot deslagging and metal temperature measurement are made easier. The ladle is useful for maintaining the temperature of high melting point metals such as steel or superalloys for processes requiring metal sampling.
    Type: Grant
    Filed: July 9, 1997
    Date of Patent: March 16, 1999
    Assignees: Seva Chalon-Sur-Saone, Otter Junker GmbH
    Inventors: Jean-Louis Comarteau, Alain Remy, Dieter Schluckebier
  • Patent number: 5871123
    Abstract: A device including a cavity defined by walls (17) having a feed opening (18) and an outlet (19) for the fluid material (m). The outlet (19) is connected to a nozzle (20). The device is suitable for measuring, controlling and depositing the material (m).
    Type: Grant
    Filed: November 12, 1996
    Date of Patent: February 16, 1999
    Assignee: Seva
    Inventor: Dominique Thomas
  • Patent number: 5853605
    Abstract: A liquid metal casting conduit (1) is shaped as a partial torus and has an inductor (3) embedded in concrete and whose turns are asymmetrical with respect to the axes (XX') and (YY') of the conduit. It is used for to the homogenization of the metal temperature when the conduit is secured to a low pressure casting ladle (7).
    Type: Grant
    Filed: August 8, 1997
    Date of Patent: December 29, 1998
    Assignee: SEVA
    Inventors: Jean-Louis Comarteau, Christophe Liebaut, Patrice Nykiel, Alain Remy
  • Patent number: 5799718
    Abstract: A device for preheating a metal casting channel (3). The device is positioned in a rapidly removable manner by a frame (1) consisting of a stationary portion (12) and a movable portion (26). The channel (3) comprises a refractory part (5) surrounded by an insulating coating (7), an inductor (8) and refractory concrete (10) within a shell (11). The preheating device includes the inductor (8) and an element (2) made of a refractory and electrically conductive material. Said device is useful for evenly and uniformly preheating a metal casting channel (3).
    Type: Grant
    Filed: August 7, 1996
    Date of Patent: September 1, 1998
    Assignee: SEVA
    Inventors: Jean-Louis Comarteau, Daniel Boudot, Christophe Liebaut, Patrice Nykiel
  • Patent number: 5742523
    Abstract: A device for delivering through a pipe a mass of a selected gas close to a selected predetermined mass value m, to a system at a predetermined working pressure P0 substantially greater than 100 bars according to the present invention incorporates a vessel of known volume V0, fitted with an inlet valve and with an outlet valve that is operatively connected to control passage through the pipe. A volume of a selected gas is injected into the vessel until a pressure of the gas in the vessel reaches a predetermined initial high pressure P1 with the initial high pressure P1 being greater than the working pressure P0. A temperature T of the gas in the vessel and the pressure of the gas in the vessel are measured, and a calculated pressure P2 is calculated using a formula: ##EQU1## wherein the volume of the vessel is substantially greater than a volume of the mass m at the working pressure P0 and the initial high pressure P1 is greater than the working pressure P0.
    Type: Grant
    Filed: December 23, 1994
    Date of Patent: April 21, 1998
    Assignee: Seva
    Inventors: Dominique Thomas, Olivier Benrubi
  • Patent number: 5711062
    Abstract: Process for the manufacture of a containment element for a fluid heated to a temperature exceeding 850.degree. C. A blank made of a refractory metal alloy is coated with a glass-based adhesive, at least one film made of a glass suitable for the material and the plasticity temperature of the blank is laid down on it, the blank is heated to the plastic temperature and subjected to a first stamping operation to shape the chamber of the containment element, followed by a second stamping operation to form the inner or outer flaps of the chamber. The element is then cooled, and finally, heat-treated.
    Type: Grant
    Filed: February 21, 1995
    Date of Patent: January 27, 1998
    Assignee: SEVA
    Inventor: Jean-Paul Bagard
  • Patent number: 5708257
    Abstract: A heating assembly 1 for transferring liquid metal 28 has a closed cross-section and includes a refractory tube 4 wrapped in an insulating layer 5 which is in turn surrounded by an inductor 3 enclosed in refractory concrete within a metal shell, the insulating layer 5 consisting of an insulating refractory concrete layer 5a. The heating assembly 1 may be used in a liquid metal holding furnace 9 provided with a supply of pressurised gas Pr for producing metal parts.
    Type: Grant
    Filed: September 26, 1995
    Date of Patent: January 13, 1998
    Assignee: Seva
    Inventors: Jean-Louis Comarteau, Daniel Boudot, Alain Remy, Patrice Nykiel
  • Patent number: 5601139
    Abstract: A jet of liquid metal 42 is directed onto a fast-moving receiving surface 4 and reciprocal relative motion is caused between the receiving surface 4 and the jet 42 perpendicularly to the moving direction.
    Type: Grant
    Filed: July 12, 1995
    Date of Patent: February 11, 1997
    Assignee: SEVA
    Inventor: Alain Remy
  • Patent number: 5478148
    Abstract: A fluid tight container 11 defines a conical internal cavity 35, and has an upper feed pipe 12 and a lower outlet opening 14. A cylindrical stirrer 15 is wholly enclosed in the cavity, and is driven in a circular oscillating manner by an external eccentric mechanism coupled to an extension of the stirrer. This arrangement makes it possible to mix products of high viscosity and gas without excessive heating and leakage, by virtue of the exclusive use of static fluid-tightness.
    Type: Grant
    Filed: November 16, 1994
    Date of Patent: December 26, 1995
    Assignee: SEVA
    Inventors: Dominique C. A. Thomas, Pierre Delorme
  • Patent number: 5325636
    Abstract: A polishing machine comprising a frame 1, a mobile polishing head 2 mounted on the frame, an abrasion tool 10, and a reciprocating slide 7 for causing the tool to polish a contacted object. The tool is mounted on a tool holder 9 fitted with a pneumatic system 36, 38; 50 producing a dual adjustment of the bearing pressure generated by the tool 10 on the object P being polished.
    Type: Grant
    Filed: May 28, 1992
    Date of Patent: July 5, 1994
    Assignee: SEVA
    Inventors: Claude Attanasio, Jean-Claude Seigue
  • Patent number: 5287658
    Abstract: A polishing machine comprises a vertical frame 1, a workpiece-carrier plate which is horizontally movable in at least one direction, and a support column 3 vertically movable in relation to the frame and supporting a polishing unit comprising a tool holder 9 carried by a slide 41 driven in translational motion by an eccentric device operated by an electric motor 8. The tool holder thus undergoes an alternating translational or reciprocating motion, and a hydraulic jack 50 is provided to urge the tool holder against the workpiece being polished. The structure for imparting the alternating translational motion is formed by an internal connecting rod-crank assembly 34, 46 mounted in the slide 41.
    Type: Grant
    Filed: June 11, 1993
    Date of Patent: February 22, 1994
    Assignee: SEVA
    Inventors: Claude Attanasio, Jean-Claude Seigue
  • Patent number: 4787428
    Abstract: Liquid from a supply tank B flows into a container C via outer and central annular chambers 14, 8 of filling apparatus A. Communication between the chambers is controlled by a flexible diaphragm 5 selectively urged against an annular seat 15 on a wall 10 separating the chambers in response to air pressure supplied to a chamber 23 on an opposite side of the diaphragm.
    Type: Grant
    Filed: July 21, 1987
    Date of Patent: November 29, 1988
    Assignee: Seva
    Inventors: Marcel Bacroix, Claude Toubhans
  • Patent number: 4787427
    Abstract: A filling apparatus operating by counterpressure and intended for use on bottling or filling machines for a barrel 1 equipped with an electric sensor 2 for controlling the fill level of the containers, and connected to a solenoid valve E and supply tank B filled with liquid under gaseous pressure, as well as to a detector P that senses the proximity of the container C to be filled. Barrel 1 of filling apparatus A contains a chamber 11 which, when no container C is being applied against the filling apparatus, is divided by two flexible membranes 5, 6-72 into three successive annular chambers 69, 70, 71 separated by the dividing walls 58, 62-621 of the two membranes 5, 6-72.
    Type: Grant
    Filed: January 13, 1987
    Date of Patent: November 29, 1988
    Assignee: Societe Dite: SEVA
    Inventors: Marcel Bacroix, Claude Toubhans