Patents by Inventor Josef Ritter
Josef Ritter has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 4221143Abstract: The invention relates to a method of cutting off sections of a grating web of any desired length by means of shears. In the event there occurs a gap between the cross-bars of a welding machine, wherein the occurrence of the gap is established by a computer, so as to enable the introduction of the cutting blades of the shears into the mesh of the grating web, the grating web is cut in response to a signal from the computer.Type: GrantFiled: December 7, 1978Date of Patent: September 9, 1980Assignee: Fa. EVG Entwicklungs-u. Verwertungs-Gesellschaft mbH.Inventors: Gerhard Ritter, Klaus Ritter, Hans Gott, Josef Ritter
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Patent number: 4190758Abstract: The invention relates to a grid welding machine operating on the electrical resistance welding principle and having continuous forward feed of the longitudinal wires. Groups of rotary electrodes and counter-electrodes cooperate in pairs and are arranged above and below the feed path of the longitudinal wires respectively. The electrodes and counter-electrodes are formed as rollers, opposite each electrode roller on the far side of the feed path of the longitudinal wires a counter-electrode being disposed in the same plane. The electrode rollers are spring-loaded individually in the direction towards the associated counterelectrode roller. Between the counter-electrode rollers and coaxially therewith there are arranged substantially circular cross-wire feed discs each having a number of grooves provided at angular intervals along the periphery of said disc for receiving said cross-wires.Type: GrantFiled: March 24, 1978Date of Patent: February 26, 1980Assignee: EVG Entwicklungs- u. Verwertungs-Gesellschaft mbH.Inventors: Hans Gott, Gerhard Ritter, Klaus Ritter, Josef Ritter
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Patent number: 4161110Abstract: The invention relates to an automatic control device for a bending machine for use in the production of loops of bar or wire material for concrete reinforcement. The device includes a preselector for preselecting the type of loop required and determines the sense of direction and amount of bending required in that loop-type. Additionally, a selector is provided for selecting the length of each side of the loop of the type selected by the loop-type preselector.Type: GrantFiled: April 28, 1977Date of Patent: July 17, 1979Assignee: EVG Entwicklungs- und Verwertungs-Gesellschaft mbH.Inventors: Klaus Ritter, Gerhard Ritter, Josef Ritter, Josef Pohacker, Gert Jahrbacher
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Patent number: 4149059Abstract: The invention relates to electrical multi-spot resistance welding machine for the production of welded bar gratings produced by welding cross-bars into the narrow side of parallel, upright flat bars. Such a machine has a pressure-beam which is guided vertically on a frame for lowering onto and raising away from the bars to be welded. Two rows of electrodes are disposed on the pressure beam, the rows being transverse to the feed path of the flat bars and the electrodes in the two rows being aligned in the feed direction of the flat bars and the electrodes of each aligned pair thus formed are connected to the secondary terminals of opposite polarity of a respective welding transformer.Type: GrantFiled: July 27, 1977Date of Patent: April 10, 1979Assignee: EVG Entwicklungsu. Verwertungs-GmbHInventors: Hans Gott, Josef Ritter, Klaus Ritter, Gerhard Ritter, Rudolf Scherr
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Patent number: 4121629Abstract: A multispot welding machine for producing a mesh web from arrays of wire running skew to the longitudinal direction of the web and crossing one another has two endless circulating feeders which carry deflector-pins and each of which has a working run defining a different one of the edges of the mesh web to be produced, a wire-layer which is movable to and fro across the feeders and arranged to lay a number of wires alternately about a corresponding number of deflector-pins on the working runs of the two feeders, and a welding zone having means for welding the wires together at their crossover points. The endless feeders circulate in a common plane which is parallel with the plane of production of the web, the deflector-pins project substantially perpendicularly from the common plane, and the working runs of the two feeders have in the neighbourhood of the welding zone a greater separation from one another than before and beyond the zone.Type: GrantFiled: February 23, 1977Date of Patent: October 24, 1978Assignee: EVG Entwicklungs- u. Verwertungs GmbH.Inventors: Alois Sackl, Josef Ritter, Klaus Ritter, Gerhard Ritter
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Patent number: 4117872Abstract: The invention relates to a binding tool for twisting the free ends of a binding wire, particularly for holding together metal reinforcing rods at their crossover points. The tool has a feed device for the binding wire, at least one pair of wire guides which can be opened and closed like pincers and which form, in the closed state, a U-shaped wire guide path, in use, around an assembly to be bound, shears for cutting the advanced wire to length and a twisting head which can be driven and which has wire passages to receive the ends of the wire to be twisted, the wire feed path extending, when the twisting head is in the position of rest, through one wire passage therein and, via the U-shaped wire guide path into the other wire passage in the twisting head. The twisting head is disposed in the space between the wire guides of the or each pair and the wire passages in the twisting head are formed in components which can be swung inwards about bearing pins.Type: GrantFiled: May 23, 1977Date of Patent: October 3, 1978Assignee: EVG Entwicklungs- u. Verwertungs-GmbH.Inventors: Hans Gott, Josef Ritter, Klaus Ritter, Gerhard Ritter
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Patent number: 4116244Abstract: A multispot welding machine for producing a mesh web from arrays of wire running skew to the longitudinal direction of the web and crossing one another has two endless synchronously circulating feeders which carry deflector-pins and each of which has a straight working run; the runs are uniformly spaced from one another and each defining a different one of the edges of the mesh web to be produced, a wire-layer which is movable to and fro across the feeders and arranged to lay perpendicular to the runs a number of wires alternately about a corresponding number of deflector-pins on the working runs of the two feeders, and a welding zone having means for welding the wires together at their crossover points.Type: GrantFiled: February 23, 1977Date of Patent: September 26, 1978Assignee: EVG Entwicklungs-u. Verwertungs- GmbHInventors: Josef Ritter, Alois Sackl, Klaus Ritter, Gerhard Ritter
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Patent number: 4096680Abstract: The invention relates to reinforcement grids for steel concrete construct and consisting of longitudinal transverse rods crossing one another which, at some or all of their crossing points, are connected by pieces of binding wire looped around the rods and closed by twisting their free ends together. In order to give the grid rectangular stability, within each mesh of the grid, or within each rectangular mesh group comprising a number of adjacent meshes, the binding wire loops at the four crossing points of the rods defining the mesh or mesh group are looped around the rods defining the mesh or mesh group are looped around the rods so that the planes of half the loops are 90.degree. from the planes of the remaining loops, and the loops in each direction are uniformly present in the grid.Type: GrantFiled: May 9, 1977Date of Patent: June 27, 1978Assignee: Firma AVI Alpenlandische Veredelungs- Industrie Gesellschaft mbH.Inventors: Klaus Ritter, Gerhard Ritter, Josef Ritter
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Patent number: 4093106Abstract: The invention concerns an apparatus for detaching wires previously cut to length from a disordered bundle. The apparatus includes a container for the bundle of wire in which there is mounted, adjacent one end, a device for grasping the wires in turn adjacent their ends and moving them transversely to their longitudinal axis against a stop situated to the side of the draw-in region of two conveyor rollers which have a variable spacing between their axes. The rollers are arranged, on reducing their axial spacing, to grasp the end of each wire bearing against the stop and to pull that wire out of the bundle substantially in its axial direction to convey it to a receiving device.Type: GrantFiled: March 31, 1976Date of Patent: June 6, 1978Assignee: EVG Entwicklungs-u. Verwertungs Gesellschaft mbHInventors: Hans Gott, Josef Ritter, Klaus Ritter, Gerhard Ritter
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Patent number: 4064385Abstract: The invention is concerned with a multipoint mesh welding machine having a row of electrode holders on one side of the working plane of the mesh. The electrode holders are selectively electrically connectable to one of a number of busbars extending across the machine by individual adjustable switching members.Type: GrantFiled: October 24, 1975Date of Patent: December 20, 1977Assignee: EVG Entwicklungs-u. Verwertungs-Gesellschaft m.b.H.Inventors: Hans Gott, Josef Ritter, Klaus Ritter, Gerhard Ritter
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Patent number: 4020669Abstract: The invention concerns a bending machine for bar or rod material such as reinforcement bars for reinforcing concrete. The machine includes a bending mandrel which is stationary during the bending process and a bending tool which can be pivoted about the mandrel. Directly in front of the bending mandrel in the direction of the feed path of the bar or rod material are positioned two clamping cheeks movable relative to one another in a direction perpendicular to the feed path of the material, the cheeks each including a clamping face substantially parallel with the feed path and a cutting face substantially perpendicular to the respective clamping face, the lines of intersection of these faces forming cutting edges substantially parallel with one another.Type: GrantFiled: April 28, 1976Date of Patent: May 3, 1977Assignee: EVG Entwicklungs- und Verwertungsgesellschaft mbHInventors: Hans Gott, Josef Ritter, Klaus Ritter, Gerhard Ritter
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Patent number: 4021634Abstract: The invention concerns a welding machine for electrically resistance welding together, to form a mesh, at their points of intersection in a mesh production plane, two crossed groups of parallel wires. The machine incorporates at least two pairs of opposed cooperating welding electrodes, one of said pairs being arranged on each side of the mesh production plane. A pair of transformers have their primary windings connected in series and each pair of said electrodes are connected to the secondary winding of one of the transformers in such a way that in operation the welding current will flow through the electrodes and through the secondary windings of the transformers in series.Type: GrantFiled: March 18, 1976Date of Patent: May 3, 1977Assignee: Firma Evg Entwicklungs-u VerwertungsgesellschaftInventors: Hans Gott, Josef Ritter, Klaus Ritter, Gerhard Ritter, Gottfreid Zechner, Gerhard Schmidt
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Patent number: 4019665Abstract: The invention concerns a feed device for feeding rod or striplike material, the device having two or more feed members which are arranged to lie behind one another along a feed path of the material. Each of the feed members carries a plurality of grippers arranged at equal angular intervals around a central axis of the feed member and is connected with a gearing which imposes on the feed member a rotational motion about its axis and, simultaneously, a circular motion about a fixed axis parallel with its own axis. The arrangement is such that said rotational and circular motions are coordinated so that the grippers of each of said feed members describe a trochoidal path which includes a substantially straight-line section along the feed path.Type: GrantFiled: December 19, 1975Date of Patent: April 26, 1977Assignee: Firma Evg Entwicklungs-u VerwertungsgesellschaftInventors: Klaus Ritter, Hans Gott, Gerhard Ritter, Josef Ritter
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Patent number: 3936628Abstract: The invention relates to an apparatus for forming elongate reinforcing elements having a pair of rods and transverse rungs welded perpendicularly between said rods, said rods being fed parallel to one another in stepwise fashion between the welding electrodes, and said rungs being inserted perpendicularly between said rods before welding.Type: GrantFiled: May 2, 1974Date of Patent: February 3, 1976Assignee: EVG Entwicklungs- u. Verwertungsgesellschaft m.b.H.Inventors: Gerhard Ritter, Josef Ritter, Klaus Ritter, Wilhelm Boyer, Hans Gott