Patents by Inventor Otto Stenzel
Otto Stenzel 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).
-
Patent number: 8047302Abstract: Disclosed is a drilling and/or striking hammer that includes a lubricating device having a lubricant reservoir and a volume of lubricant contained therein. The lubricating device conveys lubricant to at least one a transmission system within the hammer's housing, a percussion system, and/or a tool holder at a variable dosing or flow rate. The dosing or flow rate varies as a function of tool stress which can include use intensity and/or temperature. A flexible tube extends between the reservoir and the lubricated component(s). At lease part of the flexible tube vibrates with the lubricated components during use and modifies a viscosity of the lubricant therein, based on tool use intensity. A pressure generating device can pressurize the lubricant, helping convey the lubricant to a targeted area for lubricating movable parts.Type: GrantFiled: June 23, 2009Date of Patent: November 1, 2011Assignee: Wacker Neuson Produktion GmbH & Co. KGInventors: Rudolf Berger, Otto Stenzel
-
Publication number: 20090277657Abstract: Disclosed is a drilling and/or striking hammer that includes a lubricating device having a lubricant reservoir and a volume of lubricant contained therein. The lubricating device conveys lubricant to at least one a transmission system within the hammer's housing, a percussion system, and/or a tool holder at a variable dosing or flow rate. The dosing or flow rate varies as a function of tool stress which can include use intensity and/or temperature. A flexible tube extends between the reservoir and the lubricated component(s). At lease part of the flexible tube vibrates with the lubricated components during use and modifies a viscosity of the lubricant therein, based on tool use intensity. A pressure generating device can pressurize the lubricant, helping convey the lubricant to a targeted area for lubricating movable parts.Type: ApplicationFiled: June 23, 2009Publication date: November 12, 2009Applicant: Wacker Neuson SEInventors: Rudolf Berger, Otto Stenzel
-
Publication number: 20080035101Abstract: The invention relates to an oil supply for an internal combustion engine, comprising an oil supply device for the supply of oil to a piston, reciprocating in a cylinder. The oil supply device is embodied such that at least at a point at which the piston is in the region of bottom dead centre, oil is introduced directly into a region below the piston, by means of the oil supply device, in particular, beneath the piston crown and within the piston skirt. The oil supply device thus comprises at least one tube element, extending into a region beneath the piston crown. The tube element terminates as close as possible to a gudgeon pin, when the piston is at bottom dead centre. A targeted lubrication of the mechanically and thermally highly loaded gudgeon pin can thus be guaranteed. It is also possible by means of the oil supply to supply transfer ports of a two-stroke engine with oil, counteracting a tendency to coke up.Type: ApplicationFiled: April 20, 2005Publication date: February 14, 2008Applicant: WACKER CONSTRUCTION EQUIPMENT AGInventors: Wolfgang Hausler, Otto Stenzel, Georg Sick
-
Publication number: 20080019774Abstract: A concrete finishing trowel comprising at least one rotor which is mounted on a frame and is provided with a rotatably driven shaft and several blades that are mounted on the driven shaft. A blade deflection mechanism is provided by means of which the blades can be moved on a path that deviates from a circular path relative to the ground when the blades are rotated by the driven shaft.Type: ApplicationFiled: April 22, 2005Publication date: January 24, 2008Applicant: WACKER CONSTRUCTION EQUIPMENT AGInventor: Otto Stenzel
-
Publication number: 20070163370Abstract: The invention relates to a wobble drive, in which a shaft supports a wobble ring by means of a pivot bearing, a finger extending from said ring. To reduce vibrations caused by the movement of the finger, at least one balancing mass is configured on the shaft. Alternatively or in addition, at least one balancing mass can be provided on the wobble ring. This allows the vibrations that are caused naturally by the movement of the finger to be compensated.Type: ApplicationFiled: March 11, 2005Publication date: July 19, 2007Applicant: WACKER CONSTRUCTION EQUIPMENT AGInventors: Rudolf Berger, Wolfgang Schmid, Otto Stenzel, Michael Fischer
-
Publication number: 20070034396Abstract: The invention relates to a hand-held working tool, comprising a first unit, powered by a vibration on operation and a second unit which may be displaced relative to the first unit. A vibration isolation device is arranged between the first and second unit, comprising an actuator, for generation of a control force, by means of which the operational force acting in the working direction (A) between the first and the second unit may be at least partly compensated. The actuator is pneumatically operated and comprises an air spring for vibration isolation. A working piston in an air spring percussion device on the working tool serves to supply compressed air for the air spring. Alternatively, the compressed air can be supplied by the oscillating relative movement between the first unit and the second unit.Type: ApplicationFiled: July 13, 2004Publication date: February 15, 2007Inventors: Rudolf Berger, Wolfgang Schmid, Otto Stenzel
-
Patent number: 5425047Abstract: An induction furnace with a crucible having a crucible axis, an induction coil and a furnace body containing a gas-tight jacket, and also with a cover which can be placed on the furnace body and has at least one gas connection, a charging valve and a pouring apparatus, the furnace body and cover being joined together releasably but hermetically by a flange connection, and being journaled in the joined state in a furnace frame by a tilting mechanism which engages the cover, and after the flange connection is separated the cover body can be removed from the furnace body which remains in the furnace frame.Type: GrantFiled: March 25, 1993Date of Patent: June 13, 1995Assignee: Leybold Durferrit GmbHInventors: Ulrich Betz, Hans Kemmer, Martin Lorke, Klaus Pfeuffer, Otto Stenzel
-
Patent number: 5271033Abstract: A furnace chamber contains a chassis to which a closure plate for said chamber is removably fixed. A tilting frame is borne by said chassis in a pair of coaxial tilting bearings, one of which incorporates a rotary lead through for power lines and cooling lines to an induction coil surrounding a crucible on the tilting frame. The chassis includes a pair of rails which are movable horizontally on wheels mounted to the floor of the furnace chamber.Type: GrantFiled: August 11, 1992Date of Patent: December 14, 1993Assignee: Leybold Durferrit GmbHInventors: Daniel Bethge, Alfred Henn, Michael Schaefer, Hans-Johann Kemmer, Otto Stenzel
-
Patent number: 5109389Abstract: An apparatus for melting metallic stock as a crucible in which the metallic stock is received and melted, the stock in the crucible having an axis along which the force of gravity varies, and an inductive heating system which generates an inductive heating field having an inductive power density which varies along the axis. The inductive heating field interacts with the metallic stock in the crucible so that the radiation energy generated by the inductive heating field counteracts the hydrostatic pressure of the melt in the crucible.Type: GrantFiled: March 26, 1990Date of Patent: April 28, 1992Inventor: Otto Stenzel
-
Patent number: 5021299Abstract: Method for the charging and controlled addition of pre-alloys to molten alloys of metals reactive and nonreactive at room temperature which are held in a crucible. To permit pre-alloys with a high percentage of reactive metal to be handled more easily, a casting is produced from the reactive and nonreactive metals by a casting process followed by solification. This casting is nonreactive at its surface at room temperature and its average content of reactive metal is equal to or greater than the reactive metal content in the crucible. Such castings are added to the crucible according to the need for the reactive metal. In an especially advantageous manner, a casting produced in a casting mold in a nonreactive atmosphere has at least at its surface such a content of nonreactive metal that it is stable at room temperature.Type: GrantFiled: January 2, 1990Date of Patent: June 4, 1991Assignee: Leybold AktiengesellschaftInventors: Hartwig Rupp, Otto Stenzel
-
Patent number: 4993690Abstract: An electroslag remelting plant includes an ingot mold 4 for forming a block from remolten material, at least one consumable electrode 26, a body having at least one vertically driven electrode rod 20 for the advance of the consumable electrode and a hood 33 disposed above the ingot mold which has at least one concentric opening toward the respective electrode axis. In order to limit the volume over the slag the following is provided: The hood 33 is, with respect to its vertical axis "A", subdivided into laterally movable sectors 34, 35 each of which is, at a first sealing joint 41, gas-tight connected with its lower edge 40 to top of the ingot mold 4 as far as possible and with its upper edge 39, at a second sealing joint 42, gas-tight sealed as far as possible with respect to the electrode rod. Further, the hood 33 has an interior of such cross section and height that, in its most elevated position, the top end of the at least one consumable electrode 26 is below the second sealing joint 42 of the hood 33.Type: GrantFiled: August 9, 1989Date of Patent: February 19, 1991Assignee: Leybold AktiengesellschaftInventors: Otto Stenzel, Wolfram Diemar, Heiko Spengemann, Heinz Kohnert, Leo Emiljanow, Helmut Grof
-
Patent number: 4919187Abstract: Method for the charging and controlled addition of prealloys to molten alloys of metals reactive and nonreactive at room temperature which are held in a crucible. To permit pre-alloys with a high percentage of reactive metal to be worked more easily, a casting is produced from the reactive and nonreactive metals by a casting process followed by solidification. This casting is nonreactive at its surface at room temperature and its average content of reactive metal is equal to or greater than the reactive metal content in the crucible. Such castings are added to the crucible according to the need for the reactive metal. In an especially advantageous manner, a casting produced in a casting mold in a nonreactive atmosphere has at least at its surface such a content of nonreactive metal that it is stable at room temperature.Type: GrantFiled: August 9, 1988Date of Patent: April 24, 1990Assignee: Leybold Heraeus GmbHInventors: Hartwig Rupp, Otto Stenzel
-
Patent number: 4881239Abstract: Apparatus for the detection and evaluation of process parameters arising during the remelting of an electrode (31) to a metallic block (32) in a vacuum arc furnace detects deviations of at least one process parameter from a predetermined course and uses them to locate faults in the electrode and/or in the metal block (32).Type: GrantFiled: June 2, 1988Date of Patent: November 14, 1989Assignee: Leybold AktiengesellschaftInventors: Otto Stenzel, Felix Muller, Gerhard Bruckmann, Alok Choudhury
-
Patent number: 4797897Abstract: Apparatus for controlling the distance of a melting electrode from the surface of melted material in a vacuum arc furnace which uses short circuits caused by the droplets between the melting electrode and the surface of the melted material as a control criterion. The short circuits occurring within a given period of time--the so-called droplet rate--are determined and supplied to an averager which is connected with a controller that controls an electric driving mechanism for the melting electrode. According to the invention, the controller is responsive to a signal representing the difference between the reciprocal value of the droplet rate signal formed by the averager and a desired time, this desired time being equal to the desired average time between two consecutive droplet short circuits.Type: GrantFiled: August 10, 1987Date of Patent: January 10, 1989Assignee: Leybold AktiengesellschaftInventors: Otto Stenzel, Friedrich-Werner Thomas
-
Patent number: 4767452Abstract: Process and equipment for separating molten metals with a distillation part (1) and a condenser part. The metal vessel (12) of the distillation part (1) is tiltable about at least one horizontal articulated axle (15) and is connected to a drive mechanism (18) for generating periodic tilting motions. In this way, it is possible to keep the melt in motion by means of a rocking motion of the melt vessel and to improve the distillation effect and reduce the distillation time.Type: GrantFiled: July 3, 1986Date of Patent: August 30, 1988Assignee: Leybold-Heraeus GmbHInventor: Otto Stenzel
-
Patent number: 4742528Abstract: A compensation device for the influence of the weight of a power feed line on a weight measurement device determining the weight of an electrode and/or the melting rate in an electro-slag remelting process, in a vacuum arc furnace or the like. When an x-y device is adjusted, a weight jump occurs due to the forces of the power cable or the forces of the bellows, which has a disturbing effect on the rate definition. This weight jump can be prevented by means of mechanical devices, or can be made so small that it no longer constitutes a disturbance. However, the expenditure for this is disproportionately high. The invention is more cost efficient, since hardware or software means suffice. The weight function G=f(t) is extrapolated and compared with the actually measured weight G'=f(t). The magnitude of the difference between the two is stored and later added as a correction value.Type: GrantFiled: August 12, 1986Date of Patent: May 3, 1988Assignee: Leybold-Heraeus GmbHInventor: Otto Stenzel
-
Patent number: 4658404Abstract: Disclosed is an induction furnace with a furnace bottom comprising a crucible, an induction winding and a gas-tight casing, also having a lid, for the furnace bottom, which lid has at least one gas connection, a charging valve and a pouring arrangement. The furnace bottom and lid are connected by a flange joint and tiltably mounted by means of a picot bearing and a drive about a tipping axis in a furnace stand. The pivot bearing is secured to the lid, the tipping mechanism engages the lid, and the furnace bottom is separable from the lid by unfastening the flange joint, the lid remaining in the furnace stand.Type: GrantFiled: August 18, 1986Date of Patent: April 14, 1987Assignee: Leybold-Heraeus GmbHInventors: Georg Sick, Otto Stenzel, Heinz Kohnert, Hans-Johann Kemmer
-
Patent number: 4639567Abstract: Method and apparatus for melting rod-shaped material 12. This is continuously displaced in the direction of the rod axis towards an induction coil (5), disposed at the lower end (12a) of the rod, which has an opening coaxial with the rod and which is supplied with an alternating current. An induction coil (5) is used of which the axial dimension is several times smaller than the radial dimension. Preferably, a so-called flat-coil is used. The induction coil has an opening (5c) which is smaller than the rod diameter. On melting the lower end (12a) of the rod is held with its end face at a substantially constant spacing above the induction coil (5). The method and apparatus are suitable for the production of metal powder and for the direct production of shaped parts.Type: GrantFiled: September 11, 1985Date of Patent: January 27, 1987Assignee: Leybold-Heraeus GmbHInventor: Otto Stenzel
-
Sliding contact arrangement for transmitting heavy currents from and to bus bars with slide surfaces
Patent number: 4509807Abstract: A sliding contact arrangement for transmitting heavy currents to and from a bus bar has a cage with conductive contact faces and an arrangement to cause a conductive sliding contact to bear on the bus bar and only one of the contact faces.Type: GrantFiled: August 27, 1982Date of Patent: April 9, 1985Assignee: Leybold Heraeus GmbHInventors: Uwe Reimpell, Otto Stenzel -
Patent number: 4495624Abstract: A graphite nipple projecting from one end of a graphite electrode portion of the type used in an electric furnace has a supporting face for receiving a non-graphite portion of a clamping device in shape-locking engagement for holding the electrode for use. It also has a conventional screw-thread surface for joining the nipple to another electrode portion for extending the electrode. The supporting face does not alter the conventional screw-thread surface arrangement for joining electrode portions so that specially-shaped and thus costly electrode-supporting nipples are not required in addition to the conventionally-shaped nipples for joining electrode portions, and a graphite screw-thread does not have to be unscrewed for the same, which unscrewing frequently broke the nipple or electrode portion.Type: GrantFiled: November 16, 1981Date of Patent: January 22, 1985Inventors: Uwe Reimpell, Anton Wamser, Otto Stenzel, Wilhelm Burgmann