Patents Assigned to Herion-Werke KG
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Patent number: 5741002Abstract: A control valve includes a valve body having an inlet port and an outlet port which receives an orifice plate mounted to the valve body. Set within the valve body is a plunger which cooperates with the orifice plate to selectively communicate the inlet port with the outlet port. The plunger is acted upon by a stem for displacement in an axial direction between a closing position and an opening position and provided with a servo system for maintaining the desired position of the plunger. The servo system includes a slide gate which is connected to the stem and opens and closes the fluid passageways between the inlet port, outlet port and a pressurizing chamber above the plunger.Type: GrantFiled: December 21, 1995Date of Patent: April 21, 1998Assignee: Herion-Werke KGInventor: Karl Breyer
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Patent number: 5428496Abstract: An electronic switching arrangement for controlling a coil includes a capacitor for energizing the coil by momentarily passing a current therethrough so as to generate a required attractive force for movement of the armature. After movement of the armature, only a lower holding current is supplied. Arranged parallel to the coil is a voltage divider which cooperates with a transistor to detect and evaluate an unintentional movement of the armature.Type: GrantFiled: September 27, 1993Date of Patent: June 27, 1995Assignee: Herion-Werke KGInventor: Heinz-Dieter Buchta
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Patent number: 5361802Abstract: A valve block, in particular for aggressive fluids and/or fluids of increased temperature, includes a plurality of valve cartridges and an adapter for attachment of the plurality of valve cartridges. The adapter includes passageways for communication with each individual valve cartridge. The adapter is made of plastic material through an injection molding process and includes fittings for attachment of hoses, with the fittings being injection molded and fixed to the adapter through ultrasonic welding. At a location before and behind each valve cartridge are metallic electrodes fitted in the adapter and electrically connected to an analyzer so as to form an electric circuit which is closed by the electrically conductive fluid in order to allow each valve cartridge to be monitored for leaks.Type: GrantFiled: September 23, 1992Date of Patent: November 8, 1994Assignee: Herion-Werke KGInventors: Dieter Kroll, Jurgen Weber
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Patent number: 5276336Abstract: The invention relates to a method and an arrangement for selective driving of valves of small drive power by means of light. A control generates control signals which are modulated onto a light source which emits said control signals which are received by all the valves via solar cells. However only the addressed valve is switched. No cabling is necessary between the control and the valves.Type: GrantFiled: May 19, 1992Date of Patent: January 4, 1994Assignee: Herion-Werke KGInventor: Peter Winterhalter
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Patent number: 5243158Abstract: A pressure switch for controlling a switching element includes a spring-loaded piston operatively connected to the switching element and acted upon by a pressure fluid. A diaphragm separates the piston from the pressure fluid for providing a leaktight closure of the working parts of the pressure switch from the fluid stream, with a support ring surrounding the piston and being arranged axially between the diaphragm and a bushing by which the piston is guided in an axial direction.Type: GrantFiled: May 26, 1992Date of Patent: September 7, 1993Assignee: Herion Werke KGInventor: Klaus Zimmermann
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Patent number: 5215114Abstract: A safety valve for preventing overpressure in plants operating with gaseous and/or vaporous and/or liquid fluids and/or mixtures includes a valve body with a valve seat and a valve member which controls the valve seat and includes a seat valve and a valve piston securely fixed to the seat valve at a distance thereto.Type: GrantFiled: October 23, 1991Date of Patent: June 1, 1993Assignee: Herion-Werke KGInventor: Karl Breyer
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Patent number: 5138292Abstract: In an electromagnet of a type including a coil and a ferromagnetic circuit which are arranged in a casing of plastic material or metal, the coil and the ferromagnetic circuit are embedded in an inner casting compound for purposes of fixation and electrical insulation, with a permanently elastic outer casting compound being arranged over the inner casting compound.Type: GrantFiled: March 8, 1991Date of Patent: August 11, 1992Assignee: Herion Werke KGInventor: Joachim Forster
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Patent number: 4950985Abstract: An apparatus for measuring the electromagnetic values of a coil, in particular for measuring the position of the armature of a coil/armature magnetic system includes a capacitor connected parallel at an arbitrary location to a supply line for the coil so as to define a parallel resonant circuit containing inductance of the coil and capacitance of the capacitor. An exciting frequency is introduced into the parallel resonant circuit by a transducer which is connected to the supply line. In addition, an evaluation instrument is connected to the supply line for determining the resonant frequency of the parallel resonant circuit and thus the position of the armature of the coil/armature magnetic system.Type: GrantFiled: December 6, 1988Date of Patent: August 21, 1990Assignee: Herion-Werke KGInventors: Thomas Voss, Peter Winterhalter, Gunter Feier
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Patent number: 4903729Abstract: A hydraulic safety valve which is controlled by two electromagnetically actuatable pilot valves is provided with two valve bodies movable in opposite direction towards each other and including control pistons for regulating the connection between one pump port, two working ports and two tank ports. Upon occurrence of a faulty switching, the valve bodies move into a hydraulically locked end position. One of both pilot valves is designed as a proportional pressure differential valve and the control pistons associated therewith are provided with fine control notches so that the valve can be proportionally controlled to thereby allow a control of the pressure buildup, the speed and direction of motion of a consumer which is connected to the valve.Type: GrantFiled: April 26, 1989Date of Patent: February 27, 1990Assignee: Herion-Werke KGInventor: Helmut Motzer
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Patent number: 4903728Abstract: A hydraulic safety valve which is controlled by electromagnetically actuated pilot valves includes two valve bodies movable in opposite direction towards each other for regulating the connections between a pump port, two working ports and two tank ports. Upon occurrence of a faulty switching, both valve bodies are moved in a hydraulically locked end position so that the safety valve can be operated again only after eliminating the malfunction. By coupling the safety valve with a proportional pressure reducing valve, the pressure buildup and the speed of a consumer which is connected to the safety valve can be controlled.Type: GrantFiled: April 26, 1989Date of Patent: February 27, 1990Assignee: Herion-Werke KGInventor: Helmut Motzer
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Patent number: 4903727Abstract: A hydraulically actuated safety valve includes two electromagnetically actuable pilot valves and is provided with two coaxial valve bodies movable in opposite direction towards each other. One of both pilot valves is designed as a proportional pressure differential valve and one of both valve bodies is provided with fine control notches. Thus, upon suitable actuation of the proportional pressure differential valve, the fine control notches clear a respective cross-section between the pump port and the working port and between the working port and the tank port to thereby allow a control of the speed and pressure buildup of a consumer such as e.g. a cylinder or a motor which is connected to the working port.Type: GrantFiled: April 26, 1989Date of Patent: February 27, 1990Assignee: Herion-Werke KGInventor: Helmut Motzer
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Patent number: 4840198Abstract: A directional control valve includes a housing with a pressure inlet port, two working ports and a vent port with one working port directly connected to the vent port and the other working port communicating with the vent port via a control piston. The control piston includes a sliding valve in the area of one working port and a seat valve in the area of the other working port. A throttle bush rotatably arranged in the housing and a throttle screw rotatable relative to the throttle bush cooperate with the control valve to modify and throttle separately and independently from each other the cross sectional ventilating areas for the working ports.Type: GrantFiled: January 14, 1988Date of Patent: June 20, 1989Assignee: Herion-Werke KGInventor: Helmut Ott
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Patent number: 4821773Abstract: A directional control valve for liquid and gaseous fluids includes a valve piston and magnets controlling the valve piston and arranged at a distance at the end faces of the valve piston to define respective chambers therebetween. Flow forces prevailing during operation of the control valve and opposing the actuation force of the magnets are countered by providing a throttle in the connections to the tank to create a dynamic pressure to support the magnetic force. In order to limit the magnitude of the hydraulic force as provided by the dynamic pressure, the chambers in front of the end faces of the valve piston are connected to each other via two passageways in which a pressure relief valve is respectively arranged.Type: GrantFiled: March 7, 1988Date of Patent: April 18, 1989Assignee: Herion-Werke KGInventors: Erich Herion, Helmut Motzer
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Patent number: 4748896Abstract: A safety valve assembly for regulating the flow of a fluid under pressure to a fluid operated system e.g. a double acting cylinder element includes a housing with an inlet port, outlet ports and working ports and accommodating a pair of parallel valve spindles which are controllable by respective pilot valves so as to be shiftable between two valve positions. Each valve spindle is provided with a working piston, valve piston and a control piston which cooperates with a respective valve seat as defined by the housing. The control pistons of the valve spindles are successively disposed in a passageway extending between one of the working ports and one of the outlet ports.Type: GrantFiled: March 17, 1987Date of Patent: June 7, 1988Assignee: Herion-Werke KGInventors: Helmut Ott, Gunter Baldauf
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Patent number: 4714007Abstract: A shuttle piston cylinder includes a piston reciprocating in axial direction within the cylinder and carrying a transmission element which transmits the movement of the piston to a consumer and extends through a longitudinal slot of the cylinder barrel. A sealing band extends within the slot with one side stationary arranged against one wall of the slot and including two spaced flexible sealing lips which seal the slot towards the inside and the exterior by lying against the other wall of the slot. The transmission element is provided with slantingly extending shanks which during passage of this element lift the sealing lips from the sealing surfaces. Through inherent prestress, the sealing lips again are arranged on the sealing surfaces after passage of the transmission element.Type: GrantFiled: March 18, 1986Date of Patent: December 22, 1987Assignee: Herion-Werke KGInventor: Dieter Maisch
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Patent number: 4706548Abstract: A two hand safety control mechanism for a consumer actuated by pressure medium includes a safety valve blocking the supply of pressure medium during a faulty switching and venting the consumer. For maintaining a working position of the consumer, a plurality of control valves are provided which are dynamically self-regulating. By actuating a further control valve, the automatic retention can be cancelled in order to allow the consumer to return in its idle position.Type: GrantFiled: August 18, 1986Date of Patent: November 17, 1987Assignee: Herion Werke KGInventors: Gunter Baldauf, Helmut Ott
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Patent number: 4707278Abstract: A control valve includes a valve box whose interior accommodates a valve needle closing against a valve seat. The interior of the valve box is subdivided in sections with at least two conical bores with different cone angles for improving the flow guidance and providing more uniform velocity distribution.Type: GrantFiled: December 2, 1985Date of Patent: November 17, 1987Assignee: Herion-Werke KGInventors: Karl Breyer, Roland Tesar
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Patent number: 4685383Abstract: The invention relates to a shuttle piston cylinder whose axially moving piston carries a power transmission element projecting out through a longitudinal slot in the wall of the cylinder barrel. A flexible seal band looped through the power transmission element seals off the slot in the parts thereof between the ends of the cylinder and the piston. The seal band is made in one piece and has a sealing lip that causes a sealing effect when acted upon by internal pressure. Furthermore the seal band has beads that are able to lock into the longitudinal slot of the barrel and hold the band therein and furthermore act to keep out dirt from the cylinder. Preferably the flexible band is reinforced by a steel band that is partly embedded in the seal band or is bonded by vulcanization onto the inner face thereof.Type: GrantFiled: August 13, 1985Date of Patent: August 11, 1987Assignee: Herion-Werke KGInventor: Erich Ruchser
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Patent number: 4565209Abstract: The invention relates to a pressure regulating valve for pneumatic and hydraulic pressure media wherein a higher primary pressure is regulated to a desired lower secondary pressure. The valve comprises a primary connection, a secondary connection and a relief connection, there being a switch valve between the primary connection and the secondary connection, a relief valve between the secondary connection and the relief connection, and a control connection for controlling the operation of the valve in response to an external controlled quantity. The controlled quantity may be the secondary pressure output of the valve, or may be another pressure or a mechanical displacement of a larger system.Type: GrantFiled: February 9, 1984Date of Patent: January 21, 1986Assignee: Herion-Werke KGInventors: Erich Ruchser, Helmut Ott
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Patent number: 4555977Abstract: A valve device for controlling and monitoring an operating pressure in a hydraulically operated consumer arrangement, such as a tool chuck or head stock of a machine tool, includes a pressure reducing valve coupled to the consumer device and a servo valve connected to the pressure reducing valve for adjusting the operating pressure to a maximal allowable value. The servo valve is in turn connected to a flow monitoring device which upon reduction of operating pressure in the consumer device generates an electrical signal which is used for shutting off the consumer device.Type: GrantFiled: August 29, 1983Date of Patent: December 3, 1985Assignee: Herion-Werke KGInventor: Helmut Motzer