Patents by Inventor Dieter Tischer
Dieter Tischer 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: 6457376Abstract: A travel measuring and control device for a vehicle transmission has a measuring arrangement with one or more measuring elements cooperating with a selector shaft of the transmission and with a measuring device cooperating with the measuring element. The measuring element has one or more measuring surfaces having an incline in an axial direction and in a rotational direction of the selector shaft. An adjustable sensing element rests against the measuring surface and is operatively connected with the measuring device. The measuring element is preferably axially fixedly seated on the selector shaft or an extension of the selector shaft and preferably fixedly seated on the selector shaft or the extension thereof so as to rotate with the selector shaft or extension.Type: GrantFiled: June 23, 2000Date of Patent: October 1, 2002Assignee: Hydraulik-Ring GmbHInventor: Dieter Tischer
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Patent number: 6374784Abstract: A valve control mechanism for intake and exhaust valves of internal combustion engines is provided. The valve control mechanism has at least one piezo element, at least one valve element operated thereby, and at least one adjustment piston. Inflow and outflow of a pressure medium to the adjustment piston is controlled by the valve element. The adjustment piston is moveable by the pressure medium, against a counter pressure, for opening an intake or exhaust valve.Type: GrantFiled: November 12, 1999Date of Patent: April 23, 2002Assignee: Hydraulik-Ring GmbHInventors: Dieter Tischer, Alfred Trzmiel, Dieter Maisch, Herbert Panowitz
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Patent number: 6223617Abstract: A control device for a transmission of a motor vehicle has a housing and actuators with which a rotary or linear movement of a gear shifting shaft of the transmission is performed in order to select gates and gears of the transmission. The actuators are arranged adjacent and parallel to one another in the housing.Type: GrantFiled: September 11, 1998Date of Patent: May 1, 2001Assignee: Hydraulik-Ring GmbHInventors: Dieter Tischer, Roland Meyer
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Patent number: 6223763Abstract: A hydraulic system for a vehicle including a distributor, or switch, valve for actuating at least two operational areas and supplying the two areas with sufficient amounts of hydraulic medium is provided. The distributor, or switch, valve preferably comprises a flow regulator valve and a solenoid valve, which function so that the supply of hydraulic medium to the steering system always has priority, ensuring that the vehicle is steerable in any situation. When the steering system is operational, the supply of hydraulic medium to other operational areas, such as the clutch and transmission systems, is completely blocked by operation of the switch valve. If, however, the clutch and transmission systems should require hydraulic medium during operation of the steering system, the switch valve allows a small portion of hydraulic medium to be supplied to the clutch and transmission as well.Type: GrantFiled: July 30, 1999Date of Patent: May 1, 2001Assignee: Hydraulik-Ring GmbHInventors: Roland Meyer, Andreas Knecht, Dieter Tischer, Bernd Niethammer, Alfred Trzmiel
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Patent number: 6222360Abstract: An arrangement is provided for determining the position of an object of measurement without contacting the object. The arrangement includes a sensor element that reacts to magnetic forces, and along which the object can be displaced. The sensor element is provided with at least one release element, which has two magnets that are fixed relative to one anther, are spaced from one anther, and are disposed in a vicinity adjacent to the sensor element. One of the magnets, in order to produce a unilaterally enlarged virtual air gap, is rotated by a given angle relative to the other magnet.Type: GrantFiled: February 12, 1999Date of Patent: April 24, 2001Assignee: Hydraulik-Ring GmbHInventors: Dieter Tischer, Alfred Trzmiel
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Patent number: 6205964Abstract: A damping device for an electromagnetic valve control of an internal combustion engine has a pressure chamber, a hydraulic supply line communicating with a first pressure chamber and supplying the pressure chamber with a hydraulic medium. A damping piston is positioned at one side of the pressure chamber and is moveable relative to the pressure chamber. A moveable mass acts on the damping piston. When the damping piston is moved in a first direction by the moveable mass from a rest position into the first pressure chamber, the hydraulic medium is initially displaced from the pressure chamber into the hydraulic supply line until the hydraulic supply line is closed off by the damping piston and a hydraulic pressure is generated in the pressure chamber to create a force acting counter to the movement of the moveable mass.Type: GrantFiled: July 30, 1999Date of Patent: March 27, 2001Assignee: Hydraulik-Ring GmbHInventors: Dieter Maisch, Dieter Tischer, Alfred Trzmiel
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Patent number: 6164182Abstract: An actuating device for automation of a manual transmission of a vehicle has a housing in which a first main piston and a second main piston are slidably supported. A control lever, fixedly connected to the actuator shaft of the manual transmission, is provided to select a gate of the manual transmission. The control lever is positioned between the first and second main pistons. A first valve hydraulically controls and actuates the first main piston by a hydraulic medium. A second valve hydraulically controls and actuates the second main piston by the hydraulic medium.Type: GrantFiled: January 23, 1998Date of Patent: December 26, 2000Assignee: Hydraulik-Ring Antriebs-und Steuerungstechnik GmbHInventors: Dieter Tischer, Roland Meyer
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Patent number: 5957028Abstract: An actuator for a gear shifting mechanism of a motor vehicle has a housing with pressure chambers and one connector opening into each pressure chamber for supplying a pressure medium into the pressure chambers. A control member is positioned in the housing so as to be axially displaceable in the housing by the pressure medium into different switching positions. A first and second auxiliary piston are supported on the control member and displaceable relative to the control member by the pressure medium. The first auxiliary piston has a first end facing away from the second auxiliary piston, the first end of the first auxiliary piston having a first abutment. The second auxiliary piston has a first end facing away from the first auxiliary piston, the first end of the second auxiliary piston having a first abutment. The first auxiliary piston delimits at least partially the first pressure chamber and the second auxiliary piston delimits at least partially the second pressure chamber.Type: GrantFiled: May 2, 1997Date of Patent: September 28, 1999Assignee: Hydraulik-Ring Antriebs- und Steuerungstechnik GmbHInventors: Dieter Tischer, Roland Meyer
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Patent number: 5916326Abstract: A control device for automatically operating a transmission of a vehicle has at least one actuator for moving a selector shaft of the transmission by rotation and axial translatory movement in order to select a gate and a gear of the manual transmission. A control member is coupled to the at least one actuator so as to be rotated by the at least one actuator. The control member includes a gate change for effecting the axial translatory movement of the selector shaft and a control path for rotating the selector shaft.Type: GrantFiled: March 18, 1997Date of Patent: June 29, 1999Assignee: Hydraulik-Ring Antriebs- und Steuerungstechnik GmbHInventor: Dieter Tischer
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Patent number: 5878622Abstract: An actuating device for automatically operating a manual transmission of a vehicle includes at least two gear and shift actuators for moving by rotation and translatory movement a selector shaft of a manual transmission in order to select a gate and a gear of the manual transmission. Each one of the gear and shift actuators includes a first piston that upon displacement moves by rotation or translatory movement the selector shaft.Type: GrantFiled: February 21, 1997Date of Patent: March 9, 1999Assignee: Hydraulik--Ring Antriebs- und Steuerungstechnik GmbHInventor: Dieter Tischer
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Patent number: 5722297Abstract: An actuator system for a gear shifting mechanism with a gear shifting shaft of a motor vehicle has a first actuator having a first control member moveable into various first switching positions and a second actuator having a second control member moveable into various second switching positions. One of the first and second actuators displaces the gear shifting shaft in the axial direction of the gear shifting shaft and the other of the first and second actuators rotates the gear shifting shaft. The first and second control members have axes positioned parallel to one another. A kinematic coupling device connects the first and second control members and the gear shifting shaft.Type: GrantFiled: March 4, 1996Date of Patent: March 3, 1998Assignee: Hydraulik-Ring Antrieb- und Steuerungstechnik GmbHInventors: Dieter Tischer, Roland Meyer
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Patent number: 5706712Abstract: An adjusting drive for a transmission of a motorized vehicle has a housing and an adjusting member supported within the housing. The adjusting member has at least three control positions. The housing has at least two valve-controlled connecting adapters for supplying a pressure medium to the housing and loading the adjusting member on two sides. A gear shifting shaft is coupled to the adjusting member.Type: GrantFiled: April 8, 1994Date of Patent: January 13, 1998Assignee: Hydraulik-Ring Antriebs- und Steuerungstechnik GmbHInventors: Dieter Tischer, Alfred Trzmiel
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Patent number: 5623852Abstract: An adjusting drive system for a transmission of a motorized vehicle has a gear shifting shaft and a first and a second adjusting drive operatively connected to the gear shifting shaft. The first adjusting drive rotates the gear shifting shaft and the second adjusting drive axially displaces the gear shifting shaft. The adjusting drives may be linear drives or rotary drives with respective axially displaceable adjusting members or rotary adjusting members. The adjusting drive system may also have at least two gear shifting shafts and at least two adjusting drives whereby one of the adjusting drives is respectively connected to one of the gear shifting shafts.Type: GrantFiled: April 8, 1994Date of Patent: April 29, 1997Assignee: Hydraulik-Ring Antriebs- und Steuerungstechnik GmbHInventors: Dieter Tischer, Alfred Trzmiel
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Patent number: 5603244Abstract: An actuating device for a throttle valve of a carburetor used in connection with an automatic transmission, wherein the throttle valve is connected to a throttle shaft and a position of the throttle shaft is adjustable by the accelerator pedal of the vehicle, has a linkage including a first part and a second part. The first part is connected to the throttle shaft and the second part is connected to the accelerator pedal. During an automatic gear shifting operation the first part is displacable relative to the second part with a pressure medium. The first part is preferably a piston with a piston rod whereby the piston is loaded by the pressure medium. The second part includes a housing in which the position is displacably arranged.Type: GrantFiled: July 29, 1994Date of Patent: February 18, 1997Assignee: Hydraulik-Ring Antriebs-und Steuerungstechnik GmbHInventor: Dieter Tischer
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Patent number: 5417241Abstract: A valve arrangement is so constructed that a pressure limitation is attainable with minimal parts expenditure and without additional structural volume in a cost advantageous manner. On a shift piston of a pathway valve, a valve member of a pressure valve is arranged therewith. The pressure valve is installed within the structural volume of the pathway valve. Via a slight modification of the shift piston of the pathway valve and installation of the valve member as a single additional structural part there is eliminated additional pressure valve structure and system connection thereof necessary with known valve arrangement. With that the inventive valve arrangement fulfills preconditions made as to a mass product including particularly nominal structural volume, nominal number of structural parts, nominal disturbance susceptibility and extremely cost-advantageous production manufacturing.Type: GrantFiled: April 15, 1993Date of Patent: May 23, 1995Assignee: Hydraulic-Ring Antriebs-und Steuerungstechnik GmbHInventors: Dieter Tischer, Bernd Neithammer
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Patent number: 5398594Abstract: A volume flow control for a hydraulic system of a vehicle has a pump for supplying a main consuming device and an auxiliary consuming device with a hydraulic medium. A valve having a main connection for connecting the pump to the main consuming device an auxiliary connection for connecting the pump to the auxiliary consuming device and is provided. The valve has a main piston with a throttle and an auxiliary piston positioned downstream of the throttle. The throttle is positioned within the auxiliary connection. The auxiliary connection is pressurized by the main piston. The auxiliary piston has a first end face, subjected to the operational pressure of the hydraulic medium, and a second end face, biased by at least one pressure spring and subjected to a reduced pressure of the hydraulic medium caused by the throttle.Type: GrantFiled: November 10, 1993Date of Patent: March 21, 1995Assignee: Hydraulik-Ring Antriebs- und Steuerungstechnik GmbHInventors: Dieter Tischer, Bernd Niethammer
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Patent number: 5323809Abstract: A hydraulic solenoid valve includes a valve housing with bores for receiving a hydraulic medium and having at least one consuming device connection and a return connection connected to the bores. A piston is connected within the valve housing and has at least one piston bore. A first valve with a corresponding valve seat is connected to the piston for opening and closing the piston bore. The first valve in its open position provides communication between the consuming device connection and the reservoir connection. A magnet housing has connected therein an armature. When the armature is displaced during normal operation in both directions, it rests at the first valve and forces the first valve into its valve seat. A return spring is positioned between the piston and the valve housing. The armature is displaceable by the force of the return spring. The piston is displaceable by the armature against the force of the return spring.Type: GrantFiled: October 9, 1992Date of Patent: June 28, 1994Assignee: Hydraulik-Ring GmbHInventors: Dieter Tischer, Bernd Niethammer
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Patent number: 5301781Abstract: A vehicle clutch is comprised of a supply cylinder activated by a clutch pedal and a receiving cylinder for hydraulic fluid displaced from the supply cylinder when the clutch pedal is pressed down. A fluid line connects the two cylinders. A safety device is connected within the fluid line and comprises at least one throttle element for reducing the fluid flow from the receiving to the supply cylinder when a preset engaging speed for engaging the clutch is surpassed. The safety device includes a measuring orifice connected in parallel to the throttle element. A solenoid is provided which has a closing device for closing the fluid line between the two cylinders with the exception of the throttle element when a preset fluid pressure differential measured before and behind the measuring orifice is surpassed. Two pressure switches are coordinated with the measuring orifice for measuring the fluid pressure differential at the measuring orifice.Type: GrantFiled: December 22, 1992Date of Patent: April 12, 1994Assignee: Hydraulik-Ring Antriebs- und Steuerungstechnik GmbHInventors: Dieter Tischer, Bernd Niethammer, Alfred Trzmiel