Patents by Inventor Dieter Ruf
Dieter Ruf 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: 8769785Abstract: The invention relates to methods for simultaneously producing crimped fiber strips in parallel, in particular filter tow strips, in a crimping machine (KM) having an inlet region (3), a squeezing zone (6) formed between two transport rollers (4, 5), and a compression channel (7), comprising the following steps: a) simultaneously feeding in parallel a plurality of fiber strips (1, 2) via the inlet region (3), wherein the fiber strips are guided separately in the inlet region (3), using a first separating device (31), b) simultaneously transporting and compacting in parallel the fiber strips in the squeezing zone (6) by way of the two transport rollers (4, 5), and c) simultaneously crimping in parallel the fiber strips in the compression channel (7), wherein the fiber strips are guided separately in method step b) by using a second separating device (61) and in method step c) by using a third separating device (71), and wherein the first, second and third separating devices (31, 61, 71) are designed such that tType: GrantFiled: February 18, 2010Date of Patent: July 8, 2014Assignee: Rhodia Acetow GmbHInventors: Thomas Krumrey, Dieter Ruf, Martin Moser
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Publication number: 20120013036Abstract: The invention relates to methods for simultaneously producing crimped fibre strips in parallel, in particular filter tow strips, in a crimping machine (KM) having an inlet region (3), a squeezing zone (6) formed between two transport rollers (4, 5), and a compression channel (7), comprising the following steps: a) simultaneously feeding in parallel a plurality of fibre strips (1, 2) via the inlet region (3), wherein the fibre strips are guided separately in the inlet region (3), using a first separating device (31), b) simultaneously transporting and compacting in parallel the fibre strips in the squeezing zone (6) by way of the two transport rollers (4, 5), and c) simultaneously crimping in parallel the fibre strips in the compression channel (7), wherein the fibre strips are guided separately in method step b) by using a second separating device (61) and in method step c) by using a third separating device (71), and wherein the first, second and third separating devices (31, 61, 71) are designed such that tType: ApplicationFiled: February 18, 2010Publication date: January 19, 2012Applicant: RHODIA ACETOW GMBHInventors: Thomas Krumrey, Dieter Ruf, Martin Moser
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Patent number: 5668724Abstract: A method for improving the controllability of motor vehicles during braking wherein desired slip values are determined and adjusted with the aid of a wheel slip controller. According to the method, the following are measured: the yaw rate .psi., the steering angle .delta., the wheel speeds V.sub.Ri, the inlet pressure P.sub.inlet or wheel brake pressure P.sub.i, and, if required, the engine speed and the throttle valve angle. The following variables are estimated using the measured values: the longitudinal vehicle speed V.sub.X, the longitudinal vehicle acceleration V.sub.X, the wheel slip values .lambda..sub.i, the braking forces F.sub.Bi, the tire forces F.sub.Ri, and the transverse speed V.sub.Y. Desired slip values .lambda..sub.i * are then determined from these measured and estimated variables with the aid of a simple vehicle model and supplied to the slip controller to control the vehicle wheel brake pressure.Type: GrantFiled: September 11, 1995Date of Patent: September 16, 1997Assignee: Robert Bosch GmbHInventors: Thomas Ehret, Friedrich Kost, Uwe Hartmann, Rainer Erhardt, Anton Van Zanten, Gerd Busch, Karl-Josef Weiss, Wolf-Dieter Ruf
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Patent number: 5480219Abstract: A required yaw rate value is determined based on driver inputs such as steering angle, master cylinder pressure, and throttle butterfly angle. The required yaw rate is compared to a measured actual yaw rate value and the actual yaw moment acceleration is influenced based on the comparison.Type: GrantFiled: August 18, 1994Date of Patent: January 2, 1996Assignee: Robert Bosch GmbHInventors: Friedrich Kost, Wolf-Dieter Ruf, Uwe Hartmann, Thomas Ehret, Anton Van Zanten, Rainer Erhardt
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Method for braking motor vehicle wheels while reducing a yawing moment of an antilock braking system
Patent number: 5388896Abstract: In a method for braking motor vehicle wheels, to reduce a yawing moment produced by an antilock braking system, the build-up of braking pressure on at least one wheel is influenced. The braking pressure on the wheels of one axle is influenced to such an extent that the differential between the braking pressures of one axle does not exceed a maximum permissible value. This maximum permissible value is made dependent upon the vehicle speed and the transversal acceleration.Type: GrantFiled: July 15, 1993Date of Patent: February 14, 1995Assignee: Robert Bosch GmbHInventors: Uwe Hartmann, Friedrich Kost, Karl-Josef Weiss, Wolf-Dieter Ruf -
Patent number: 5211453Abstract: Brake pressure is varied briefly by means of pressure pulses at regular intervals during phases when brake pressure is otherwise maintained constant, and any variations in transverse acceleration at each axle are determined. These variations at the axles are used to modify the wheel slip by varying the brake pressure in order to increase stability while retaining an adequate steerability reserve or vice versa.Type: GrantFiled: November 26, 1990Date of Patent: May 18, 1993Assignee: Robert Bosch GMBHInventors: Anton Van Zanten, Friedrich Kost, Wolf-Dieter Ruf, Karl-Josef Weiss, Uwe Hartmann, Gerd Busch
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Patent number: 5188434Abstract: A brake-pressure controller regulates the brake pressure on the individual wheels according to the instantaneous slip values in comparison with variable desired slip values. The angle of inclination of one wheel of each axle is determined, and the desired slip values are varied as a function of these angles of inclination with the effect of a better vehicle controllability.Type: GrantFiled: June 3, 1991Date of Patent: February 23, 1993Assignee: Robert Bosch GmbHInventors: Wolf-Dieter Ruf, Uwe Hartmann, Friedrich Kost, Anton Van Zanten
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Patent number: 5136509Abstract: A brake slippage control is described where the difference .DELTA..lambda. between an acceptable brake slippage .lambda.* and the actual brake slippage is determined. The difference .DELTA..lambda. is supplied to a control amplifier and converted into actuating times for a brake pressure control unit. Magnitude and increase of the reference value required for forming the slippage values .lambda. and .lambda.* is from time to time actualized when the control is switched off.Type: GrantFiled: April 16, 1990Date of Patent: August 4, 1992Assignee: Robert Bosch GmbHInventors: Anton van Zanten, Wolf-Dieter Ruf, Friedrich Kost, Gerhard Kreisselmeier
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Patent number: 5070459Abstract: A anti-lock brake control system and/or a drive slip control system is described the slippage value of which for the brake pressure control is to be set close to the maximum of the .mu.-slippage curve, on the stable branch, that is, during the control.For this purpose, a short pressure pulse is generated in a phase where the pressure is maintained constant and the difference of the reference speed and the wheel speed is integrated (J) over a time T.sub.I and the maximum of the difference (D.sub.max) is determined in this time. The two values are divided ##EQU1## and the resulting values is used for determining the slippage.Type: GrantFiled: April 16, 1990Date of Patent: December 3, 1991Assignee: Robert Bosch GmbHInventors: Anton Van Zanten, Wolf-Dieter Ruf, Friedrich Kost, Karl-Josef Weiss
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Patent number: 3948076Abstract: Method and apparatus for automatically straightening elongated and at least partly rotationally symmetrical workpieces by applying a sequence of straightening strokes to a workpiece at each of a plurality of straightening stations to counteract a deformation until the measured instantaneous values of the deformation fall within a predetermined deformation tolerance. The depth of the straightening strokes is determined by the difference between the measured instantaneous values of the deformation and the mean of the maximum and minimum values of the deformation.Type: GrantFiled: September 17, 1974Date of Patent: April 6, 1976Assignee: Eitel KG., WerkzeugmaschinenfabrikInventors: Hans-Georg Eitel, Waldemar Morlock, Dieter Ruf
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Patent number: 3943746Abstract: Method and apparatus for automatically straightening elongated and at least partly rotationally symmetrical workpieces by applying a sequence of straightening strokes to a workpiece at one straightening station to counteract a deformation until the measured instantaneous values of the deformation fall within a predetermined deformation tolerance. The depth of the straightening strokes is determined by the difference between the measured instantaneous values of the deformation and the mean of the maximum and minimum values of the deformation.Type: GrantFiled: September 17, 1974Date of Patent: March 16, 1976Assignee: Eitel KG., WerkzeugmaschinenfabrikInventors: Hans-Georg Eitel, Waldemar Morlock, Dieter Ruf