Patent application number | Description | Published |
20100187456 | Adjustment Device for an Open-Close Valve - An adjustment device for an open-close valve ( | 07-29-2010 |
20100282990 | Actuating Device for an On/off Valve - An actuating device for an on/off valve having a pneumatic drive that is connected to a compressed air supply by a solenoid valve, wherein when driven with a control voltage, the solenoid valve ventilates the pneumatic drive with the compressed air and, when the control voltage is not present, vents the pneumatic drive. The pneumatic drive moves the on/off valve into an operating position during ventilation and moves it into a safety position during venting. To permit the performance of partial-stroke tests in the simplest way possible, a device for performing the partial-stroke test includes a controllable switch which is closed in a quiescent state, and in this case supplies the control voltage to the solenoid valve. The controllable switch is opened by a control signal that is generated to perform the partial-stroke test. The control signal is supplied to the controllable switch by a position switch that is closed in the operating position of the on/off valve and is opened when the on/off valve reaches a predefined position in the direction of the safety position. | 11-11-2010 |
20100315069 | METHOD FOR CHECKING THE OPERATIONAL CAPABILITY OF A FINAL CONTROL DEVICE - A control device with a valve adjusted by a control element is provided. A position sensor detects an actual position of the control element and an electro-pneumatic position controller generates a pneumatic control variable as a function of the actual and desired positions. The pneumatic control variable is supplied to the control drive via a magnetic valve activated by a supply voltage supplied by an instrumentation and control device. For carrying out a test of the magnetic valve, the magnetic valve is deactivated briefly. To initiate, monitor, and evaluate the test of the magnetic valve, the supply voltage is supplied to the magnetic valve via a controllable switch. The controllable switch is opened by a magnetic valve test signal generated by the instrumentation and control device. The magnetic valve test signal is supplied to the controllable switch via a limit switch which is opened when the control element reaches a specified position. | 12-16-2010 |
20120055329 | Actuator Device Having An Open/Close Valve - An arrangement in which a valve assembly is provided between the supply air inlet and the magnetic valve that is activated by a position threshold sensor that can be activated by the actuator element and/or a pressure threshold sensor registering the actuating pressure on the magnetic valve and connects the magnetic valve directly to the supply air to increase the availability of the actuator device when the position threshold sensor detects the attaining of a specified operation position of the actuator element or the pressure threshold sensor detects the failure to attain a specified minimum pressure. | 03-08-2012 |
Patent application number | Description | Published |
20090124146 | Ship propulsion unit and ship propulsion method - The invention relates to a ship propulsion unit with drive devices in the hull and all underwater pod, which is located outside of the hull and which has a front propeller and a rear propeller as well as torque transmitting devices between the drive devices and the propellers. The torque transmitting devices contain: a torque transmitting shalt that is shared by both propellers and serves to transmit torque from the drive devices into the underwater pod; front transmission devices, which are placed in the underwater pod and which are located between the shared torque transmitting shaft or both propellers and the front propeller, and; rear transmission devices that are located between the shared torque transmitting shaft of both propellers and the rear propeller. The invention also relates to a ship propulsion method during which a front propeller and a rear propeller, which are assigned to an underwater pod located outside of the hull, are driven by drive devices in the hull via torque transmitting devices. Both propellers are driven via: a torque transmitting shaft, which is contained in the torque transmitting devices, shared by both propellers, and which serves to transmit torque from the drive devices to the underwater pod; front transmission devices, which are placed in the underwater pod and which are located between the shared torque transmitting shaft of both propellers and the front propeller, and; rear transmission devices that are located between the shared torque transmitting shaft of both propellers and the rear propeller. | 05-14-2009 |
20130216321 | OPTIMIZED CROWNING IN BEVEL GEAR WHEELS OF A BEVEL GEAR TRANSMISSION - The invention relates to a method for producing a bevel gear wheel, in particular for rudder propellers, the teeth of which have a macro geometry specific to the gear wheels, the teeth of which can be described by flank and profile lines, the flanks of which have a tooth flank micro topography and the bearing surface of which represents the contact region of the inter-meshing teeth. The crown of a tooth flank corresponds to the elevation of the tooth flank center with respect to the tooth flank edge, wherein the course of the height and width crowns of the flank surface is substantially shaped like a circular arc. By means of precise material removal, the micro topography of the tooth flank and thus the bearing surface is optimized firstly in that the material removal is carried out such that the end relief on the tooth flank surface is reduced toward the tooth heel side and the tooth toe side, an area having a greater length and width comes into engagement on the flank and thus an enlarged bearing surface is present, and secondly in that the course of the crown the crown of a tooth flank follows an approximately logarithmic, elliptical and/or an exponential curve shape, which runs through the point of contact, when the ease-off is viewed with no load, in a longitudinal section in the flank sectional surface and/or in a profile section in the profile sectional surface. | 08-22-2013 |
20130295801 | RUDDER PROPELLER - A rudder propeller including a drive shaft and a propeller shaft that can be driven by the drive shaft by an angular drive and a planetary gear that can be located on the propeller shaft and including a sun gear that is connected to the angular drive via a coupling, a fixed ring gear and planet gears that revolve between the sun gear and ring gear and that are mounted on a planet carrier. The planet carrier can be secured against torque to the propeller shaft and the coupling between the angular drive and the sun gear can be designed as a double cardanic, rotationally-fixed flexible coupling, in such a way that radial and angular displacements of the sun gear in relation to the angular drive can be compensated. | 11-07-2013 |
20130303038 | RUDDER PROPELLER WITH AN UNDERWATER MECHANISM COMPRISING A PLANETARY GEARING - A rudder propeller with an underwater mechanism including a planetary gearing, the planetary gearing including a sun gear, a fixed internal gear and planetary gears, mounted between the sun gear and the internal gear and running on planetary axles of a planet carrier, wherein the planetary gears are mounted on the planetary axles by hydrodynamic slide bearings. | 11-14-2013 |
Patent application number | Description | Published |
20090169088 | METHOD FOR OPERATING AN X-RAY DIAGNOSTIC APPARATUS FOR DETERMINING QUALITY VALUES - A method for checking an x-ray diagnostic apparatus is provided. Fluoroscopic series of x-ray images of a technical phantom are digitally acquired and stored. Difference between a dynamic image and a background image is calculated. A measuring field is predicted. Priori information about the shape of a clinically relevant object is determined. Hough transformation on a gray value image corresponding to the difference is applied. Contrast of the object from the Hough-transformed gray value image is determined. A square of the determined contrast is calculated. A noise variance is calculated by determining a sum of a noise variance of a homogenous image region and a variance of the background image. A contrast-to-noise ratio of the determined contrast and the calculated noise variance is determined. A square of the contrast-to-noise ratio is dynamically averaged. A Clinical Relevant Fluoroscopy Performance index for the x-ray diagnostic apparatus is determined. | 07-02-2009 |
20110198508 | Method for Noise Correction for a Flat-Panel Detector - For noise correction in connection with a flat-panel x-ray detector, noise signals of a dark reference area are checked for deviations exceeding a specified threshold which, if any are present, will be taken into consideration separately for calculating the correction factor derived from the noise signal. Image artifacts due, for example, to high-contrast objects such as, for instance, cardiac pacemakers or metallic implants, in the x-ray image will be avoided through this measure. | 08-18-2011 |
20120128118 | X-RAY SYSTEM AND METHOD TO GENERATE X-RAY IMAGE DATA - An x-ray system to generate x-ray image data of a predefined volume segment of an examination subject has either an arc-shaped mount or an annular gantry, an x-ray emitter arrangement with multiple x-ray microemitters, an x-ray detector arrangement with multiple x-ray pixels arranged directly adjacent to one another, and a controller to activate the x-ray emitter arrangement and the x-ray detector arrangement. The x-ray emitter arrangement and the x-ray detector are situated opposite one another on the arc-shaped mount or the gantry. The x-ray system is designed for introduction of the examination subject between the x-ray emitter arrangement and the x-ray detector. | 05-24-2012 |