Abstract: A device for guiding the flow of floating objects. The device is connected to a hull of the floating object and, depending on the flow, feeds hydrodynamic forces into the hull. The device shows a main flow body which is designed in a more flat-topped manner in the area of a leading head than in the area of a trailing end. In the flow direction, a secondary body is placed behind the trailing end, which secondary body shows a rounded cross-sectional contour. The secondary body is equipped with a flow-through recess. Furthermore, the secondary body is, regarding an axis of revolution that runs at an angle to the flow direction, guided in an adjustable manner.

Abstract: A seal arrangement for controlling any large bearing clearance in the vicinity of a propeller shaft, such as for a propeller drive system for ships with two concentric propeller shafts rotating in opposite directions. The seal arrangement has a housing ring for supporting the sealing lips and a supporting ring for supporting the housing ring and defining a clearance therebetween. This clearance can be sealed and maintained by using elastic ring walls disposed between and interconnecting the housing to the supporting ring, so that compensation can be achieved for changes in the clearance during rotation of the propeller shaft.

Abstract: A stern tube bearing system for contra-rotating ship's propellers with concentric shafts is configured such that the oil feed to the bearing for the inner shaft is configured so that essentially only the oil ducts located in the lower portion of the rotational path of the bearing are in communication with the oil supply to essentially supply a substantial portion of the oil flow to the lower, load bearing surfaces of the bearing.

Abstract: This invention relates to lip seals for shafts, whose lip bodies consist of rubber elastic material, and is mounted on the reverse side on an essentially radial surface of a back-up ring which is integral with the housing. When the pressure of the medium to be sealed out increases, dangerous overloads occur on the lip edge, in spite of the roller diaphragm-like deformation of the lip body. According to the invention, these overloads are reduced by the introduction of a trough in the supporting back-up ring in the zone of the lip body near the clamp, into which the lip body is deformed and thus the pressure on the edge of the lip is reduced (FIG. 1 ).

Abstract: A ship typically is constructed with an outer hull, and an inner hull which defines the usable space of the ship. Between the outer hull, and the inner hull, the ship will generally have a low point, or bilge, for collection of any water which gets onto the ship. Therefore, one of the chambers of the ship can preferably be outfitted with processing equipment for cleaning the bilge water. The apparatus and associated method for cleaning the bilge water generally involves at least a gravity separation in a gravity separation chamber to separate at least some oil from the bilge water. Since a gravity separation is generally not sufficient to produce environmentally safe water, the ship can also be equipped with a further filtering arrangement for further processing of the bilge water.

Abstract: A ship, in particular a deep-draft vessel configured for travel on the oceans or great lakes, can have a hull with two concentrically rotating propeller shafts passing through the hull, and rotate in opposite directions to one another. The ship will generally have seals between the propeller shafts, and between the propeller shafts and the hull. In general, it is necessary to lubricate and cool the sealing surfaces of the individual seals, so that the useful life of the individual seals is prolonged, and the risk of failure of the seals is reduced. For the effective lubrication of highly-stressed seals of propeller drive systems for ships with two concentric propellers rotating in opposite directions, a forced feed lubrication system with circulating lubricating oil has been found to be advantageous.

Abstract: On a body, for example a stabilizer fin or a rudder blade on ships or the keel fin on sailboats with a keel, which is fastened to a support body, preferably a ship's hull, so that it projects outward, several ribs are fastened so that they project on the exposed end of the body. These ribs are located at some distance from one another and are parallel to the plane of symmetry of the body. The length of the ribs is approximately 1/10 to 1/20 of the length of the body, which eliminates or reduces turbulence which occurs at the end of the wing like structure.

Abstract: A seal arrangement for controlling any large bearing clearance in the vicinity of a propeller shaft, such as for a propeller drive system for ships with two concentric propeller shafts rotating in opposite directions, has a housing ring for supporting the sealing lips and a supporting ring for supporting the housing ring and defining a clearance therebetween. This clearance can be sealed, and maintained by using elastic ring walls disposed between and interconnecting the housing to the supporting ring, so that compensation can be achieved for changes in the clearance during rotation of the propeller shaft.

Abstract: In handling machines, in particular punching machines, operating in discrete steps, for sheets of paper or similar objects, a warping, waving or wrinkling of the sheets occurs during the deceleration movements of the sheets ahead of the delivery station. These deformations are smoothed by the hold-down device according to the invention, which consists of a circulating perforated endless belt, to which an underpressure is applied from below. There is also synchronization between the feed movement of the sheets and the movement of the endless belt.

Abstract: The invention employs the principle of the prior art for cooling a heated body by means of so-called heat pipes, with seal devices for rotating shafts, in particular for a ship's propeller shaft. According to this principle, an externally closed chamber extending in the longitudinal direction and filled with a liquid working fluid extends on one end into the body to be cooled, and on the other end into a cold medium, whereby a constant circulation takes place, so that the work fluid is evaporated in the hot portion of the chamber, the vapor flows into the cold portion of the chamber, condenses there, and the condensate is returned to the hot portion by way of a capillary structure (FIG. 1 ).

Abstract: A sealing apparatus for rotating shafts, in particular a stern tube seal for a propeller shaft of a ship with or without shaft bushings, with aligned gaskets resting on the shaft and located in a stationary support system, preferably of an axial face seal, and with a backup seal located in the support system, which is designed as a gland seal with soft packings, and a gland which can be moved in the axial direction in a guide body connected to the support system, whereby between the guide body and the gland there is a cavity system, into which, when there is a failure of the main seal, a hydraulic or pneumatic pressure medium can be introduced, which activates the backup seal, is characterized by the fact that the cavity system consists of a number of individual piston-cylinder units uniformly distributed over a circle which is concentric with the shaft axis, corresponding to each of which there is a branch current of the hydraulic or pneumatic pressure medium.

Abstract: A seal arrangement for rotating shafts, in particular a propeller shaft of a ship which is in contact with water containing impurities, is designed to provide a filter portion substantially adjacent the outermost seal to thereby filter dirt particles out of the water and keep the dirt particles out of the vicinity of the seal. Such a filter can be made from a sintered material and can essentially be designed to fit the existing space available along the propeller shaft.

Abstract: Sealing device for rotating shafts, in particular stern tube seal for the propeller shafts of a ship, with a main seal and a backup seal, in which the main seal is designed as a rotating mechanical seal or as a lip seal, and the backup seal is designed as a gland seal, and the activation of the latter takes place by means of an expandable body, which can be pressurized with a hydraulic or pneumatic pressure medium, preferably as a function of the pressure of the medium to be sealed out.

Abstract: A hull for a water vessel which includes an elongated displacement vessel having bow and stern extremities, a major longitudinal and normally horizontal axis, a vertical and normally perpendicular axis, a length of about L along the longitudinal axis, a propeller mechanism near the stern extremity and a guide vane which is located at a distance of between about 1/4 L and 1/2 L (preferably about 1/3 L) ahead of the propeller mechanism.

Abstract: A lubrication system for a rotatable propeller shaft of a ship. The system includes a seal for sealing lubricant adjacent the shaft and at least one annular chamber defining a hose-shaped inflatable body. A ring line supplies a fluid heat transfer medium, such as air, to the at least one annular chamber. The heat transfer medium is heated by a heat source. The heat transfer medium may also act as a pressure medium to inflate the inflatable body. The heat transfer medium can be circulated so that when the propeller shaft is stationary in an extremely cold liquid medium, such as icy sea water, the inflatable body is inflated by the heat transfer medium so that the inflatable body expands to within a major portion of the at least one annular chamber while, simultaneously, heating lubricant in the remaining portion of the annular chamber. Such heating causes the lubricant viscosity to approximately equal the viscosity of the lubricant when the propeller shaft rotates and the lubricant is not heated.

Abstract: A hull for a water vessel which includes an elongated displacement vessel having bow and stern extremities, a major longitudinal and normally horizontal axis, a transverse and normally perpendicular axis, a length of about L along the longitudinal axis, a propeller mechanism near the stern extremity and a guide vane which is located at a distance of between about 1/4 L and 1/2 L (preferably about 1/3 L) ahead of the propeller mechanism.

Abstract: In a hydraulic system for roll stabilization of a vessel by motions of the rudder an arrangement for supplying a hydraulic fluid to the rudder engine comprises a constant delivery pump, a pressure accumulator, and a valve gear unit. While the valve is opened the hydraulic fluid is delivered by the pump and the accumulator, and when the valve is closed the pump fills up the accumulator to maximum working pressure. The valve gear unit comprises a proportional control valve for controlling period, direction and flow rate of the hydraulic fluid to the steering engine and a load compensation device for controlling the returning flow returning via the proportional control valve for compensating for irregular loads from the waves or the sea against the rudder.

Abstract: Ship's hull, characterized by the fact that the hull below the construction water line (C.W.L.) consists of a bulb-shaped displacement body extending approximately over the entire length of the ship, which is slim in the forebody, then becomes uniformly thicker toward the stern over approximately 2/3 of the ship's length, and then tapers toward a large central propeller (P), and on top of which there is a vessel with lines in the nature of the V-shaped frame, which makes a transition toward the stern into a tunnel, which covers the bulb-shaped body and propeller so that above the bulb, there is a sharply concave, trough-shaped form.

Abstract: A catamaran-type air cushion craft has two floats (211) arranged spaced apart parallel to one another which are connected together at the top by a connecting structure which carries built-in structures and which is sealed at the bottom by an air-tight transverse deck (216). The connecting structure includes at least two double transverse trussed girders (217) arranged spaced apart behind one another, which at least partially contain transverse hollow cavities (212) for passageways and line accomodating hollow cavities (213, 213'), with containers (214) and longitudinal passage and supply elements (215) being mounted at the front and/or rear sides of the double transverse trussed girders.

Abstract: A ship, with several decks and several areas located one behind the other in the longitudinal direction of the ship, which areas are separated by bulkheads. Each of these has several areas, each supplied by its own air delivery and discharge ducts from at least one ventilation system. At least some of the areas separated by bulkheads are designed as separate ventilation areas, each of which has its own ventilation system and whose air delivery and discharge ducts connected to this ventilation system are not laid through the adjacent bulkheads into adjacent separate ventilation regions, but are laid exclusively within its separate ventilation region.