Abstract: A system and method for automatic electronic payment based on the detection of a mobile station adapted to operate in a cellular telecommunications network. The system and method transmit, on the part of a transmitter associated with a Near Field Focused (NFF) base station, which is external to the cellular telecommunications network, a signal that indicates the presence of the NFF base station by mimicking the signal of an antenna of the cellular network. A request for connection to the NFF base station that originates from the mobile station is detected. An identity request signal to the mobile station is transmitted. The system and method detect an identity reply signal sent by the mobile station. Identification data of a subscriber is determined. The subscriber is billed on the basis of the determined subscriber identification data.

Abstract: A system and method for automatic electronic payment based on the detection of a mobile station adapted to operate in a cellular telecommunications network. The system and method transmit, on the part of a transmitter associated with a Near Field Focused (NFF) base station, which is external to the cellular telecommunications network, a signal that indicates the presence of the NFF base station by mimicking the signal of an antenna of the cellular network. A request for connection to the NFF base station that originates from the mobile station is detected. An identity request signal to the mobile station is transmitted. The system and method detect an identity reply signal sent by the mobile station. Identification data of a subscriber is determined. The subscriber is billed on the basis of the determined subscriber identification data.

Abstract: A foundation for masts, posts, pillars, etc., wherein the foundation has a foundation tube (3) which is lowered into a pre-drilled hole (2) in the ground (1), where the pre-drilled hole has a diameter larger than the diameter of the tube (3) and where at least the space between tube (3) and ground (1) is filled with a casting mixture (8), e.g. concrete, a tube (3) is used which is designed with perforations (4) in its lower area. The foundation tube (3) is equipped with a coating which gives the tube protection against corrosion, and possibly also an electrical insulation. The coatings can have a rough surface in order to create the best possible adhesion to the casting mixture. In order to ensure that the coated foundation tube (3) is safely lowered into the hole, it is first lined with a casing (13), which is removed during or immediately after the casting.

Abstract: A heat shield which is attached to a heatable roller in a stretching machine for the treatment of felt and wire cloths is designed to have channels for the heating medium extending in the machine direction. The ducts may be grouped in sections having a connection to an inlet and outlet manifold. Each section is attached to a by-pass. In this way a heating medium can be fed into the shield in controlled portions over the longitudinal direction of the shield thus obtaining the possibility of control and regulation of the temperature profile over the cross-section of the band.

Abstract: To obtain an enhanced evening out of differences in temperature on a roller surface, it is proposed to establish or to make a roller such that a buffer layer of oil is formed against the inside of the roller surface. This buffer layer is heated by means of a heat exchanger in which oil flows. The heat exchanger is made having open flow connection with the buffer layer.

Abstract: A stretching machine for treating removable belts supported on rollers, such as felts and wires in papermaking machines, comprises two rollers, over which the belt is trained in a loop. A heated belt contact structure has a contact surface adapted to contact the belt on the outside of the loop and between the rollers. A press roller is adapted to make press contact with the belt on the inside of the loop opposite the belt contact structure. The belt contact structure comprises a glide contact surface and a roller, the press roller acting against this latter roller.

Abstract: In an assembly for heat treatment of an endless web, comprising two rotatable rollers of which at least one roller is heatable, there is provided between the two rotatable rollers a heatable glide surface, stationary relative to the direction of movement for the web, designed to make contact with the outside of the endless web that circulates in the web loop. In this manner the web may be heat treated simultaneously on both sides. The glide surface enables the heat treatment of both sides of the web without using rollers requiring excessive space, thus also permitting the heat treatment of very short endless webs, which previously have had to be reversed and driven twice through the assembly to achieve heat treatment on both sides.

Abstract: A filter sector for a filter disk of a rotating filter, including folded or currugated means having ridges and valleys extending in a longitudinal direction of said means to form filtrate channels, and a filtering medium covering said means. Said means includes at least two elements (9, 10), each having parallel riges (12, 11') and valleys (11, 12') and said at least two elements are located in an at least partly overlapping relationship, such that filtrate channels (13) of one element (9) intersect with filtrate channels (14) of the other element (10). Preferably, the filter sector includes two at least substantially equally shaped elements and said elements are disposed such that there is communication between filtrate channels (13, 14) of said elements (9, 10) in zones of said partly overlapping relationship.

Abstract: A spray tube nozzle adapted to be cleaned during its operation. The nozzle includes a nozzle head having an inlet connectable to a conduit and an outlet for spraying liquid. Within the nozzle head is located a rotatable element defining a through-hole. The through-hole is shaped in such a way that the opening at one end is of relatively small cross-section and at the opposite end of a relatively large cross-section. The rotatable element is sealingly arranged in the nozzle head and has an external groove. The rotatable element can be positioned in at least a first rotational position to facilitate flow of spraying liquid from the conduit, to the nozzle inlet, and through the through-hole in the rotatable element, to the nozzle outlet for forming spray jets at the outlet. A second rotational position allows liquid to be flushed through the conduit by flow of the spraying liquid from the inlet, through the groove, and exiting the nozzle through a flush hole.

Abstract: The invention relates to a pump unit comprising a liquid filled electric motor with a house and with a vertical driving shaft extending downwards, a pump comprising a pump house, and a pump portion which is connected with a driving shaft, and a chamber around said driving shaft, between the motor and the pump with a mechanical packing between motor and chamber. The pump unit is characterized by the fact that the motor house and the pump house are combined to a press shell which is closed to the ouside. The chamber has a pressure equalizing connection with a first place in the pump. The liquid filled motor house has a pressure equalizing connection with a second place in the said pump where the pressure is higher than at said first place.

Abstract: The invention relates to a vertical submersible pump assembly, comprising a pump assembly casing which contains a hydraulic drive motor with a drive shaft. On the pump assembly casing a pump house is secured, and a pump rotor which is connected with the pump shaft and provided in the pump house, a transport conduit from the pump house, which transport conduit extends above the pump medium, and two drive medium conduits from the above said pump medium and down to the pump assembly casing. The vertical submersible pump assembly is characterized by the fact that the pump house is divided radially outside the pump rotor, the external ring shaped pump house portion being connected with the transport conduit. Each drive medium conduit comprises a releasable conduit means which when removed permits a unit compressing pump assembly casing with the drive motor, the pump rotor and the inner pump house portion to be pulled up.

Abstract: The invention relates to a vertical submersible pump assembly comprising a centrifugal pump assembly which comprises a centrifugal pump with a rotor and a pump casing, and a drive motor connected with the pump rotor by a drive shaft. A drain chamber surrounds the drive shaft and is sealed off in the direction of the pump rotor and the drive motor by the aid of respective shaft seals. The invention is characterized by the fact that the centrifugal pump has a dual inlet, that the pump casing forms the bottom of the drain chamber and contains the seals against the pump rotor, and that the drain chamber is shaped with a pocket extending down into the upper casing inlet.

Abstract: For bleaching cellulose pulp or a fraction thereof, e.g. reject pulp, the cellulose pulp or fraction, having a concentration of 0.5-10%, preferably 3-6%, is introduced into a screw press comprising at least a first (47) and a second (48) dewatering zone, is dewatered in the first zone to a concentration of 20-40%, whereupon a liquor of bleach chemicals is introduced centrally into the pulp which, during continued treatment, is dewatered in the second zone to a discharge pulp concentration of 15-50, preferably 15-30%, the liquid pressed out of the second zone, together with fresh bleach chemicals, being returned to the pulp in the screw press as liquor of bleach chemicals.

Abstract: A screw press, and more particularly a pressurized screw press with a driving end, is pivotally mounted at its driving end and rests in a cradle at the other end. A pivotal bearing provided at the driving end of the screw press has a clearance for vertical movement in a fixed axis of rotation. By the aid of this mounting breakage of the screw press casing is avoided when operating conditions comprise varying pressures and temperatures.

Abstract: A method and a device for simulating a larger width of felt/wire than the real one in a hot air plant for heat treatment of the felt/wire avoids a temperature drop towards the edges and of achieving a homogeneous temperature treatment all over the width of the felt/wire. Along the edges of the felt/wire adjustable sheetlike members or roller blinds are provided in the heating zone.

Abstract: An adjustable roller bearing for lateral guidance of travelling webs, e.g. a paper wire, comprises a bearing casing that is slidably mounted in a bearing foundation by the aid of members projecting diametrically from the bearing casing and bearing foundation and being in engagement with each other as well as encased by in hydraulic or pneumatic bellows which act to displace the bearing casing. The projecting members are provided with cooperating guide grooves and rollers respectively. The guide grooves are diametrically outside the contact faces of their associated roller, and have faces which in cross section follow a circular curve having the roller center as its center. Between each of these faces and the adjacent roller contact face there is a lining one end of which is adapted to the circular shape, whereas the other side, facing the roller contact face, is planar and forms a contact face for the corresponding roller.

Abstract: Apparatus for thickening, or de-watering, and refining fibre-pulpsuspensions include a screw-press thickener (1) and a refiner (2). In order to prevent air from entering the pulp and to provide a simpler arrangement, the outfeed end of the screw-press thickener (1) is connected directly to the infeed end of the refiner (2), therewith also to serve as an infeed screw to the refiner (2). In this respect the thickener (1) has a screening jacket (5) which embraces the screw (6). The screening jacket has at least one section which converges in the pulp feed direction, to achieve in the screw-press (1) a press effect required for de-watering the pulp while at the same time achieving the requisite reduction in diameter of the screening jacket (5) for connection to the refiner (2).

Abstract: An assembly for treatment of an endless wire or felt which passes around a support roll comprises a transversely elongated support frame, rails, means at each end of the frame for movable support of the frame on the rails into and out of a surrounding position in relation to the support roll, and a roll which is transversely disposed within the frame, as well as means for holding the roll in the frame in such a position within the frame that at a first surrounding position of the frame in relation to the support roll the frame roll obtains contact with the felt on the support roll and at a second surrounding position of the frame in relation to the support roll the frame roll obtains contact with a free section of the felt adjacent the support roll. The roll on the frame can be heated and has a drive motor for rotary movement of the roll about its longitudinal axis.

Abstract: An assembly for heat treatment of a papermaking wire or felt comprises mutually opposing heating surfaces that are alternately offset in the direction of web travel and can be moved toward the felt/wire, thereby enabling one to obtain an ironing effect on both sides of the web simultaneously. The heating surfaces may constitute parts of respective box members whose interiors are formed for being heated by a heat medium, for example, hot oil.

Abstract: A roller having channels in the roller shell for a flow medium. The roller has an inner, tight, homogeneous shell, an outer shell, and intermediate ribs projecting out from the inner shell and sealed to both inner and outer shells to form the said channels.