Abstract: A machine, in particular an industrial truck, is provided with a hydraulic system that has at least one reservoir (1) for hydraulic fluid and at least one hydraulic pump (5). The hydraulic pump (5) is located inside the reservoir (1). A priority valve (8a) is connected to the hydraulic pump (5) by a flange connection. An electric drive motor (3) of the hydraulic pump (5) can also be located inside the reservoir (1).

Abstract: The invention relates to a shockproof hydraulic cylinder that has a cylinder housing (1), in which a plunger (4) that is driven via a plunger shaft (10) is arranged to move axially, and optionally a hollow-cylinder damping plunger (11). Using different embodiments, an end-position damping is carried out on one or both sides. Plunger shaft (10), plunger (4) and damping plunger (11) can be designed in a hollow-cylinder form.

Abstract: An industrial truck cab is provided having a roof made at least partly of bulletproof glass. This roof combines a high degree of safety against falling objects with good sight lines.

Abstract: The object of the invention is a driver restraint device for an industrial truck, whereby the driver restraint device has a pivoting bar. The invention teaches that the bar can be pivoted by an operator as desired between an inoperative position and a restraining position, and can be locked in the restraining position and unlocked from the restraining position. In one configuration of the invention, there is at least one control element and/or at least one indicator or display element on the bar. In an additional configuration, a parking brake of the industrial truck can be released as a function of the rotational position of the bar.

Abstract: An industrial truck has a driver's cab with two, spaced-apart guides into which the upper and lower edges of the windshield are engaged. The windshield can be removed and replaced by bending or sliding the windshield to disengage the edges of the windshield from the guides. The windshield is held in place in the guides by fastening devices, such as hold-down plates located at the sides of the windshield.

Abstract: A multi-function lever for an industrial truck has a lever that can be pivoted around at least a first axis and at least one control element located on the lever. By pivoting the lever around the first axis and by actuating the control element, it is possible to actuate at least one function each of the industrial truck. The invention teaches that the control element can be actuated by pivoting around a second axis, wherein the second axis is substantially parallel to the first axis. The control element can be actuated with the index finger of a hand gripping the hand grip. By pivoting the lever, a vertical movement of the load holding device can be controlled, and by pivoting the control element, a tilting of the load holding device can be controlled.

Abstract: An energy storing brake for a vehicle, such as an industrial truck, includes a rotating brake rotor (5) and a non-rotating braking body (3) that can be moved relative to the brake rotor (5). The braking body (3) can be pressed by an energy storing device (4), preferably realized in the form of a spring, against the brake rotor (5), and can be detached from the brake rotor (5) by a brake lifter against the force of the energy storing mechanism (4). A hydraulic cylinder (8) can be pressurized as required, by which a supplemental force in the same direction as the force of the energy storing mechanism (4) can be exerted on the braking body (3). The hydraulic cylinder (8) can be pressurized as a function of the actuation of a brake control mechanism, preferably of a brake pedal, by an operator.

Abstract: An electrical machine with a stator and a rotor rotatable about an axis of rotation and having no bearing elements rotatably mounting the rotor relative to the stator or for defining the axis of rotation of the rotor is provided with means for releasably securing the rotor in position relative to the stator. The rotor can be secured relative to the stator in the axial and radial directions. Rotation of the rotor relative to the stator can also be prevented.

Abstract: An industrial truck, in particular a fork-lift truck, has a driving axle which is fixed to the industrial truck at two mounting locations at least. A rotor of an electric propulsion motor is disposed within an axle housing (3a, 3b, 3c) of the driving axle. At least at one end, the rotor of the propulsion motor is mounted rotatably on a bearing bracket (17) fixed to the axle housing. The bearing bracket (17) is detachably fixed to the axle housing (3a, 3b, 3c) and the mounting locations (1, 13) are disposed on the axle housing (3a, 3b, 3c). In one embodiment of the invention, the bearing bracket (17) exhibits an offset form and in the axial direction the area of the bearing bracket (17) fixed to the axle housing (3a) is a greater distance from the rotor (10) than the area of the bearing bracket (17) on which the rotor (10) is mounted.

Abstract: An industrial truck having a lifting slide which is moveable up and down on a lifting framework is disclosed. The lifting framework is fixed to at least one vertical load chain by at least one chain connecting piece. The load chain is at least partly guided in a chain guide which has an opening on at least one side. With this arrangement, the load supporting chain does not damage or soil other components of the industrial truck when travelling over irregularities in the ground.

Abstract: The invention relates to a coke dry cooling chamber with vertical outer walls constructed as cooling walls and parallel vertical cooling walls positioned in the cooling chamber, with supporting walls running crosswise to them. Pursuant to the invention, the cooling walls and supporting walls taper as they descend and the different coke cooling shafts created by them correspondingly broaden as they descend. A particular embodiment of the invention provides that diaphragm pipe walls constructed as cooling walls are equipped with flat outer abrasion plates. The space between the diaphragm walls, embodied in a pipe-stay-pipe construction, and the abrasion plates is filled with a highly heat-conductive material, graphite, for example.

Abstract: This invention concerns a process for cooling the crude coke oven gas drawn from a gas collecting main at a gas temperature of below 20.degree. C. after separating a collecting main flushing liquid fed to a tar separator. To prevent deposists of naphthalene on the cooling tubes of a precooler, the invention provides that the crude coke oven gas is treated before the precooler with tar or a tar-water mixture withdrawn from the tar separator. This effects a partial evaporation of the more volatile components, and the remaining tar or tar-water mixture is again withdrawn before the precooler. A flushing liquid from the edge zone of the tar separator that has definite proportions of low-solids and lighter tar is used in particular and it is fed in parallel with the cooling crude gas in the precooler.

Abstract: The invention concerns a process for removing dust from coke cooled by a dry method after the coke has left the cooling zone of a cooling chamber, and a device for carrying out the process. A dust-free flushing gas is injected below the cooling zone, preferably parallel to the direction in which the coke moves when it has been cooled to below 200.degree. C., to draw the gas off above the discharge lock together with the stirred-up coke dust, and to recirculate the gas after the dust is removed from it. As an alternative, compressed air is blown through the coke after it has left the lock and while it is being transported through a vibrating machine. The coke is cooled in a dry cooling unit to below 200.degree. C. and preferably 130.degree. to 180.degree. C. The coke is then cooled outside the dry cooling unit by means of air at about 50.degree. to 90.degree. C. and preferably 70.degree. to 80.degree. C.

Abstract: A quenching car from coke ovens that serves to receive a carbonized batch from an oven chamber while standing still and is capable of travel alongside a battery of coke ovens to a point under a quenching tower, includes a coke receptacle which is designed as a rectangular box. The receptacle is equipped with a slanted bottom that slants down toward a coke ramp that lies on a side of the car opposite the battery of coke ovens. A front wall of the receptacle facing the coke ramp, is equipped on its lower portion along its entire length with a flap that swings outwardly and which can be pivoted by means of an operating rod and a first operating device from a position in which it holds the receptacle tightly closed into a position in which it is open by the space of a crack in the area of the low point of the slanting bottom. The dump opening of the receptacle meanwhile remains closed by a inner, grate-like flap lining.

Abstract: The invention relates to a light construction plug for coke oven doors of horizontal chamber coking ovens, consisting of box-like, heat-resistant, metallic hollow bodies which are secured on the door body and can be filled with insulating material of low specific gravity. According to the invention, it is provided that in the longitudinal direction of the chamber, between the door body (1) and the chamber filling (5), one or more detachably interconnected hollow bodies (6, 7) are arranged and that for the formation of vertical gas pressure equalizing channels (10) between the chamber walls (11) and the hollow bodies (6, 7) the lateral outer walls (8, 9) thereof have concavities directed inwardly toward the center of the chamber.

Abstract: A method of cooling and dedusting coke after leaving the coke dry cooling system comprises directing the coke at a temperature of approximately 150.degree. to 200.degree. C. into an immersion tank which has a liquid temperature of approximately 100.degree. C., thereafter conveying the coke out of the immersion tank at a selected variable speed so as to free it of fine dust. The water content of the coke after leaving the immersion tank and after an adequate evaporation time is controlled by the speed of the conveyor which is located in the immersion tank and the water content is advantageously kept below 5%, preferably from 0 to 3%. The immersion tank comprises a closed housing overlying a box-shaped tank with a continuously revolving chain conveyor located so as to extend through the tank at its upper reach for conveying the coke into the tank and which has a lower return reach which is directed outside of the tank below the tank itself.

Abstract: The invention relates to a readjustment device on coking oven batteries with linkages, disposed in a master gallery so as to be movable in the longitudinal direction of the battery, for the actuation of shutoff members on the individual ovens of the coking oven battery. The linkages, to be moved simultaneously and oppositely in the master gallery, are joined to each other at one end of the coking oven battery through a guide pulley and this guide pulley is provided with pulley segments having different radii to obtain different strokes at the linkages.

Abstract: The sealing surfaces of a coke oven door are cleaned with high-pressure fluid by a hydraulically operated high-pressure piston pump which displaces either a hot or a cool conveyed media ladened with solid particles such as a coal mass and a fluid for cleansing the sealing surfaces of the coke oven doors and door frames. The pump includes a closed pump cylinder having an inlet and outlet valve for a conveyed medium at both ends of the cylinder and a partition dividing the cylinder. Inlet and outlet valves for hydraulic fluid are located in the cylinder on each side of the partition. An inner double piston is axially movable to and fro with the cylinder and comprises two output piston portions with a piston rod connected to each portion and located between them guided on bearings in the cylinder. A delivery space is formed between the piston portions and each end of the pump cylinder and the respective delivery spaces at each end simultaneously and oppositely decrease and increase during an operation.

Abstract: A waste heat boiler system includes a vertically elongated waste heat boiler having an upper portion with a waste gas inlet and a lower portion with an exhaust line connection which in addition to its vapor generating tubes includes evaporator tube nests and a water preheater. The waste gases are received from a dry coke cooling vessel and they are delivered through a separator by a blower to the lower end of the coke cooling vessel for flow upwardly through the hot coke. The superheater is mounted over the waste heat boiler and has a connection through a controllable valve to the top of the waste heat boiler. The superheater includes its own burner and air and external gas supply are supplied to the combustion chamber for the superheater along with bypass portion of the circulated waste gases. The steam generated by the boiler is delivered from a steam cylinder or drum in the superheated tubes of the superheater.

Abstract: A method of dry cooling red-hot coke in a vessel having an antechamber with a small discharge leading to a vertically elongated cooling chamber which is of larger dimension than the discharge and with both the cooling chamber and the antechamber having fluid cooling tubes in one or more walls and the ceiling thereof and also having cooling tube bank diverging downwardly from the discharge of the antechamber into the cooling chamber, comprises directing the red-hot coke to be cooled downwardly through the antechamber and into the cooling chamber so as to maintain a charge of coke in the cooling chamber to the conical charge cone of the cooling tubes adjacent the top of the cooling chamber which extends downwardly below the discharge, thereafter circulating a coolant through the cooling tubes to effect transfer of sensible heat from the coke to the fluid and directing a cooling gas from the bottom of the cooling upwardly through the coke and above the entire area of the coke charging cone and then into an exhau