Abstract: The invention relates to a fluid filter, especially an oil filter for an internal combustion engine, comprising a filter housing and a central, approximately tubular component which extends into the interior of the filter, said central component engaging in the operating position a projection located on the filter housing and permanently retained in the filter housing, said component being disengageable from said projection and nondestructively removable in said disassembly position from the filter, the component being rotatably mounted around its longitudinal axis within the filter housing, a retaining component (10) being arranged in rotatably restricted fashion within the filter housing, which retaining component in its operating position surrounds and fixes the central component by means of a clamping or locking interference fit, and the central component being rotatable in its disassembly position when the clamping or locking force is exceeded.

Abstract: The invention relates to a fluid filter, especially an oil filter for an internal combustion engine, comprising a filter housing and a central, approximately tubular component which extends into the interior of the filter, said central component engaging in the operating position a projection located on the filter housing and permanently retained in the filter housing, said component being disengageable from said projection and nondestructively removable in said disassembly position from the filter, the component being rotatably mounted around its longitudinal axis within the filter housing, a retaining component (10) being arranged in rotatably restricted fashion within the filter housing, which retaining component in its operating position surrounds and fixes the central component by means of a clamping or locking interference fit, and the central component being rotatable in its disassembly position when the clamping or locking force is exceeded.

Abstract: With reference to a device for heating a meltable material, such as plastic, upstream from equipment for further processing, such as casting or extrusion equipment, which device includes a conveyor channel for the material and a heating means located outside the conveyor channel, the heating means being designed as a radiant heating means and the thermal radiation being directed onto the conveyor channel, the invention proposes that the conveyor channel consist of a material which completely or partially absorbs the thermal radiation.

Abstract: The invention relates to a fluid filter, such as an oil filter for a combustion engine. The inventive filter comprises an exchangeable filter inset which is provided with a ring-shaped cross-section that encompasses an inner chamber. The outlet for the purified fluid is joined to the inner chamber. The inventive filter also comprises a discharge line for emptying the filter during a filter change. A central discharge dome is provided which extends into the inner chamber. Said dome, together with the filter inset is mounted in such a way as to be axially displaced between a first closing position which closes the discharge line and a second release position which releases the discharge line. According to the invention, the discharge dome is fixed to the housing and is pushed into the release position thereof when said dome is impinged upon with a spring.

Abstract: The invention relates to an electrostatic precipitator for collecting liquid or solid particles from a gas stream. The electrostatic precipitator consists of a tube (1), through which the gas to be cleaned flows longitudinally, the internal wall (1A) of the tube forming a precipitating electrode for the particles to be collected. An internal electrode (2) extending in a lengthwise direction is disposed concentrically inside tube (1), a high electrical voltage being present in the space between this internal electrode and the precipitating electrode. On the inlet side, internal electrode (2) has a first section (2A) with a small cross-sectional area, and on the outlet side, a second section (2B) with a comparatively larger cross-sectional area. The function of the first section is essentially to form a corona while that of the second section is essentially to form an electrostatic collecting field.

Abstract: The invention relates to an electrodeposition device, having two or more emission electrodes that can be connected to a common electrical supply line and an electrically insulating electrode holder, wherein the electrode holder is made of plastic and receives the electrodes, the electrical connections thereof and a contact surface for the connection to the electrical supply line.

Abstract: The invention relates to an electric contact array having two contacts between which an electrically conductive connection exists, wherein the contact array is watertight and dust-tight, wherein the contacts are disposed in a sealed area. According to the invention, two sealing elements are disposed at a distance from one another in order to seal the sealed area. A test area is provided between the sealing elements, said test area having a hole that enables access from the outside.

Abstract: The invention relates to a fluid filter, especially an oil filter for an internal combustion engine, comprising a filter housing and a central, approximately tubular component which extends into the interior of the filter, said central component engaging in the operating position a projection located on the filter housing and permanently retained in the filter housing, said component being disengageable from said projection and nondestructively removable in said disassembly position from the filter, the component being rotatably mounted around its longitudinal axis within the filter housing, a retaining component (10) being arranged in rotatably restricted fashion within the filter housing, which retaining component in its operating position surrounds and fixes the central component by means of a clamping or locking interference fit, and the central component being rotatable in its disassembly position when the clamping or locking force is exceeded.

Abstract: The invention relates to a fluid filter, such as an oil filter for an internal combustion engine, comprising a filter housing which can be closed by a screw lid, a filter element and a central, approximately tubular component which projects into the interior of the filter, whereby the central component has bearing surfaces which are used to fix said component into the filter, so that it cannot rotate. The central component and the filter housing have projections and corresponding undercuts which interact with the projections, in order to fix the central component using a detent or snap-fit connection.

Abstract: A device to deoil crankcase ventilation gases of an internal combustion engine with at least one oil mist separator is provided which has a gas inlet connected to a first pressure area and is directly or indirectly connected to the crankcase of the engine. The separator also has a gas outlet connected to a second pressure area and is directly or indirectly connected to the air intake section of the engine and an oil outlet connected to the oil sump of the engine. The separator further has a bypass channel, which has a gas inlet connected to the first pressure area and a gas outlet connected to the second pressure area as well as at least one device which, depending on the pressure difference between the two pressure areas, opens or closes the bypass channel continuous or gradually to allow the crankcase ventilation gases to flow through.

Abstract: A method for cleaning a two-stage emission electrode of an electrofilter suitable for use with an internal combustion engine, whereby a cleaning body moves along the emission electrode to strip it of deposits. Only the first stage of the electrode is cleaned by the cleaning body.

Abstract: A filter housing has a pot-like base, a lid that closes the base in a pressure-tight manner, one or several additional elements such as pipes, flanges or the like, which are connected to the wall of the base in the area of the seal between base and lid, and at least one rib which extends radially around the base in this area. The rib has varying dimensions around the circumference of the base and a reduced cross-section in the area in which the additional elements are connected to a wall of the base. The lid and base are directly screwed together by means of matching threads and the variable cross-section of the rib ensures a practically identical rigidity of the base against inner pressure stresses all around its circumference.

Abstract: A fluid filter for liquid media with a removable filter insert and a drain opening having a spring-loaded closure element associated therewith. The closure element is held by the filter insert in a closing position that seals the drain opening, and separates from the drain opening when the filter insert is loosened or is removable. The spring is designed as an elongated spring having a U-shaped design.

Abstract: The invention relates to a filter cartridge for a filter for filtering liquid or gaseous media comprising two disks and a substantially hollow cylindrical filter member arranged inbetween the two disks, with the medium to be filtered flowing through the filter member, with at least one of the two disks provided with a central aperture whereby the filter cartridge is axially mountable onto a medium inlet pipe or outlet pipe with at least one seal sealingly positioned inbetween, and wherein the filter cartridge is detachable from the pipe for replacement. The filter cartridge is designed as a replacement filter cartridge for replacing common filter cartridges having metal parts, wherein the filter consists of paper and/or cotton and/or felt and/or thermally usable plastic non-woven fabric, wherein the front disks are formed of thermally consumable plastic and the seal is formed of a flexible thermally consumable material.

Abstract: A filter for filtering lubricating oil or fuel for an internal combustion engine is disclosed herein. The filter includes a filter housing having an inner end for connection to a connection flange associated with the internal combustion engine and an outer end connected to a detachable cover. The inner end of the housing includes a filter inlet duct, a filter return duct, and a plurality of coaxially spaced radial filter seals for providing a seal between the filter housing and the connection flange. The connection flange includes a connection inlet duct in matching registry with the filter inlet duct, a connection return duct in matching registry with the filter return duct, and a plurality of coaxially spaced sealing surfaces each in matching registry with a respective one of the radial filter seals. A locking connection is provided for securing the filter housing against the connection flange at a plurality of said angular positions with respect to the connecting flange.

Abstract: The invention relates to a process for operating an electric filter for gaseous fluids containing impurities, especially in a crankcase ventilator for internal combustion engine, in which the electric filter is fitted in the ventilation aperture as an oil separator and the high-voltage generator and hence the power supplied thereby can be controlled or regulated depending on the residual impurity content attained or to be attained.

Abstract: In a fluid filter with a housing and a filter element replaceably located in said housing, and with a filter by pads valve having a valve body held in the housing that is movable against the action of a spring from the closed position in which it cooperates with a sealing surface, into an open position in which it permits a fluid flow to bypass the filter element. The invention proposes that the sealing surface associated with the valve body be formed by the replaceable filter element.

Abstract: A liquid filter, such as an oil or gas filter, is provided which has a cup-shaped cylindrical filter housing to be mounted in a vertical orientation, with a releasable cover closing the filter housing. A liquid inlet passage and a liquid outlet passage are provided at the housing. A replaceable, substantially hollow cylindrical filter insert is vertically arranged in the housing. The filter insert being formed of a filter material member arranged between an upper and a lower disc. A collar, which is impervious to solid contaminants removed by the filter material member, extends from the lower disc upwardly along a part of the height of the filter insert, surrounding an outer circumference of the filter insert member. In this manner a collection chamber is formed for the filtered solid particles at the lower disc.

Abstract: The invention relates to a filter cartridge for a filter for filtering liquid or gaseous media comprising two front disks and a substantially hollow cylindrical filter member arranged inbetween the two front disks, with the medium to be filtered flowing through the filter member, with at least one of the front disks provided with a central aperture whereby the filter cartridge is axially mountable onto a medium inlet pipe or outlet pipe with at least one seal sealingly positioned inbetween, and wherein the filter cartridge is detachable from the pipe for replacement. The filter cartridge is designed as a replacement filter cartridge for replacing common filter cartridges having metal parts, wherein the filter consists of paper and/or cotton and/or felt and/or thermally usable plastic non-woven fabric, wherein the front disks and formed of thermally consumable plastic and the seal is formed of a flexible thermally consumable material.

Abstract: In a fluid filter with a housing and a filter element replaceably located in said housing, and with a filter by pads valve having a valve body held in the housing that is movable against the action of a spring from the closed position in which it cooperates with a sealing surface, into an open position in which it permits a fluid flow to bypass the filter element. The invention proposes that the sealing surface associated with the valve body be formed by the replaceable filter element.