Abstract: The invention relates to a filter element which is configured in the form of a pocket or a tube with an inner space extending in a longitudinal direction and has a multilayer structure which has a permeable outer layer, a permeable inner layer and at least one intermediate layer arranged between the outer layer and the inner layer, which is configured as a fine-pored filter element, wherein the filter element has a predetermined axial length, and wherein the outer layer and the inner layer have the predetermined axial length.

Abstract: The invention relates to a filter for filtering a liquid or a gas, with a pocket-shaped filter element which has a sleeve-shaped circumferential region, a closed head region and an open foot region, and with a frame element which has an annular base, in which the foot region of the filter element is accommodated, and at least one supporting strut which extends away from the base along the circumferential region of the filter element. An advantageous design of the filter is achieved by forming the head region of the filter element with a saddle shape, wherein two lateral tips are provided between which a channel-shaped recess is formed.

Abstract: The invention relates to a filter for filtering a liquid or a gas, with a pocket-shaped filter element which has a sleeve-shaped circumferential region, a closed head region and an open foot region, and with a frame element which has an annular base, in which the foot region of the filter element is accommodated, and at least one supporting strut which extends away from the base along the circumferential region of the filter element. An advantageous design of the filter is achieved by forming the head region of the filter element with a saddle shape, wherein two lateral tips are provided between which a channel-shaped recess is formed.

Abstract: The invention relates to a connection system, which enables several stackable containers 1, 2) to be interconnected for storage and transport purposes. Said system is equipped with connection elements (4), which automatically engage with one another, when the containers (1, 2) are stacked on top of one another. The connection elements (4), retaining ribs (16) and force absorption ribs (21) on the containers (1, 2) are configured in such a way that lifting forces are directly transmitted from a second container (2) to a first container (1) by means of a locking element (15) on the connection elements.

Abstract: A multi-twisting spindle has a hollow spindle axle defining the axial direction of the twisting spindle. A bobbin support including a support bottom and a protective pot is rotatably connected to the hollow spindle axle. A rotor disk is fixedly connected to the hollow spindle axle. A balloon limiter is connected to and rotates with the rotor disk. The protective pot is positioned radially inwardly in the balloon limiter. A gap is formed between the balloon limiter and the protective pot. The protective pot is driven in a rotational direction opposite to the rotational direction of the balloon limiter. The rotor disk has a yarn guide channel connected to the hollow spindle axle and extending radially outwardly away from the hollow spindle axle. A deflection channel is connected to the yarn guide channel and has an outlet that opens into the gap. A yarn catch ring is arranged axially spaced below the support bottom in a radially outer area of the support bottom.

Abstract: A method of building a yarn reserve at a balloon limiter for a yarn guided after emerging from a spindle rotor into a yarn guide channel includes the step of connecting a yarn guide eyelet to an upper end of a balloon limiter so as to be positioned at an angular distance relative to an exit location of the yarn at the spindle rotor. The angular distance is adjusted between 20.degree. and 120.degree. as a function of operating conditions. The yarn is guided for building a yarn reserve through the yarn guide eyelet. The multiple twisting spindle for performing the inventive method has a spindle rotor having an exit location for a yarn and a rotating balloon limiter surrounding the spindle rotor and having at an upper end thereof at least one yarn guide eyelet. The yarn guide eyelet is spaced at an angular distance relative to the exit location of the yarn at the spindle rotor.