Abstract: A cutter head (10) for a hair cutting machine, having an upper blade (14) and a lower blade (12) that is adjustable relative to the upper blade using an actuating element (100), having a support (32) with an adjusting element (16) which is adjustable relative to the support using the actuating element (100) and which carries out a relative movement between the upper blade and the lower blade in the direction of cutting. The actuating element can be selectively placed in one of two opposite side areas of the support for actuating the adjusting element connected to the lower blade (12). The actuating element (100) is removably connected to a shaft (62), mounted in the support (32), having a first element. The adjusting element is a second element having, in the cross-section, a U- and/or C-shape, the transverse or base limb being connected to the lower blade (12).

Abstract: The invention relates to a cutter head (10) for a hair cutting machine, having an upper blade and a lower blade (12) that can be adjusted with respect to the upper blade by means of an actuating element, comprising a support with an adjusting element which can be adjusted with regard to the support by means of the actuating element (100) and which carries out a relative movement between the upper blade and the lower blade in the direction of cutting. The actuating element can be selectively placed in one of two opposite side areas of the support for actuating the adjusting element that is connected to the lower blade (12). The actuating element (100) can be removably connected to a shaft (62) mounted in the support (32) or to a first element protruding therefrom. The adjusting element is a second element having, in the cross-section, a U and/or C-shape, the transverse or base limb being connected to the lower blade (12).

Abstract: A cannula device having a base body made of plastic, on which a cannula is held, and having a guard element that can be moved relative to the base body into a second position, in which the cannula tip is exposed for the use of the cannula device, from a first position, in which, in the delivered state of the cannula device, the cannula tip is covered to protect the user from injury. The guard element is movable, after use of the cannula device, back into a third position in which the cannula tip is covered to protect a user from injury, and the guard element is irreversibly locked to the base body by a third fixing device including a first latching protrusion protruding from the base body and at least one first latching receptacle, associated with the first latching protrusion in at least one side wall of the guard element.

Abstract: A cannula device having a base body made of plastic, on which a cannula is held, and having a guard element that can be moved relative to the base body into a second position, in which the cannula tip is exposed for the use of the cannula device, from a first position, in which, in the delivered state of the cannula device, the cannula tip is covered to protect the user from injury. The guard element is movable, after use of the cannula device, back into a third position in which the cannula tip is covered to protect a user from injury, and the guard element is irreversibly locked to the base body by a third fixing device including a first latching protrusion protruding from the base body and at least one first latching receptacle, associated with the first latching protrusion in at least one side wall of the guard element.

Abstract: An indwelling catheter arrangement includes a cannula, the proximal end of which starts from a receiver and the distal end of which has an opening, as well as a flexible catheter, which can be guided through the receiver and through the cannula opening. A guiding element extends during the placing of the catheter, the guiding element remaining in the catheter after the placement and being fixed in a defined position in relation to the catheter. This arrangement provides a catheter which has a desired flexibility and, simultaneously, cannot slip in an uncontrolled manner after placement.

Abstract: In a process for the manufacture of catalyst moldings a natural raw material containing Fe.sub.2 O.sub.3, Cr.sub.2 O.sub.3 or another such catalyst component such as TiO.sub.2, NbO.sub.2, WO.sub.3, V.sub.2 O.sub.5 or MoO.sub.3 is screened to a grain size equal to or less than approximately 0.25 mm. This screened base mixture is thoroughly blended, and then preferably a concentrated sulphuric acid is added. This mixture of material is then pressed into a molding in a hydraulic press with a pressure of approximately 500 bar to produce the molding.