Abstract: The sealing cover (1) comprises a planar support (3), on which a number of sealing elements (4) are arranged, each of which is provided for the sealing of a sample container (2). The planar support (3) and the sealing elements (4) are produced from different materials in the same injection molding tool (21) by means of two-component injection molding. The planar support (3) is detachably connected to the sealing elements (4) by means of adhesion. The planar support (3) and the sealing elements (4) are preferably made from related plastics.

Abstract: The sealing cover (1) comprises a planar support (3), on which a number of sealing elements (4) are arranged, each of which is provided for the sealing of a sample container (2). The planar support (3) and the sealing elements (4) are produced from different materials in the same injection moulding tool (21) by means of two-component injection moulding. The planar support (3) is detachably connected to the sealing elements (4) by means of adhesion. The planar support (3) and the sealing elements (4) are preferably made from related plastics.

Abstract: A cannula is retractably mounted with a needle holder (9) in a housing (5). A switching device (7, 8) allows the hollow needle (10) to be retracted after use into the housing (5). The needle holder (9) secures against rotation the hollow needle (10) in the housing (5) in a predetermined orientation. The housing (5) is preferably provided on its outer side with markings (13) which indicate the orientation of the hollow needle (10). The hollow needle (9) cannot twist when it is retracted. Another advantage is that the orientation of the needle point need not be determined before making an injection.

Abstract: A cannula is retractably mounted with a needle holder (9) in a housing (5). A switching device (7, 8) allows the hollow needle (10) to be retracted after use into the housing (5). The needle holder (9) secures against rotation the hollow needle (10) in the housing (5) in a predetermined orientation. The housing (5) is preferably provided on its outer side with markings (13) which indicate the orientation of the hollow needle (10). The hollow needle (9) cannot twist when it is retracted. Another advantage is that the orientation of the needle point need not be determined before making an injection.

Abstract: An automatic needle retraction device includes a housing and retraction device for completely retracting a needle back into the housing after use. A selector switch device includes an equalization part, which produces a negative pressure to accept the fluid compressed during the retraction of the hollow needle. Thus, during retraction of the needle, compressed injection solution is not sprayed outward from the needle.

Abstract: The invention relates to a steam iron comprising a water tank 1 and an evaporation chamber 13, the water supply from the water tank to the evaporation chamber being effected via an electric pump 2, whose operation is dependent upon the water level in a reservoir 3 provided in the water supply between the pump and the evaporation chamber.