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A carbon dioxide absorber for a rebreathing system can be connected to a connection head of the rebreathing system in a simple manner. A centering device (43, 44, 45, 46), provided in the area of a guide plate (40) of the absorber (4), can be caused to mesh with centering pins pointing in the direct

A carbon dioxide absorber for a rebreathing system can be connected to a connection head of the rebreathing system in a simple manner. A centering device (43, 44, 45, 46), provided in the area of a guide plate (40) of the absorber (4), can be caused to mesh with centering pins pointing in the direction of the absorber from the connection head.

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1. A carbon dioxide absorber for a rebreathing system, the carbon dioxide absorber comprising: a connection head at the rebreathing system, said connection head including a pivotable mount;an absorber housing;a guide plate on a front side of said absorber housing, said guide plate being pushed into

1. A carbon dioxide absorber for a rebreathing system, the carbon dioxide absorber comprising: a connection head at the rebreathing system, said connection head including a pivotable mount;an absorber housing;a guide plate on a front side of said absorber housing, said guide plate being pushed into said pivotable mount of said connection head;guide plate gas ducts arranged concentrically at said guide plate;connection head gas ducts provided in said connection head and with a design corresponding to said guide plate gas ducts, said guide plate gas ducts for connection to said connection head gas ducts;guide grooves between said guide plate and said absorber housing for connecting said guide plate to said mount;centering pins pointing in a direction of said absorber housing from said connection head; andcentering means in one or more of said guide plate and said absorber housing, said centering means for meshing with said centering pins from said connection head;said pivotable mount being pivotable between a first position and a second position, said first position arranging said pivotable mount adjacent said connection head, said second position arranging said pivotable mount spaced from said connection head and said centering pins. 2. A carbon dioxide absorber in accordance with claim 1, wherein said centering means comprises upper positioning grooves arranged opposite each other with corresponding said centering pins in an area of said guide grooves. 3. A carbon dioxide absorber in accordance with claim 2, wherein said centering means further comprises lower positioning grooves at said absorber housing, said lower positioning grooves extending flush with said upper positioning grooves and for meshing with free ends of said centering pins. 4. A carbon dioxide absorber in accordance with claim 1, wherein said centering pins taper towards a free end thereof in a wedge-shaped pattern. 5. A carbon dioxide absorber in accordance with claim 4, wherein: said centering means comprises upper positioning grooves arranged opposite each other with corresponding said centering pins in an area of said guide grooves; andan outer contour of said centering pins corresponds to an inner contour of said upper positioning grooves. 6. A carbon dioxide absorber in accordance with claim 4, wherein: said centering means comprises lower positioning grooves at said absorber housing, said lower positioning grooves for meshing with free ends of said centering pins; andan outer contour of said centering pins corresponds to an inner contour of said lower positioning grooves. 7. A carbon dioxide absorber in accordance with claim 1, wherein: said pivotable mount defines an opening;said centering means defines positioning grooves as part of said centering means, said centering pins passing through said opening of said pivotable mount, and into said positioning grooves of said centering means when said pivotable mount moves from said first position into said second position. 8. A rebreathing system with carbon dioxide absorber comprising: a rebreathing system connection head including a pivotable mount, said connection head having connection head gas ducts provided in said connection head, said connection head having centering pins pointing outwardly from said connection head;an absorber housing with a guide plate on a front side of said absorber housing, said guide plate for being pushed into said pivotable mount of said connection head, said guide plate including guide plate gas ducts arranged concentrically at said guide plate with a design corresponding to said connection head gas ducts, said connection head gas ducts for connection to said guide plate gas ducts, guide grooves being provided between said guide plate and said absorber housing for connecting said guide plate to said mount; andcentering means in one or more of said guide plate and said absorber housing, said centering means for meshing with said centering pins from said connection head, said centering means defining upper positioning grooves arranged opposite each other with corresponding said centering pins in an area of said guide grooves, said centering means further defining lower positioning grooves at said absorber housing, said lower positioning grooves extending flush with said upper positioning grooves and for meshing with free ends of said centering pins. 9. A rebreathing system with carbon dioxide absorber in accordance with claim 8, wherein said centering pins taper towards a free end thereof in a wedge-shaped pattern. 10. A rebreathing system with carbon dioxide absorber in accordance with claim 9, wherein: an outer contour of said centering pins corresponds to an inner contour of said upper positioning grooves. 11. A rebreathing system with carbon dioxide absorber in accordance with claim 9, wherein: an outer contour of said centering pins corresponds to an inner contour of said lower positioning grooves. 12. A carbon dioxide absorber arrangement in a rebreathing system, the absorber arrangement comprising: an absorber housing for holding a carbon dioxide absorber material, said absorber housing defining ducts for bringing breathing gas in contact with the carbon dioxide absorber material;a guide plate mounted on one side of said absorber housing, one of said guide plate and said absorber housing defining a positioning groove;a pivotable mount adapted to connect to said guide plate, said pivotable mount and said guide plate being shaped to have said guide plate slide into said pivotable mount in a direction along said one side of said absorber housing;a connection head adapted to connect to the rebreathing system and defining connection head ducts in communication with the rebreathing system, said pivotable mount being pivotally connected to said connection head to bring said ducts of said absorber housing into communication with said ducts of said connection head;a centering pin extending from said connection head in a direction of said absorber housing, said centering pin cooperating with said positioning groove to align said ducts of said absorber housing with said ducts of said connection head;said pivotable mount being pivotable between a first position and a second position, said first position arranging said ducts of said absorber housing in communication with said ducts of said connection head, said second position arranging said pivotable mount spaced from said connection head and said centering pin. 13. An absorber arrangement in accordance with claim 12, wherein: said pivotable mount defines an opening, said centering pin passing through said opening, and into said positioning groove when said pivotable mount moves from said first position into said second position. 14. A carbon dioxide absorber cartridge for a rebreathing system, the carbon dioxide absorber cartridge comprising: an absorber housing, the absorber housing being configured to connect with a pivotable mount of a connection head of a rebreathing system;a guide plate provided as a front side of the absorber housing, the guide plate being configured for insertion into the pivotable mount of the connection head;guide plate gas ducts arranged concentrically at the guide plate, and configured to correspond to and connect with gas ducts in the connection head;guide grooves defined by at least one of the guide plate and a portion of the absorber housing for connecting the guide plate to the mount, the guide grooves arranged opposite each other on lateral sides of the guide plate and substantially parallel to a direction of insertion into the connection head;upper positioning grooves arranged opposite each other on lateral sides of the guide plate and in an area of the guide grooves, and substantially along a line perpendicular to the direction of insertion and bisecting the concentrically arranged gas ducts, the upper positioning grooves being configured to mesh with centering pins extending from the connection head which point in a direction of the absorber housing when the absorber is inserted into the pivotable mount and the mount is pivoted from a second position arranging the pivotable mount spaced from the connection head and the centering pins to a first position arranging the pivotable mount adjacent the connection head. 15. A carbon dioxide absorber cartridge for a rebreathing system in accordance with claim 14, wherein the upper positioning grooves are arranged opposite each other for meshing with free ends of the centering pins. 16. A carbon dioxide absorber cartridge for a rebreathing system in accordance with claim 15, further comprising lower positioning grooves at the absorber housing, the lower positioning grooves extending in alignment with the upper positioning grooves and for at least one of meshing with free ends of the centering pins and providing clearance for free ends of the centering pins. 17. A carbon dioxide absorber cartridge for a rebreathing system in accordance with claim 14, wherein: side walls of the positioning grooves slant inwards towards each other in a direction from top to bottom such that the side walls are configured to guide and engage with the centering pins that have a taper in a wedge shaped pattern. 18. A carbon dioxide absorber cartridge for a rebreathing system in accordance with claim 14, wherein the guide grooves are substantially identical with each other. 19. An absorber for a rebreathing system, the absorber comprising: an absorber housing first side;a plurality of gas ducts arranged in said first side, one gas duct of said plurality of gas ducts being arranged concentrically around a gas duct axis, another of said plurality of gas ducts being arranged adjacent said one gas duct;an absorber housing second side extending away from said first side in a direction of said gas duct axis;first and second guide grooves arranged in said second side, each of said first and second guide grooves having a longitudinal axis, said longitudinal axes being arranged parallel to each other and extending in an insertion direction, said first and second guide grooves being arranged on diametrically opposite sides of said plurality of gas ducts, said first and second guide grooves being adapted to insert the absorber into a mount of the rebreathing system in said insertion direction, said first and second guide grooves being adapted to fix said absorber with respect to the mount of the rebreathing system in directions perpendicular to said insertion direction;first and second positioning openings arranged in said first side on diametrically opposite sides of said plurality of gas ducts, each of the first and second positioning openings being delimited by stop surfaces on diametrically opposite sides of each of said first and second openings with respect to said insertion direction, said stop surfaces being adapted to fix the absorber both forward and backward in said insertion direction with respect to a connection head of the rebreathing system, wherein said first and second guide grooves, and said first and second positioning openings are arranged to align said plurality of gas ducts of the absorber with gas ducts of the connection head. 20. An absorber in accordance with claim 19, wherein: the absorber has a positioning axis perpendicular to said gas duct axis and said insertion direction, said stop surfaces of said positioning openings being arranged symmetrical with respect to said positioning axis whereby correct alignment of said stop surfaces and said gas ducts of the absorber is easily provided without having to determine offsets. 21. An absorber in accordance with claim 20, wherein: said first and second positioning openings are arranged at an intersection of said first and second sides and are open on said second side whereby less material is needed to form the position openings and the positioning openings are easier to form. 22. An absorber in accordance with claim 20, wherein: said first and second openings are each adapted to receive a pin of the connection head. 23. An absorber in accordance with claim 20, wherein: said plurality of gas ducts are arranged concentrically around said gas duct axis;said stop surfaces have a taper whereby said stop surfaces contact a pin of the connection head to guide the gas ducts of the absorber into proper alignment with the gas ducts of the connection head;each of said guide grooves is defined by an upper wall and a lower wall;each of said first and second positioning openings extend though said upper wall and the lower wall of one of said first and second guide grooves;said first and second side define a centering notch at a forward or rear edge of the absorber in said insertion direction, whereby said centering notch is adapted to cooperate with a centering pin of a different connection head and limit movement of the absorber in said insertion direction and allow the absorber to be used with two different types of connection heads.