Abstract: The present invention relates to a support structure for a rucksack, including a support framework having a first and a second bearing point arranged at a spacing from one another along a first direction, and a first and a second rotation element. The first rotation element is mounted on the support framework at the first bearing point and is rotatable about a first rotation axis and the second rotation element is mounted on the support framework at the second bearing point and is rotatable about a further rotation axis. The first and second rotation elements are constructed for receiving a shoulder belt and hip belt, respectively, in a torsion-resistant manner. The first and the second rotation element are rotationally coupled to one another in a manner reversing the direction of rotation.

Abstract: The present invention relates to a support structure for a rucksack, including a support framework having a first and a second bearing point arranged at a spacing from one another along a first direction, and a first and a second rotation element. The first rotation element is mounted on the support framework at the first bearing point and is rotatable about a first rotation axis and the second rotation element is mounted on the support framework at the second bearing point and is rotatable about a further rotation axis. The first and second rotation elements are constructed for receiving a shoulder belt and hip belt, respectively, in a torsion-resistant manner. The first and the second rotation element are rotationally coupled to one another in a manner reversing the direction of rotation.

Abstract: A nozzle type centrifuge having a bottom feed inlet to a main pumping chamber at the base of the machine for injecting the feed slurry to a rotor bowl having separator discs for effecting a two-fraction separation comprising an overflow at the top and an underflow at the peripheral mid portion of the bowl with a portion of the underflow delivered to a return pumping chamber beneath the main pumping chamber and seal means between said chambers to prevent dilution of the underflow fraction.