Abstract: A pump or method supplying patient controlled analgesia to a patient. The infusion flow rate of the analgesic is increased in response to a command given by the patient receiving the analgesic, and a lock out interval is provided during which time the actuation of the pump by the patient produces no further incremental increase in the flow rate of the analgesic.

Abstract: A device for separating flat objects includes an endless conveyer belt on which the flat objects are supplied standing on edge and forming a stack. A conveying device including a rotating conveying element picks up the objects individually on the flat side from a front of the stack by a run of the rotating conveying element which removes the flat objects crosswise relative to the stack. The conveying device includes a guide arrangement for displacing the conveying device through a stroke approximately parallel to a direction in which the stack is formed while bearing on the front end of the stack.

Abstract: Statistical propylene copolymer containing 0.2-0.9% by weight monomeric units derived from ethylene; 13-21% by weight monomeric units derived from .alpha.-olefin having 4-10 carbon atoms, and 78.1-86.8% by weight monomeric units derived from propylene. The copolymer has a melting point of 115-125.degree. C.; a proportion of polymer soluble in boiling heptane greater than or equal to 95% by weight, and a proportion of polymer soluble in cold xylene (25.degree. C.) greater than 40% by weight.

Abstract: A tiltable bowl of a carriage of a sorting line is secured on two supports which are arranged axisymmetrically with respect to one another. The supports are pivotably seated on an axle. On each support, a resilient yoke is formed on one side with its first end. The oppositely disposed second end of the yoke can be displaced within defined limits relative to the supports. Each yoke has a latch cam which, in the horizontal, initial position of the bowl, locks into place behind a projection fixedly connected to the frame and thus locks the bowl in this initial position. When a pusher rod articulated at the second end is pushed upward, the lock is released first and then the bowl is tilted.