Abstract: A medical in-line flow control clamp device which is arranged coaxially along the longitudinal axis of an infusion tube or the like, and which has a sleeve connected to the tube and a slide having an arm movably mounted on and having a part biased toward the sleeve in a manner where the arm bears against and pinches the tube when the slid is moved relative to the sleeve. The sleeve may have a ramp and support directed toward the tube which causes the arm to move against the tube. The slide may be fabricated from a plastic material, such as acrylic, which causes the arm to bind against the tube. The sleeve may have one or more stops and latch means to receive and secure the arm in tube pinching relation. The sleeve and slide may have a track and projection parts which train the slide in a predetermined direction toward the tube as the slide is moved to pinching position on the sleeve.

Abstract: The present invention provides a needle guard comprising a base having a needle well to guide the point of a needle into the patient and, at the same time, for confining the pointed end of a needle within the walls of the needle well until the needle is inserted into a patient. The base is connected by at least a connector to a handle. The connector is constructed to allow the needle to be pushed beyond the needle well thereby exposing the needle. The connector also limits the extent to which the needle can be retracted. This prevents the needle from being pulled past the needle well as the needle is extracted from the patient. As a consequence of the construction, the point of the needle is substantially maintained within the needle well, except when the needle is inserted into the patient.

Abstract: A solar energy collector and utilization system of the type having a movably mounted collector for reflectively concentrating solar radiation into a focal point that impinges on an energy absorber device is provided with a solar tracking subsystem which includes heat sensor devices that detect movement of the radiation focal point away from the absorber as a result of the diurnal cycle of the sun and upon sensing such movement will enable controlled movements of the collector to be made so that the radiation focal point will be moved back onto the absorber.