Abstract: Techniques for controlling a process to prevent injury are presented. The techniques include obtaining a location estimation of a mobile transmitter affixed to an object, where the location estimation is relative to a location of a fixed receiver, and where the obtaining the location estimation includes sending an ultra wideband communication from the mobile transmitter to the fixed receiver and acquiring the ultra wideband communication by a phased antenna array of the fixed receiver; assessing, based on the location estimation, that the mobile transmitter is within an impermissible location; determining that the location estimation is sufficiently accurate based on a distance between the location estimation and the fixed receiver; and interrupting the process upon both assessing that the mobile transmitter is within an impermissible location and determining that the location estimation is sufficiently accurate.

Abstract: Optical scanning apparatus is disclosed wherein a plurality of reading heads are mounted on a rotating support, and a light source directs light through an optical beam switching means which rotates about an axis colinear with that of the support but at half the rotational speed, whereby the reading heads are caused to be successively operational in turn over a given segment of each revolution of the support, which has a linear transnational movement relative to image-bearing subject(s) to be read.

Abstract: A swinging bucket centrifuge rotor has a plurality of peripheral cavities each adapted to seat a swinging bucket suspended from a fixed hanger. The hanger defines a hook which is adapted to support a cross-pin located in each bucket cap. Each bucket cap in turn is formed such that the shaft supporting the cross-pin is spring-loaded to permit its movement along the axis of the bucket. In this manner, a single rotor may accommodate different weight sets of buckets simply by varying the spring constant of the spring in the bucket cap.

Abstract: A swinging bucket centrifuge rotor has a plurality of peripheral cavities each adapted to seat a swinging bucket. Each cavity has a hanger which is slideably positioned in a receptacle in the rear of the cavity. The receptacle prevents rotation of the hanger about its path of movement. The extremity of the hanger forms a hook which is adapted to support a cross-pin located in the swinging bucket cap. The cross-pin is so positioned that the bucket must hang properly from the hook. In like manner the hook has an outwardly and downwardly sloping entrance opening which further aids in properly hanging a bucket.