Abstract:
Apparatus and method for redundantly checking a two dimensional array of containers or products before acceptance for later processing, such as sterilization by irradiation, by means of preferably at least one "dumb" detector (186) and one "smart" detector (187). The dumb detector looks at a predefined area (210) on each container of an array for a distinguishable indicia thereon, such as a reflective portion (206) on a non-reflective background. The smart detector reads an optical identification code (208) on each container only when the code is positioned at a predefined area (212) thereon. For an array to be accepted for processing, each container therein must satisfy all conditions. In a preferred embodiment, the dumb detector (186) for each container must sense a portion of distinguishable reflectance at a prescribed selected area (210) thereon; the optical identification code of each container must be detected at a prescribed selected area (212) thereon; and the smart detector must read the properly positioned optical identification code (208) and the read identification code must match an identification code stored by the processor (130) for each container. Moreover, it is preferred that no containers in the array be missing and that the containers not be excessively skewed. Codes for arrays that are accepted are stored in the processor (130) and each accepted array is channelled to be irradiated or otherwise processed as the array approaches the processing area along a conveyor.
Abstract:
A method of and devices (10, 20, 30, 50) for impact and vibration damping and, more particularly, to devices (10, 20, 30, 50) composed of an elastoplastic material including the characteristics of damping, heat and pressure dimensional stability, and moisture non absorbency of a blend of polyolefin and conjugated diene butyl rubber which converts impact shock or vibration energy into thermal energy.
Abstract:
In a high vacuum particle acceleration tube of the type in which a series of spaced apertured electrodes define the acceleration path, the apertured electrodes are provided with circular depressions of asymmetric V-shaped cross-section. The asymmetry is such that adjacent electrodes are closer to one another on the radially inward side of the V than on the radially outward side. Thus, arcing, if it occurs, is directed inwardly of the V and metal vapor is not deposited on the insulator. In addition, the V-configured recess acts to intercept high energy particles which are scattered out of the main beam, thereby protecting the glass insulators at the electrode periphery from radiation damage.