Abstract:
A heat shrinkable tubular closure sleeve (204) having a riveted longitudinal seam. The sleeve (204) is formed from a sheet (100) comprising two longitudinal margin portions (102, 104) having a strip (120) of oriented, heat shrinkable material therebetween. Specifically, the two margin portion (102, 104) are overlapped and joined by rivets (202), each rivet (202) passing through a hole (106, 114) in each of the overlapping margin portions (102,104). Each margin portion (102, 104) comprises a laminate (108) having a metal layer (130) sandwiched between two plastic layers (132, 134) which do not shrink when heat is applied. Placing the tubular sleeve (204) over a cylindrical article (200) and applying heat to the sleeve (204), the strip (120) shrinks to reduce the radius of the sleeve (204) to effectuate a tight wrap around the article (200).
Abstract:
@ Apparatus and method for irradiating a plurality of cylindrical articles angularly spaced about the axis of and extending longitudinally along a cylindrical turret. The turret is reciprocated back and forth under a scanning beam of radiation to expose an arcuate section of at least one of the cylindrical articles to the beam. After predetermined reciprocation, the turret is rotated by an angular increment in order to expose a similar arcuate section of another cylindrical article to the beam. The turret is also translatable axially into and out of a shielded chamber which houses the beam. To permit maximum surface exposure to the beam, each cylindrical article is rotatable about its axis while the turret is reciprocated under the beam.
Abstract:
Cross-linkable polyethylene blended with a copolymer of isobutylene and a conjugated diene is capable of being cross-linked, bonded, stretched and recovered without a significant loss of strength characteristics or seal.
Abstract:
Verfahren zum Bestrahlen von strangförmigem Bestrahlgut (19; 19a–e), mit quer zur Längsachse des Bestrahlgutes (19; 19a–e) auftreffenden Elektronenstrahlen (18), welche das Bestrahlgut (19; 19a–e) aus zwei festen, zueinander in einem von Null verschiedenen Winkel stehenden Bestrahlungsrichtungen (R1, R2) treffen, dadurch gekennzeichnet, dass aus einem Elektronenstrahl (11) in einem Scanner (12) mittels einer Scaneinrichtung (13) ein gescannter Elektronenstrahl (17) erzeugt wird, welcher durch zeitlich gesteuertes Hin- und Herschwenken in einem vorgegebenen Winkelbereich quer zur Längsrichtung des Bestrahlgutes (19; 19a–e) einen Strahlenfächer erzeugt, und dass der gescannte Elektronenstrahl (17) durch einen zwischen der Scaneinrichtung (13) und dem Bestrahlgut (19; 19a–e) angeordneten Ablenkmagneten (16, 16') für jeden Scanwinkel des Strahlungsfeldes so abgelenkt wird, dass er aus einer der beiden festen Bestrahlungsrichtungen (R1, R2) auf das zu bestrahlende Bestrahlgut (19; 19a–e) trifft.
Abstract:
Provided herein is an electro-magnetic field former for controlling charged particle trajectories in a scanning charge particle source including a pair of induction coils and C-shaped ferromagnetic yokes which are positioned in the air space between the particle source and a target at the target edges to normalize the angle of incidence of the particles relatve to the target and to deflect scattered particles into the target edges. Also provided is a field former controller to compensate for induced flux variations caused by an oscillating particle beam.
Abstract:
METODO PARA LA FABRICACION DE UN ARTICULO DE PLASTICO. COMPRENDE LAS OPERACIONES DE FORMULAR, A UNA TEMPERATURA COMPRENDIDA ENTRE 65 Y 276 GRADOS, UNA COMPOSICION NO ABSORBENTE DE LA HUMEDAD A BASE DE UN 30 A UN 70% DE UN MATERIAL CAUCHOIDE, QUE INCLUYE CAUCHO DE BUTILO-DIENO CONJUGADO, Y UN 30 A UN 70% DE UNA POLIOLEFINA; DE FABRICAR A PARTIR DE LA COMPOSICION PREPARADA UN ARTICULO DE LA CONFIGURACION DESEADA CON APLICACION DE UNA PRESION DE AL MENOS 3.513 KG/CM DURANTE AL MENOS UN MINUTO; DE COLOCAR EL ARTICULO EDNTRE UN PRIMER OBJETO Y UN SEGUNDO OBJETO.
Abstract:
A system for regulating the electron beam emission of an accelerator has a filament whose temperature is controlled by pulse width modulation of the current flowing to the filament (8). A variable impedance transformer (4) serially connected between the filament and RF power source (4) is electronically switched between high and low impedance at a rate faster than the thermal time constant of the filament whereby the variations of current flowing in the filament are averaged by the thermal response time of the filament so that the temperature and electron emission level of the filament remain substantially constant. The impedance switching signal is generated in response to changes in current flowing in the high voltage coils of the accelerator. The pulse width can be modulated over a wide range to vary the electron current over a range greater than 2:1. The switching signal is transmitted across the high voltage gradient of the accelerator by an optical link including an LED coupled to a phototransistor (15) by a light pipe (16).
Abstract:
This invention relates to a method of and devices for impact and vibration damping and, more particularly, to devices 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:
This invention relates to a method of and devices for impact and vibration damping and, more particularly, to devices 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.