Abstract: A masking tape for EMI shielding applications comprising an adhesive layer, a metal foil layer adhered to the top of the adhesive layer, two or more adhesive strips running parallel to the edges of the tape and extending the length of the foil along the strips are preferably inset from the outer edges of the foil so as to form a stepped or notch-like configuration. A mask layer is attached to the top of the strips. The mask alone or the mask and strips are designed to be removed after use. The tape is applied to a substrate such as a computer cabinet, the cabinet is then sprayed with a paint or finish coat and the mask is removed to reveal a conductive metal foil surface to which a conductive EMI shield can be mounted.

Abstract: A keg tap described is for domestic use, and in it an axially shiftable valve-opening rod (3) with a valve-opening element (4) is guided through an essentially cylindrical housing (1) enclosing a pressure space (2) and is inserted through a piston (8) which is arranged in the lower region of the housing (1) and which limits the pressure space (2) located here. The valve-opening rod (3) is at the same time a riser pipe and has a continuous liquid passage (7) which leads outwards from the valve-opening element (4) at one end and which, at the opposite end, merges into a liquid duct (17) cut out in a stirrup (15) arranged essentially at right angles to the liquid passage (7) and equipped with a shut-off valve (19) and with a consequently closable outflow (18). The piston (8) closing off the pressure space (2) is connected via piston rods (14) to a handle (5), by means of which the piston ( 8) is actuated independently of the valve-opening rod (3).

Abstract: In order to maintain document feed tractors, especially of the type which have timing belts made of the elastomeric (rubber or plastic) material, in circumferential registration with the sprocket which engages and can drive the belt, a member is disposed circumferentially outward from the sprocket between the sides of the belt where the pins thereon can engage the perforations in the document. This member presents a spaced circumferential retainer outward from the sprocket a distance slightly greater than the altitude of the pins. Preferably this wall has a notch in alignment with the pins and which the pins slightly clear and are guided. The member provides for minimal frictional drag on the belt while maintaining the circumferential registration of the belt on the sprocket.

Abstract: A tractor for feeding perforated webs, such as perforated paper in a computer printer, typewriter or the like has a frame which locates a sprocket and a belt having pins projecting from the belt and lugs driven by the sprocket. To provide precision feeding of the web the lid is arranged with respect to the frame so that the web is maintained substantially at the pitch line of the belt where the pins enter, are engaged by and leave the perforations. The distance between the surface of the lid which faces the belt and the belt surface is limited such that the perforations contact the pin surface below a critical position where the web clings to the pins. This is the position where the angle between the surface of the belt and a line from the position of repose perpendicular to a tangent to pin surface which intersects the belt surface is equal to the art tangent of the coefficient of friction between the web and pin materials.

Abstract: Modification of a starch hydrolyzed polyacrylonitrile graft copolymer with aluminum or with aluminum and a polyhydric alcohol.

Abstract: A method and apparatus for bagging a garment which is supported on a hanger wherein the bag is closed at both the upper and lower ends. The bag is placed or formed about the garment and the upper end, through which the hook extends, is closed with the hanger supported at a first station. The bagged garment is then moved to a second station where the lower end of the bag is sealed. The method and apparatus are disclosed in preferred embodiments wherein the entire bagging operation, including bottom sealing, is carried out in a completely automated manner.

Abstract: The present invention is a safety device which will cause the signal indicator lights of a vehicle and any vehicle being towed thereby to simultaneously flash on and off when the vehicle is being backed; thereby providing warning to pedestrians and other members of the driving public in the vicinity.