Abstract: An EMI/RFI shield assembly for shielding printed circuit board components, including a frame affixed to the PCB, and a lid connected to the frame. The frame sidewalls each have top and bottom portions. Each bottom portion includes formed series of crenels and merlons. The crenels have a termination edge disposed a predetermined distance from the merlons. The lid includes a cover wall portion and engagement elements extending therefrom such that at least one of the engagement elements is associated with each sidewall. Each engagement element includes a surface for connection with the frame at the upper terminating edge of one of the crenels, whereby said lid is biased toward the frame compensating for tolerance stack-up.

Abstract: A carrier tape suitable for facilitating in-line washing of components for use in pick-and-place operations. The components are loaded into their respective pockets after emerging from one or more forming machines, with the components having lubricant remaining thereon, and are placed into respective pockets of the carrier tape with lubricant remaining on the components. The carrier tape has a plurality of pockets for receiving respective components, with the pockets having washing openings through which cleaning fluid is imparted to the components and allowed to drain from the pockets as the pockets are passed through washing and drying stations. After being washed and dried, a cover strip is detachably adhered to the carrier tape to maintain the components in their respective pockets.

Abstract: Refractory material is applied to the interior surface of a vessel by advancing a boom carriage on a frame positioned externally of the vessel through an opening in the vessel. The boom carriage supports a collapsed telescoping mast and a nozzle boom. The carriage supporting the mast and nozzle boom is advanced through the opening to an elevated position within the vessel. At the end of travel of the boom carriage, the telescoping mast is pivoted through approximately 90.degree. to a vertical position and the nozzle boom is pivoted to a position perpendicular to the mast. The mast is progressively extended as the nozzle boom is rotated and refractory material is sprayed from a nozzle assembly on the end of the boom onto the vessel interior surface. The nozzle boom is transversely and pivotally movable on the mast to adjust the position of the nozzle assembly to follow the irregular contour on the interior surface as the mast is telescopically advanced or retracted.

Abstract: Refractory material is applied to the interior surface of a vessel by advancing a boom carriage on a frame positioned externally of the vessel through an opening in the vessel. The boom carriage supports a collapsed telescoping mast and a nozzle boom. The carriage supporting the mast and nozzle boom is advanced through the opening to an elevated position within the vessel. At the end of travel of the boom carriage, the telescoping mast is pivoted through approximately 90.degree. to a vertical position and the nozzle boom is pivoted to a position perpendicular to the mast. The mast is progressively extended as the nozzle boom is rotated and refractory material is sprayed from a nozzle assembly on the end of the boom onto the vessel interior surface. The nozzle boom is transversely and pivotally movable on the mast to adjust the position of the nozzle assembly to follow the irregular contour on the interior surface as the mast is telescopically advanced or retracted.

Abstract: A continuous supply of tubing is fed intermittently into a work station. Partial cuts are made at periodic intervals by a cutoff head that operates in timed relation with tube clamping device. Tube gripping device then pulls on the end portion or segment to position it precisely downstream of and in alignment with the freshly cut tubing end. A double tube end forming device moves in between the downstream end of the tubing and the upstream end of the tube segment. This device has tube end forming heads that include tooling for suitably shaping both these ends simultaneously.

Abstract: Method and apparatus to spray the interior surface of a refractory body, such as a blast furnace having circumferentially spaced windows above its mantle, each facing a different wall portion where the interior surface of the shell is most prone to corrode. Two window operations can be employed simultaneously to introduce supply pipes pivotally supported for pivoting about angularly related axes, such as horizontal and vertical axes, and pivoted about at least one of said axes while water is propelled through said elongated pipe to a corroded portion of said interior surface to remove scale from and clean said corroded surface. Air entrained granulated refractory material, preferably mixed with water to form a slurry, is propelled through said pipe to coat the clean interior surface. The two process operation is repeated for each window to clean and reline the entire perimeter of the wall portion if required.

Abstract: Method and apparatus to spray the interior surface of a refractory body, such as a blast furnace having circumferentially spaced windows above its mantle, each facing a different wall portion where the interior surface of the shell is most prone to corrode. Two window operations can be employed simultaneously to introduce supply pipes pivotally supported for pivoting about angularly related axes, such as horizontal and vertical axes, and pivoted about at least one of said axes while water is propelled through said elongated pipe to a corroded portion of said interior surface to remove scale from and clean said corroded surface. Air entrained granulated refractory material, preferably mixed with water to form a slurry, to propelled through said pipe to coat the clean interior surface. The two process operation is repeated for each window to clean and reline the entire perimeter of the wall portion if required.

Abstract: Molten pig iron flows from the hearth of a blast furnace down a runner positioned on the floor of a cast house and into ladles for receiving the iron. The runner is constructed by a plurality of precast refractory side blocks and an interconnecting base of compacted particulate refractory material to form a substantially U-shaped trough extending a preselected distance and along a preselected path from the hearth to one or more ladles for conveying the iron from the blast furnace. The trough has opposed upstanding side walls and a floor extending between the bottom of the side walls. The side walls are formed by individual side blocks positioned in abutting end to end relation on the cast house floor. The compacted base forming the trough floor extends between and interconnects with the side blocks. The adjacent ends of the side blocks are notched to form a joint for receiving castable refractory material which upon setting interlocks the ends of adjacent side blocks.

Abstract: Molten pig iron flows from the hearth of a blast furnace down a runner positioned on the floor of a cast house and into ladles for receiving the iron. The runner is constructed by a plurality of precast refractory side blocks and an interconnecting base of compacted particulate refractory material to form a substantially U-shaped trough extending a preselected distance and along a preselected path from the hearth to one or more ladles for conveying the iron from the blast furnace. The trough has opposed upstanding side walls and a floor extending between the bottom of the side walls. The side walls are formed by individual side blocks positioned in abutting end to end relation on the cast house floor. The compacted base forming the trough floor extends between and interconnects with the side blocks. The adjacent ends of the side blocks are notched to form a joint for receiving castable refractory material which upon setting interlocks the ends of adjacent side blocks.

Abstract: A spalled and deteriorated portion of a refractory brick heating wall of a coke oven heating chamber is dismantled. The deteriorated brick is removed with the undamaged brick remaining in place. Individual thermally destructable forms forming the gas flow passageways are vertically erected surrounding ports in the floor through which preheated gas and preheated air are separately supplied into the heating chamber. A second set of destructable forms having passageways forming the heating flues for receiving the products of combustion are positioned between the forms for the gas flow passageways. Horizontal forms, also forming gas flow passageways, connect adjacent vertical forms for the flow of air and gas from the ports into the heating flues where combustion of the air and gas takes place. When the thermally destructable forms are in place, a refractory material is sprayed onto the outer surfaces of the forms.

Abstract: A housing having an interior chamber with an inlet and outlet thereto is suspended by a crane within a ladle or furnace having an interior refractory surface to be relined. A feed conduit for conveying dry refractory material entrained in an air stream extends through the inlet into the interior chamber. A nozzle assembly having a pair of oppositely positioned spray nozzles is rotatably supported in the outlet of the housing. A conduit of the nozzle assembly is rotatably connected at one end by a coupling to the feed conduit within the housing and communicates with the spray nozzles. Each of the spray nozzles includes a water ring that receives a wetting agent, such as water, from a supply conduit that is connected by a swivel assembly to the nozzles to permit rotation of the nozzles relative to the supply conduit. Each water ring directs the water into mixture with the air entrained dry refractory material flowing through the nozzle.

Abstract: A housing having an interior chamber with an inlet and outlet thereto is suspended by a crane within a ladle or furnace having an interior refractory surface to be relined. A feed conduit for conveying dry refractory material entrained in an air stream extends through the inlet into the interior chamber. A nozzle assembly having a pair of oppositely positioned spray nozzles is rotatably supported in the outlet of the housing. A conduit of the nozzle assembly is rotatably connected at one end by a coupling to the feed conduit within the housing and communicates with the spray nozzles. Each of the spray nozzles includes a water ring that receives a wetting agent, such as water, from a supply conduit that is connected by a swivel assembly to the nozzles to permit rotation of the nozzles relative to the supply conduit. Each water ring directs the water into mixture with the air entrained dry refractory material flowing through the nozzle.