摘要:
Improved orifice plates (54) such as, fluid jet orifice plates, photoetching masks or the like, include a substrate of highly corrosion resistant metal (56) and a layer of an amorphous metal alloy such as, an amorphous nickel-phosphorus alloy or an amorphous cobalt phosphorus alloy, the alloy layer and substrate together defining a predetermined array of openings (64) therein.
摘要:
For use in producing a package enclosing an electronic device, a lead frame (1) is first treated by electroplating, separately from any outer housing structure component of the package, so as to provide a working contact layer on outerlead parts (3) of the frame. The electronic device is then fixed in its desired position relative to the lead frame, and electrical connections are provided between the device and innerlead parts (2) of the frame, whereafter a housing structure is sealed around the device so that it is enclosed within that structure, but so that outerlead parts covered by the said working contact layer are left projecting from that structure. The electroplating of the lead frame whilst still separate from the housing structure can serve to avoid such problems as contamination of the electroplating bath by the housing structure.
摘要:
Improved gas-liquid contact apparatus for fractionating towers or other vessels which have beds of packing formed of stacked grids. The packing has a low pressure drop, good efficiency and minimal entrainment at high gas flow rates.
摘要:
An anode structure (15) for a cylindrical primary electrochemical cell. The anode structure in accordance with the invention includes a thin, circular, lithium metal disc (15a) having a central opening (15f) therein, and a small, thin, resilient, metal (e.g., nickel) contact member (15b) secured to the lithium disc (15a). The metal contact member (15b) is of a generally circular configuration and has a flat central portion with a circular opening (15e) therein aligned with the opening in the lithium disc (15a). The contact member has a plurality of tab portions (15d) extending outwardly from, and spaced at regular intervals about, its outer periphery, and a pair of spikes or barbs (15c) depending from opposed ends of each tab portion. The spikes are pressed into the soft lithium disc (15a) at points spaced from the opening therein for permanently securing the contact member to the disc. The contact member further has a plurality of notches spaced at regular intervals about the perimeter of the central opening thereby to define a plurality of resilient, deflective portions intermediate to the notches. The deflective portions lie in a flat, common plane with each of the deflective portions having an exposed edge facing a central axis of the contact member.
摘要:
A lead frame (20) for tape automated bonding includes individual leads (12) each having a stretch loop (40) to accommodate elongation of the loop as the lead is bonded to a substrate (28) after inner lead bonds have been formed to an integrated circuit (26). Such a lead frame allows temporary connection and testing of the circuit prior to final lead formation and packaging.