Abstract: A reaction product of a .beta.-diketone and a polymer having groups that are reactive with the .beta.-diketone can be complexed with a metal. The reaction product having the complex metal can be activated to provide a substrate suitable for plating from an electroless metal plating bath.

Abstract: A molded case circuit breaker is provided with a quick change current transformer assembly. The current transformer is used to sense overcurrent conditions and apply a signal to an electronic trip unit to trip the circuit breaker. The quick change assembly includes an insulated removable plate located adjacent an open cavity in the housing in which the current transformer is located. The current transformer is donut-type disposed about a load-side conductor located in a cavity in the housing rigidly fastened to the circuit breaker frame. In order to replace a current transformer, the insulated backplate is removed. Next the load-side conductor is unfastened and removed from the circuit breaker housing. The current transformer is then removed from the circuit breaker housing. In order to install a new current transformer, the steps are reversed. A force transmitting spacer is disposed adjacent a bight portion of a shunt, connected between a pivotally mounted contact arm and a load-side conductor.

Abstract: The method of making a therapeutic mattress comprised of taking a first sheet of fabric material of rectangular shape, then taking a second sheet of fabric material and folding it over to provide a top cover and an underlying intermediate bottom fabric cover of the same dimensions as the first sheet; and thereafter, applying a plurality of parallel spaced rows of stitching across the width of the top cover and intermediate bottom cover. Further steps include, superimposing the folded over second fabric sheet over the first fabric sheet and peripherally stitching the top fabric cover, the intermediate bottom fabric cover and the bottom fabric cover together defining a series of rectangular tubes within the top cover and intermediate bottom cover, and a unit chamber between the bottom intermediate cover and the bottom cover.

Abstract: A swellable cannula is formed of concentric inner and outer hydrophilic and substantially non-hydrophilic layer structures. The hydrophilic layer structure comprises at least 2/3rds of the cross-sectional area of the wall of the cannula. The substantially non-hydrophilic layer structure is either substantially water impermeable or allows water to pass through at a controlled rate. The substantially non-hydrophilic layer structure may also control the diffusion of medicaments. The cannula has controlled softenability and swellability characteristics.

Abstract: A note roll (A,C) is disclosed for a dispensing device, (10,30) the note roll includes paper having a first side (11a) which is clean for note writing. A second side (11b) of the paper includes a self-stick adhesive strip (B,B') by which indeterminate or pre-determined lengths of paper may be dispensed from the roll with sufficient self-stick adhesive for attachment to a desired surface. Self-stick adhesive (B) is disposed on the paper of the note roll along its length and down a medial portion so that paper may be dispensed in indeterminate lengths with a strip of adhesive along the back. Multiple pre-determined pieces (13) of paper may be dispensed at one time or may be torn at perforations (12).

Abstract: A non-collapsible fish net apparatus (31) with capturing method, comprising an endless net (33) mounted on spaced rigid hoops (37, 38) preventing collapse, a skirt (39) below the lower hoop (38) foldable on itself, apparatus support lines (45) mounted to the upper hoop (37), control lines (51) folding and unfolding the skirt (39), a draw line (62) about the skirt (39), a closure weight (57) attached to the draw line (62), and a line (58) for dropping the weight (57) farther down to close off the skirt (39). Buoys (55) on the control lines (51) provide a signal for actuating the weight (57). Corks (44) on the upper hoop (37) float apparatus (31). A wave netting (70) at the upper hoop (37) prevents fish escape in a wave cascade over apparatus (31). A quick-disconnect assembly (65) on the draw line (62) distal to the closure weight (57) opens the skirt (39) in event of apparatus overload.

Abstract: A coherent phase and frequency recovery method capable of rapidly recovering the phase and frequency of bursts of received signals from plural sources. The received signal is applied to a first input of a mixer, the output of which is amplified and applied to two feedback paths, one for frequency and the other for phase. The frequency path contains a loop filter driving a voltage-controlled oscillator, and the phase path a loop filter and amplifier. Initial estimates of the phase and frequency of the present burst are derived and injected into the respective feedback paths. The output of the phase path is applied to correct the phase of the output of the frequency path, which is then applied to a second input of the mixer.

Abstract: The disclosure pertains to parallel analog-digital converters, the first comparator stage of which give a so-called thermometer scale, formed by a sequence of logic "ones" and logic "zeros". According to the disclosure, a corrector stage is added on in series with the comparator stage. If a comparator of the first stage accidentally gives a logic value opposite that given by the two neighboring comparators, the corrector stages forces the accidentally erroneous value to assume the same value as that the values given by the two neighboring comparators, if and only if these values are equal. The disclosed device can be applied to signal processing ADCs.

Abstract: A carrier for an integrated circuit package is disclosed which comprises a base (30) suitable for receiving an integrated circuit package with unformed leads (20') or formed leads (20), a cover (60), flexible material (66), such as an elastomer, disposed between the cover (60) and base (30) surfaces, and pressure is maintained across the cover (60) and base (30) by way of finger (44) on a clip (40) on the base (30) engaging latching edges (68) of cover (60). The leads (22) of the integrated circuit package (20, 20') are thereby secured in position by the elastomeric material (66) which forms itself partially around each of the leads in response to pressure applied across the base (30) and cover (60) as hereinabove described. The disclosed invention eliminates the need for separate grooves or nests in the base (30) of the carrier for each lead of the integrated circuit package.

Abstract: After the etching away of copper to selectively expose surface areas of insulating material in a printed circuit process based upon copper foil-clad insulating substrate material, the exposed surface areas of insulating material are contacted with an aqueous alkaline permanganate solution to remove from the areas residual metal species associated therewith so as to improve the electrical resistance afforded by those areas in the printed circuit.

Abstract: Apparatus useful in forming a mold from a wax pattern in an investment casting process, the invention provides a loop element having arm elements which spiral downwardly from and inwardly of the loop element to a base element. Sprue pins mount wax patterns to the loop element in a casting process known as the "lost wax" technique, the apparatus of the invention being particularly useful in the environment of a dental laboratory for formation of crowns and the like of high density. The loop element and arm elements of the apparatus leave channels in the investment material on "burn out" which quickly accelerate a casting material, such as a metal alloy, into the formed mold or molds with a reduction of turbulence which results in fewer defective castings. The channel geometry provided by the apparatus provides benefits due to a lack of right angles or sharp corners which restrict the flow of casting material into the mold or molds.

Abstract: A carrier for lifting, transporting and dumping a large load box or the like is provided including a wheeled trailer having a plurality of frame members and a forwardly projecting tongue for pivotal connection to a tractor. A first hydraulic cylinder is provided for raising and lowering the trailer frame with respect to the trailer wheels. A pair of laterally spaced jaw members are secured to the rear cross frame member of the trailer to receive transverse hinge pins secured to the underside of the load box adjacent its rear end and a latch plate is provided to lock the transverse hinge pins in the jaws.

Abstract: A writing instrument A with note paper 36, 38 is disclosed which includes a retractable writing instrument carrier 10 and a paper storage chamber E from which paper may be dispensed through a dispensing slot 42 formed along a substantial portion of a barrel B of the device P. Carrier 10 includes a reservoir 12 of writing medium and a writing point 12. A thumb operator 32 provides for positioning of the carrier in a writing or retracted position. The carrier also may move axially along a slot 24 to position a spare paper roll 38 in a dispensing position as paper roll 36.

Abstract: The removal of a glycol contaminant from a mixture of polyalkylene glycol dialkyl ethers is achieved using a dual solvent extraction process. The process is particularly applicable to removing glycols which accumulate in recirculating solutions of polyalkylene glycol dialkyl ethers used for the absorption of acid gases from feedstocks such as natural gas, synthetic natural gas, refinery gas, and ammonia synthesis gas.

Abstract: The improved adjustment mechanism for work clamping includes a support member which is arranged for attachment to a supporting arm. The support member has a plurality of serrations which are regularlhy spaced across a generally planar support face formed on the support member. A clamping member is arranged for attachment to a locator block and includes a plurality of serrations regularly spaced across a generally planar clamp face. The clamping member is adjustably movable with respect to the support member. A tension member such as a bolt maintains the serrations of the support face and the clamp face in fixed positional engagement with one another when the mechanism is used for work clamping. The tension member is releasable for permitting adjustment of the position of the clamping member relative to that of the support member.

Abstract: A therapeutic mattress comprises a soft, resilient bottom mattress section and a plurality of interconnected top mattress sections and peripherally interconnected. The top section includes top and bottom fabric covers peripherally interconnected. A plurality of parallel rows of stitching interconnect the top and bottom covers and with the peripherally stitching define a plurality of transverse rectangular tubes filled with a compacted resilient fibrous material. The bottom mattress section includes a bottom fabric cover spaced from the top section bottom cover and peripherally interconnected defining an elongated rectangular chamber underlying the top mattress sections. A loosely confined resilient fibrous material is enclosed and retained within the chamber yieldably underlying the top mattress sections.

Abstract: A latch (29) is set by a clock (33) to turn on power switch (FET 5). The latch (29) is reset by high voltage comparator (21), by a 50 percent clock delay (35) and by a low-voltage-to-charging-current comparator (19). The voltage at turn-on is compared with a up-ramping reference (15) until it equals an operating reference (17). A temporary delay (pulse circuit 39 and gate 37) is provided before the low voltage comparison can be effective. The delay prevents response to parasitic effects across the power switch (5). Excess drive is prevented resulting from low output currents and malfunctions, and at turn-on.

Abstract: A monitoring system for providing continuous monitoring of a patient, including periods of transport, includes a data acquisition and processing module receiving physiological data from the patient. The module may be inserted in a bedside display unit to display the physiological condition data being monitored. The module may also be inserted in a portable display unit that can accompany the patient during transport. Connectors permit the module to simultaneously drive both the display units so that no data is lost when the module is removed from the bedside unit and placed in the portable unit and vice versa.

Abstract: A modem with improved signal processing and handshaking capabilities as described. Two digital signal processors are used to perform independent, concurrent operations so that a faster execution rate is obtained and more precise calculations are made possible. The modem also uses an improved handshaking technique which allows the modem to maintain compatibility with existing 1200 and 2400 bps modems while allowing for negotiation for 4800 and 9600 bps communications. The modem also incorporates an improved baud clock recovery circuit which dynamically adjusts the actual sampling point in a manner dependent upon the difference between the actual sampling point and the optimal sampling point. This allows the actual sampling point to converge upon the desired sampling point at a high rate while minimizing jitter around the optimal sampling point.