Abstract: A miniature terminator for a miniature coaxial cable includes a center signal contact extending along an axial extent of the terminator, a second tubular sleeve contact coaxially positioned with respect to the signal contact and having an external contact surface for electrically connecting with an external member for grounding or shielding, a spacer for maintaining electrical isolation and spaced relation of the contacts, and a strain relief for mechanically securing the terminator to the coaxial cable. The terminator impedance substantially matches the impedance of the coaxial cable itself and this characteristic plus miniaturization help make the terminator appear physically and operationally as an extension of the coaxial cable. The invention also relates to a terminator system for coupling a plurality of coaxial cables terminated with respective terminators to further circuitry.

Abstract: An oil and gas fueled hot water heater system having improved efficiency and performance embodies air and fuel regulator valves, water and air supply jackets, cold and hot water insulating check valves, and flow directors and restrictors for the hot combustion gas generated by the heater burner which gas passes through a central flue in a water storage tank and is then exhausted through an exhaust vent to atmosphere. The air and fuel regulator valves are non-electrically controlled and are responsive to water demand requirements for improved heater efficiency and performance. The water supply jacket closely surrounds the central flue and receives supply water at the top thereof and discharges same to the bottom of the storage tank thereby increasing the heat transfer characteristics of the heater. The air supply jacket surrounds the exhaust vent and air is drawn in through the top of the jacket along the exhaust vent for preheating and then is directed to the burner to support combustion.

Abstract: An electrical component for mechanical mouting and electrical connection with respect to plated through holes of a printed circuit board compatibly with a surface mount attaching process includes an electrically non-conducting body, plural generally elongate contacts extending from the body for insertion into such plated through holes, and the component having a reservoir for retaining solder type material for melting, for flow into respective plated through holes, and for re-solidifying to mechanically and electrically couple the component to such printed circuit board. Preferably the component is a connector, such as a header, and the contact pins or leads thereof provide an interface connection between the printed circuit board and a separate or portable connector.

Abstract: A polybutylene tubing coupling and method of making that coupling utilizes a male tubular connector element having the same inside diameter as the major extent of the tubing. A coupling element is provided with stop shoulder at one end and a series of annular radially projecting barbs on its outside diameter which are preferably undercut in the direction of the stop shoulder or tubing end. An end of the tube is treated preferably by heating to enable the material to expand and the tubing end is inserted on or slipped over the male element against the stop shoulder. In such position the treated tubing end is mechanically compressed between two semi-circular dies to cause the material of the treated tubing end to flow around the barbs. Thereafter a metal crimp is placed around the tubing end between the stop shoulder and the next adjacent barb, or over the top of one or all barbs. The tubing connection thus formed is then permitted to cool at ambient temperature for approximately 7 days.

Abstract: The present invention relates to use of liquid crystal material encapsulated in a containment medium to produce a controlled colored or multicolored output, for example, in response to the application, removal and variation in an electric field. A non-pleohroic dye is imbibed in the containment medium itself. Different color dyes may be placed at different areas of the encapsulated liquid crystal structure to achieve different color outputs. In the imbibing process water soluble dye is applied to the exposed surface of a water base containment medium of already encapsulated liquid crystal material. Humidity is applied, and the dye imbibes into a proximate area of the containment medium preferably going into solution therewith.

Abstract: Lock mechanism includes a first sleeve on the inner end of the outer telescoping member having a forward extension with a non-circular central passage therethrough for close sliding receipt of a non-circular external surface on the inner tubular member to prevent relative rotation between the telescoping members. The forward extension has an external circumferential groove, and a radial opening extending through the bottom of the groove for receipt of a ball that successively engages a plurality of longitudinally spaced sockets in one of the non-circular sides of the inner telescoping member during relative longitudinal movement therebetween.

Abstract: In a decoder suitable for use in a paging receiver of the type responsive to a transmission which includes a preamble sequence followed by batches each containing a synchronization word followed by a plurality of address and/or message words, the decoder is operative to detect a single synchronization word. Thereafter, the decoder is powered up to search in its specific frame in each batch by means of a clock which has been synchronized with the transmission and which provides the timing for searching in the specific frame of all subsequent batches.The clock may have coarse and fine modes of timing control, the coarse mode being applicable when initial bit synchronization is being attained, and the fine mode being applied subsequently to reduce the risk of the clock drifting out of synchronization.

Abstract: An aqueous acidic plating bath for electrodeposition of tin, lead or tin-lead alloys on a substrate is described. The plating baths are free of fluoride and fluoborate ions and comprise (A) at least one bath-soluble metal salt selected from the group consisting of a stannous salt, a lead salt, or a mixture of stannous and lead salts, (B) at least one alkane sulfonic acid or alkanolsulfonic acid, (C) at least one surfactant, (D) an effective amount of at least one primary brightening agent selected from the group consisting of halogen substituted and dialkoxy and trialkoxy substituted benzaldehydes, (E) an effective amount of a secondary brightening agent which is at least one lower aliphatic aldehyde, and (F) an effective amount of an auxiliary brightening agent which is at least one of the group consisting of aniline and the amino-, carboxy-, halo-, alkyl- or alkoxy-substituted anilines. Methods for the electrodeposition of tin, lead, or tin-lead alloys from such baths also are described.

Abstract: Flat pad applicator includes a base member having a pair of laterally spaced apart tapered pins between which the hub portion of a handle is snapped into position for rotatably mounting the handle on the base member. The hub portion has a plurality of circumferentially spaced indexing notches in the outer periphery thereof which may be selectively engaged by an indexing locking rib carried by a cantilevered tongue on the base member for releasably locking the handle in any one of several angularly adjusted positions. The pad assembly itself includes a backing plate made out of a magnetic material to permit a magnet to be used for easy attachment and removal of the pad assembly from the base member for cleaning and/or replacement.

Abstract: A system to remove contaminants from water includes, in the pressurized water flow lines, a venturi nozzle assembly to entrain air in the water, a pressure tank to store and deliver the air laden water, an aerator/precipitator tank assembly to remove the excess air and any residual gases from the water in the pressurized system and to remove contaminants from the water and a filter tank having a filtration bed therein to remove the remaining precipitated contaminants from the water and to deliver the water to service.

Abstract: A three way joint for a frame structure comprises a location piece secured to one end of a first transverse member and having two spaced protrusions extending axially of the first transverse member and a screw threaded nut (not shown); a second transverse member to engage over the location piece and having apertures to receive the protrusions and a further aperture and an upright frame member having apertures therein to receive the protrusions; and a further aperture to receive a bolt, the bolt passing through the apertures and engaging in the nut to clamp the three members together. A reinforcing member may be included.

Abstract: Dust mop frame includes a plastic molded base member having a substantially flat bottom surface for applying uniform pressure over substantially the entire surface of the dust mop and a rigid hinge member securely molded in place in spaced relation to the back side of the base member to facilitate attachment of a handle to the dust mop frame. The hinge member is supported adjacent its ends by a pair of laterally spaced, transversely extending ribs integrally molded to the back side of the base member. The ends of the hinge member extend completely through the transverse ribs into a pair of longitudinally extending ribs integral with the axial outer sides of the transverse ribs intermediate the ends thereof and also integral with a peripheral rib around the outer edge of the base member.

Abstract: A sensor apparatus is disclosed for sensing substances, species, substrates, etc. using oxidase. The apparatus includes a pair of potentiostat operating electrode systems. In one embodiment each electrode system includes respective working, counter and reference electrodes, and in another embodiment each electrode system includes a respective working electrode and the counter and reference electrodes are shared by both electrode systems. The oxidase material is immobilized on the working electrode of one of the electrode systems. A method also is disclosed for concentration sensing using oxidases.

Abstract: The present invention relates to an estrogen complex which consists of an estrogen or an estrogen derivative complexed with an organometallic compound containing at least one free carbonyl ligand, the said estrogen complex containing at least one free hydroxyl radical and no free phenolic hydroxyl radical in the .alpha.-position to the site where the organometallic compound is attached.The complexes according to the invention are useful for the determination of hormone receptors.

Abstract: An electrode holder assembly for a cylindrical electric arc melting furnace permits reduction of the electrode pitch circle diameter spacing the electrodes farther from the refractory lining reducing refractory wear and lengthening cycles between relining. The assembly also permits more power to be introduced while reducing overall reactance, both resulting in a more efficient furnace. The arrangement also provides reduced melting time in turn resulting in more furnace capacity, thus reducing electrode consumption per ton of molten metal. The arrangement is achieved by an improved simplified and compact differential clamp mounted inboard of a relatively thin U-shape clamp enabling the distal ends of the two outer arms of the three mast arms employed to be angled toward each other and the center mast arm to reduce the diameter of the electrode pitch circle.

Abstract: A method of treating phosphated metal surfaces to improve the corrosion-inhibiting properties of the metal surfaces and to improve the adhesion of siccative organic coatings thereto is described. The method comprises treating a phosphated metal surface with an aqueous mixture of an aluminum zirconium complex comprising the reaction product of a chelated aluminum moiety, an organofunctional ligand, and a zirconium oxyhalide. Optionally, though not required, the complex treated phosphated metal surfaces can be rinsed with water prior to the application of a siccative organic coating. In lieu of, or in addition to, a siccative organic coating, the complex treated, phosphated metal surfaces can be given a seal coating of a rust-inhibiting oil. Metal surfaces and metal articles treated in accordance with the method of the present invention also are described.

Abstract: A rotating and reciprocating positive displacement mechanism which draws in a metered volume of gas and then expands or compresses that quantity of gas before expelling it. The mechanism has useful application as a compressor, a compressed gas motor, an expanding vapor engine, or a hot gas engine, where generation of heat by combustion can be either internal or external to the expansion mechanism. The primary advantages of the mechanism over conventional mechanisms used in these applications include (1) few moving parts, (2) easily constructed parts of simple geometry, (3) feasibility of compound operation (i.e. two-stage expansion or compression), (4) relatively constant input or output torque throughout the operating cycle, and (5) relative absence of high pressure peaks during the operating cycle (even when used as an internal combustion engine).

Abstract: An optical indicator apparatus includes an optical output device for producing a light output in response to an electrical input thereto, a hollow housing for supporting the optical output device relative to another device to permit viewing of light output by the optical output device, electrical input leads extending through at least a portion of the housing for receiving such electrical input and coupling the same to cause the optical output device to produce an output indicating receipt of such electrical input, and seal material for sealing in substantially fluid-tight relation in the hollow housing at least part of the optical output device and at least part of the electrical input leads while holding the same in relatively fixed position in the hollow housing.

Abstract: Interlocking vinyl siding panels are formed from vinyl sheets. A sheet of vinyl is extruded with a V-shaped bend along one of its edges, and a Z-shaped bend intermediate its edges. The extruded sheet of vinyl is then formed, while in a hot, semi-viscous state into the final siding profile. As the siding profile is formed, the V-shaped bend is formed into a first locking profile and the Z-shaped bend is formed into a second locking profile. The first locking profile is dimensioned for a snap-type engagement with the second locking profile of another similarly formed siding member.

Abstract: An improved process for preserving wood by impregnating the wood with metal salts is described. More particularly, the improved process comprises the steps of(A) contacting wood in a vessel with a solution containing at least one soluble metal salt of an organic carboxylic acid under conditions of time, temperature and pressure which are sufficient(i) to effect penetration of the solution into the wood, and(ii) to maintain the metal:acid ratio in the solution removed from the wood in step (B) substantially the same as the metal:acid ratio in the solution used to impregnate the wood in this step (A),(B) removing at least some of the solution from the wood by reducing the pressure within the vessel, and(C) subsequently heating the wood to a temperature sufficient to fix the metal to the wood.