Abstract: An inventive cylinder liner of the prevent invention includes a dual phase graphite morphology. An outer diameter of the cylinder liner is comprised of ductile (nodular) and vermicular iron while an inner diameter of the cylinder liner is comprised of predominantly gray iron. A transition region of predominantly vermicular iron is preferably disposed between the inner diameter and the outer diameter. The inventive cylinder is preferably made using a centrifugal casting process, which provides a transition in the cylinder wall between the ductile and verimcular iron at the outer diameter to the predominantly gray iron at the inner diameter.

Abstract: A telephone network interface apparatus for use in the subscriber loop of a telephone transmission system, i.e., connected to a non-telephone company owned premise wiring (a consumer household) and a telephone company owned portion of such loop at the junction where the two connect to each other. The apparatus provides limited access to the open top base member, i.e., only a portion of the base member is made readily accessible to the consumer by providing a cover readily opened by him and a shield cover which may be readily opened by telephone company employees in order to provide access to electronic components owned by the telephone company disposed with the base member. Both covers are free of apertures communicating with the inside of he base member. The device includes a base structure which includes a first and second set of terminals and a plug and receptacle arrangement for disconnecting the premises wiring from the telephone transmission system.

Abstract: A method and apparatus for determining the fluorescence, luminescence, or absorption of a sample is provided. The sample may either be contained within a cuvette or within one or more sample wells within a multi-assay plate. A combination of a broadband source, monochromator, and a series of optical filters are used to tune the excitation wavelength to a predetermined value within a relatively wide wavelength band. A similar configuration is used to tune the detection wavelength. In one aspect, multiple optical filters are coupled to the excitation source subassembly, thus allowing the system to be quickly converted from one optical configuration to another. In another aspect, the excitation light and the detected sample emissions pass to and from an optical head assembly via a pair of optical fibers. In another aspect, an optical scanning head assembly is used that includes mirrored optics for coupling the excitation source to the sample and the emitted light to the detector.

Abstract: The present invention combines the gasoline vapor recovery efficiency advantages of a Hirt “Partial Seal System”, as disclosed, for example, in U.S. Pat. No. 4,680,004 to Hirt, with the customer convenience advantages of gasoline vapor recovery systems employing “bootless” nozzles. The use of bootless nozzles in combination with strict environmental vapor emissions compliance is made possible because of specific system advantages, which include the use of a burner designed to operate at two different flow rates, a coaxial processor stack which permits second and third stage combustion of excess gasoline vapor generated by the system before it is released to atmosphere, and a remote sensor which continually monitors system vacuum pressure to ensure that a sufficient vacuum is maintained at all times.

Abstract: An electronically steerable antenna array which includes time delay units connected to individual antenna elements for time delaying a microwave signal to and/or from the antenna elements. Each time delay unit includes small mercury wetted switches for controlling signal flow via a time delay path or a bypass path, through the time delay unit from a signal input to a signal output.

Abstract: A method of making an engine block for an internal combustion engine comprising making an engine block with cylinder bores, forming a spray-formed cylinder liner with a predetermined internal diameter and a predetermined external diameter, heating the cylinder block, inserting the cylinder liner in the bore, and permitting the cylinder block to cool such that the liner is locked in position in the bore by compressive forces. The spray-formed cylinder liner comprises a cylindrical body made of a material having predetermined thermal characteristics, wear resistant and scuff resistant materials. The cylindrical body has an external surface formed by spray forming and an internal surface formed by spray forming. The liner can have a single spray-formed layer or multiple spray-formed layers of different materials. The spray-formed liner is preferably heat treated in an inert atmosphere before being inserted in the block. In one form, the spray-formed liner has a radial flange at one end.

Abstract: Residential protection service center apparatus comprising AC power line overvoltage protection, telephone voice line overvoltage and overcurrent protection, high speed data line overvoltage and overcurrent protection and coaxial transmission line overvoltage protection, all tied to a common ground.

Abstract: Residential protection service center apparatus comprising an AC power meter, AC power line surge suppression, telephone line overvoltage protection and coaxial transmission line overvoltage protection, all tied to a common ground.

Abstract: Cable interconnection apparatus for connecting coaxial cable and fiber optic cable, the cable interconnection apparatus being adapted to be removably mounted in network interface devices containing subscriber bridge modules.

Abstract: A switch having spaced apart conductors with a high resistivity gate member therebetween. First and second mercury droplets are respectively connected to the ends of the conductors. When a control signal is applied to the gate member, the mercury droplets are drawn to it and establish electrical connection between the conductors to close the switch. Upon removal of the control signal the mercury droplets separate and assume their initial droplet form thus opening the switch.

Abstract: A network interface device for connecting telephone company lines and subscriber lines comprising an enclosure with a base and a cover and a socket having at least two sets of three switchable contacts, the first and second contacts (telco and customer) of each set being of a heavier gauge material than the third contact (test) of each set to improve reliability, the socket providing a point of demarcation between the telephone company and subscriber lines. Use of operational plugs (FIGS. 44, 47, 50) and dummy plugs (FIGS. 46, 49) is disclosed.

Abstract: Residential protection service center apparatus comprising an AC power meter, AC power line surge suppression, telephone line overvoltage protection and coaxial transmission line overvoltage protection, all tied to a common ground.

Abstract: A customer bridge module for connecting telephone company wiring and subscriber telephone wiring in a telephone network interface apparatus, the customer bridge module having a plug-actuated switchable socket and an overcurrent protection circuit, a half-ringer, a maintenance termination unit or a radio frequency interference (RFI) filter.

Abstract: X-band signals are generated from the output of a Josephson junction array which is excited by a first RF frequency waveform digitally implemented in a data stream generated by a digital waveform generator gated by a stabilized local oscillator operating at a second frequency (X-band). The Josephson junction array outputs a digital data stream having pulses of quantum mechanically accurate uniform amplitude and picosecond pulsewidth. These pulses are fed to a bandpass filter which operates to extract a low phase-noise RF signal at X-band and consisting of the sum of the first and second frequencies and which can thereafter be used to generate transmit signals in a radar system and more particularly a cryogenic radar system.

Abstract: A miniature station overvoltage protection module having a surge protector device and a back-up protector suitable for use on communication lines, includes a hollow housing having a top surface; a pair of line terminals and a ground terminal disposed in the housing top surface, extending inside the hollow housing. A holding bracket affixed to the housing ground terminal disposed within the hollow housing includes first and second conductors and a ground conductor, each of the first and second conductors extends towards one of the pair of line terminals and is in electrically conductive contact therewith; the ground conductor is in electrically conductive contact with the ground terminal. A surge arrester, having at least a pair of electrode terminals and a ground terminal connected to the housing ground terminal. Each one of the pair of surge arrester electrode terminals is in electrically conductive contact with one of the pair of line terminals.

Abstract: A plug-actuated switchable electrical socket having at least one set of three electrical contacts, two of the three contacts being of a heavier wire gauge than the third contact, the insertion of a plug in the socket effecting a switching action between at least two of the three contacts.

Abstract: Prodrugs containing an active drug molecule linked to a polyethylene glycol group, and a method of use thereof are described. Exemplary soluble ester prodrugs contain naproxen, triamcinolone acetonide, gancyclovir, taxol, cyclosporin, dideoxyinosine, trihydroxy steroids, and flurbiprofen molecules linked to polyethylene glycol (PEG) groups. Pharmaceutical compositions containing these prodrugs, and a method of using these esters for treating disease states or symptoms are also described.