Abstract: Templates for the binding and synthesis of biological molecules are disclosed. The templates according to the invention consist of an atomically flat substrate and a three-dimensional pattern formed on the substrate by the positioning of individual atoms or molecules or groups of atoms or molecules to form hillocks. The hillocks are capable of binding to complementary portions of biological molecules or their component molecules.

Abstract: Fiber reinforced composite products of enhanced interlaminar ply strength and processes of producing same. In forming the products, layers of fibrous reinforcing material and resinous matrix material are established. The matrix material contains unset resin and short fibers of an average particle length of 0.2-0.6 mm in a weight ratio of short fibers to resin in the range of 0.4-1. The reinforcing material comprises fibers of a length substantially greater than the length of the short fibers in the matrix material. The fiber and matrix layers are integrated in order to cause the resin and short fibers which comprise the strengthened matrix material to enter into the interstitial spaces of the longer fiber reinforcing material. Thereafter, the matrix resin is solidified in order to arrive at the fiber reinforced composite product.

Abstract: Fiber reinforced composite products of enhanced interlaminar ply strength and processes of producing same. In forming the products, layers of fibrous reinforcing material and resinous matrix material are established. The matrix material contains unset resin and short fibers of an average particle length of 0.2-0.6 mm in a weight ratio of short fibers to resin in the range of 0.4-1. The reinforcing material comprises fibers of a length substantially greater than the length of the short fibers in the matrix material. The fiber and matrix layers are integrated in order to cause the resin and short fibers which comprise the strengthened matrix material to enter into the interstitial spaces of the longer fiber reinforcing material. Thereafter, the matrix resin is solidified in order to arrive at the fiber reinforced composite product.

Abstract: A land mobile radio communication system has a plurality of cell sites, each of which typically has a plurality of repeaters. The over-the-air radio communications between the cell site repeaters and the mobile radios in the system include both a voice component and a data component. The data component is carried as low-frequency subaudible information. Communication channels are provided between the radio users at each site as well as between users at different sites and between mobile radio users and the public telephone network. Within a cell site, the transmitted and received communications are digitized and passed through serial buses in a time multiplex fashion. The digitized voice is transferred between time slots to provide the required switching function. The system includes operational software to provide direct inward dial telephone number recognition, automatic voice prompts for a user entering a new cell, call priority override, fraud control for radio fleets and a dynamic control channel.

Abstract: An apparatus for interconnection in a helicopter tail rotor control linkage for changing the pitch of the tail rotor blades in response to predetermined inputs is provided. The apparatus comprises a linkage member having a variable geometry, an actuator, and a control unit. In a preferred embodiment, the control unit utilizes a microcontroller to monitor inputs corresponding to ambient air condition and automatically vary the maximum tail rotor pitch so as to provide maximum tail rotor authority over a range of altitudes.

Abstract: A line-up clamp (10) is disclosed for clamping small diameter pipe sections together for welding. The line-up clamp includes back-up shoe assemblies (106) which are pivoted into engagement with the interior surfaces of the pipe sections adjacent the weld as the clamp clamps the pipe sections. As the hydraulic cylinder (14) compresses the resilient disks, expanding the disks into clamping contact with the pipe sections, actuator bodies (58, 88) are urged together, with tapered surfaces on facing back-up shoe assemblies moving into contact and driving the back-up shoe assemblies into contact with the interior surfaces of the pipe sections at the point of welding.

Abstract: A metal particle detecting sensor (10), having a simple structure, can perform in-line analysis for metal particles in fluid and also can precisely estimate or detect the number of metal particles for each particle size. Metal films (1) and insulating films (2) are alternately laminated one upon another, and every other metal film (1) in the laminate is connected in parallel with one another to one of two lead wires (3a, 3b) so as to form comb electrodes in the laminate of the sensor, and one end face of the laminate is immersed in a fluid (4) containing metal particles so as to detect the metal particles.

Abstract: A system for providing enhanced multi-function, simplex or duplex RF wireless coverage of a service area, while operating at gigahertz frequencies, employing audio, video or telemetry programming, or any combination thereof; using AM, FM, Digital or Single Sideband modulation, or any combination thereof; from multiple transmitting sites located in a pattern around the outer perimeter of the service area to be provided coverage. All RF transmitter stations assigned to a given service area are fed substantially identical programming with each station employing a directional transmitting antenna thus producing a service area and thereby providing the basic implosion characteristics of the system. A highly directional antenna is employed at each customer's receiving location focused on its optimum transmission site. System vertical, horizontal or circular antenna polarization compatibility provides service area coverage consistent with minimum interference and signal distortion.

Abstract: A fluid valve can be disconnected from a fluid pressurized container by use of a changer tool having an elongated tubular housing, a tubular member positioned within and coaxial with the housing bore for slidable movement along the longitudinal axis, a shaft positioned within and coaxial with the bore of the tubular member for axial movement of the shaft with respect to the tubular member, a first retention member on one end of the shaft, a second retention member on one end of the tubular member, and an elastomeric tubular plug member positioned about the shaft between and in contact with the two retention members. Each of the two end portions of the elastomeric plug member is substantially harder than the intermediate portion of the elastomeric plug member, and is provided with an outwardly extending annular ring which engages an internal shoulder in the associated retention member to secure the retention member to the plug member.

Abstract: An integral pivot pad bushing seal bearing, adapted for sealing about a rotating shaft, includes a carrier ring having a radially inner generally cylindrical surface for providing a fluid seal about the shaft. A plurality of cavities are formed in the carrier ring so as to open in the radially inner generally cylindrical surface. Each cavity contains a pivot pad having a radially inner generally cylindrical pad surface which is substantially flush with the radially inner generally cylindrical surface of the carrier ring. The carrier ring and the pivot pads are contained in the same axial length as a unitary structure and act together to both seal and support the shaft. Each cavity can have a longitudinally extending groove in its radially outermost portion for receiving high pressure fluid to press each pivot pad inwardly toward the shaft. A second groove, in communication with the first groove, can be formed in a cavity end wall to apply high pressure to an axial face of the pivot pad.

Abstract: A plasma torch, capable of cutting in a dross free state, is made possible by increased energy density of the arc jet. The operation efficiency is not reduced even with a low operating gas flow rate, since the arc jet can be stably maintained in the plasma torch. The torch has a high double arc resistance and excellent durability. This is realized by forming a velocity reduction space N from near a lower end (3b) of the electrode (3) to a nozzle (9) at the front end of the plasma torch (1), the velocity reduction space being used for reducing the axial velocity component of the operating gas which flows along the outer periphery of an electrode (3). The velocity reduction space (N) is cylindrically shaped, and the diameter (Dd) of the cylindrical shape is larger than the diameter (da) of a lower end (3b) of the electrode (3).

Abstract: An oil well pumping unit has a walking beam which raises and lowers a rod connected to a downhole pump. To perform well analysis, it is desirable to know the position of the rod during the stroke. An accelerometer is mounted on the pumping system unit to move in conjunction with the rod. An output signal from the accelerometer is digitized and provided to a portable computer. The computer processes the digitized accelerometer signal to integrate it to first produce a velocity data set and second produce a position data set. Operations are carried out to modify the signal and produce a position trace with stroke markers to indicate positions of the rod during its cyclical operation.

Abstract: The present invention discloses an isolated and purified nucleic acid sequence and corresponding amino acid sequence to a novel protein specific for human lung cancer cells. This gene is expressed at a much higher level in these cells than in normal lung, other normal tissues and other tumor cell lines tested. Also disclosed are two additional recombinant forms of this gene and protein, in the first case a membrane spanning region is removed and in the second case an amino acid is changed by in vitro mutagenesis. Also disclosed are nucleic acid probes for the detection of lung cancer cells from tissue biopsy and body fluids such as serum, sputum and bronchial washings. A method for expressing the antigen in a host cell and its subsequent use as an immunogen in antibody production for test applications is described. An ELISA test to measure shed antigen present in patient samples as well as an enzyme test to measure activity in specimens also is described.

Abstract: A delivery signal device for use on a variety of mailbox types is provided. When the mailbox door is opened, a sliding--pivoting mechanism is engaged which releases an indicating member, thereby signaling that mail has been delivered.

Abstract: An interchangeable high capacity rifle magazine with an integral bolt stop assembly is disclosed. The magazine can be used with the Soviet 7.62.times.39 Simonov (SKS) rifle and for the Chinese copy, the Type 56 series rifles and carbines, and for all other copies thereof.

Abstract: A transfer press, capable of being easily transported, capable of being adjusted flexibly to changes in specifications, and capable of eliminating the idling of the transfer feeder, has a body (1) which is divided into a bed (2), uprights (3) provided vertically upon the bed, a pair of supporting beams (4) provided upon the uprights and disposed in spaced relationship with each other in a horizontal direction perpendicular to the direction in which a workpiece is fed, and a plurality of pressing units (5) each of which is independently provided for a respective one of a plurality of pressing operations. Each of the pressing units (5) comprises a crown (6) accommodating a slide-driving mechanism (8), and a slide (7). The crowns (6), provided for the individual pressing operations, are removably mounted upon the supporting beams (4). Slide guides (12) for guiding the vertical motion of the slides (7) are also provided on the supporting beams (4).

Abstract: An impoundment leak detection, location, and containment system comprises an impermeable grid having a plurality of leak detection modules positioned below the impoundment. A tunnel is located adjacent the impermeable grid, and a plurality of conduits provide fluid communication between each of the leak detection modules and the tunnel. Fluid leaking from the impoundment accumulates in the leak detection module directly below the leak and flows through the associated conduit where it is detected by a fluid sensor. The location of the leak is determined based on the known location of the leak detection module accumulating fluid.

Abstract: An orienting device for a perforator or the like to permit directing the tool at a selected angle relative to a ferrous element such as an adjacent casing string, and further an orienting device which is resistant to signal reversal resulting from ferrous non-uniformities in the region of the wellbore, the orienting device comprising an electromagnetic field source producing an alternating electromagnetic field and a receiver array longitudinally spaced from the electromagnetic field source, the disposition of the receiver array being such that the voltages induced therein vary differentially with the angle presented by the proximate ferrous elements by reason of the distortion of the otherwise axially symmetrical field. Electronic circuitry is provided to convert the differential voltages to a signal which is received at the surface and caused to register the orientation angle. A motor section is provided to rotate the device.

Abstract: A photoconductive isotype heterojunction impedance-matched infrared detector has blocking contacts which are positioned on the bottom side of the detector. The blocking contacts prevent transfer of minority carriers from the active region of the detector, thereby extending the lifetime of these carriers. The detector is formed by first fabricating an active layer followed by an isotype blocking layer on a growth substrate. These layers are etched and appropriate passivation layers and contacts are applied. A mechanical supporting substrate is applied to the detector and the growth substrate is removed. Etch stop holes are formed which extend into the active layer of the detector. A precision thickness of the active layer required in an impedance-matched detector design is produced by thinning the active layer in an etching process until the surface of the active layer reaches the etch stop hole.