Abstract: A Floppy Disk magnetic information storage and retrieval unit with a stepping motor lead screw driving a half-nut of the read/write head carriage. The read/write head carriages used are interchangeable modules and the stepper motor, carriage drive lead screw and a mounting plate are also in the form of interchangeable modules for Floppy Disk units equipped with registration banking button positioning for minimized tolerance variation between interchangeable modular assemblies for simplified reliable field maintainance and lower cost.

Abstract: An alignment structure for end-to-end positioned multi-channeled seats and footboards such as may be used for seating stadium stands. I-beam shaped inserts positioned in front and rear channels of two end-to-end seat sections (or footboards), and conforming with channel shape, span the joint between the seat sections and extend endwise into each to maintain end-to-end alignment between the seat sections. Each insert is anchored in one or the other of the end-to-end seat sections and permits expansion and contraction displacement movement between the seat sections.

Abstract: An annular built up seal section on a diaphragm used for closing the end of a large tube with the annular built up seal section sized for sealing engagement with the tube end.

Abstract: A pad of general equilateral triangle shape is formed with a central through-aperture and with a through-slot extending from the aperture to one side of the pad, with a notch extending inwardly from the pad side and communicating with the slot. The slot facilitates placement of the pad over the shank of a hook attached to a line or to a fishing lure device, with the hook points being imbeddable into the underside of the pad. Individual pad conformation facilitates production of multiple pads in nested interrelationship as by incomplete die stamping, with minimal waste of material, while permitting choice of selected interconnected groupings of pads for ease of packaging, marketing, and user handling and storage.

Abstract: A thread chaser tool with cutting edge defined by two symetrical points. The tip radii of the two points are spaced apart slightly less than the pitch of a thread to be cut. The thread form is generated by the inside flanks of each point and a crestforming radius there between. Both points cooperate in forming the long flanks of either male or female tapered threads, and both points form straight threads having two roots.

Abstract: A lead sight with numbers coinciding with the numbered positions on a standard skeet range printed on a transversely extended transparent member mounted by a strap above gun barrels toward the muzzle end. "High" and "Low", also imprinted on the transparent member, correspond to the high house and the low house from which the clay pigeons are released. The "lead sight" helps the beginner in skeet shooting to lead the bird properly and helps the experienced shooter having a problem with one or more positions.

Abstract: A truck trailer interior washing system with a washing head mounted on an extendable and retractable boom horizontally mounted for automated washing cycle extension into and back out of the trailer interior. A truck body or trailer is backed into exact position, centered and aligned with the boom, with the use of guide rails and a centering plate structure automatically moving trailer wheels laterally in a centering action as required. When the system is activated, a pump is started to deliver hot detergent solution to the nozzled cleaning head from wash fluid back-up tanks and heaters as the extension boom is moved into the trailer at a predetermined rate (50' per minute, for example). A feeler bar and microswitch system senses when the inside nose of the trailer is reached and acts to stop the boom in the extended position for a short interval of time during which the pump and feed mechanism clears itself of detergent solution with microswitch activated clear hot water flush to the nozzles.

Abstract: An instrument for recordation and time monitoring of pressure, as at a remote wellhead site. The instrument is battery powered, and means for conservation of battery power include powering the device intermittently under control of low power-drain CMOS clock timing circuits. Relatively higher power-drain calibration and display modes are continuously powered only on operator demand. In any operating mode, only those elements necessary to effect the mode are powered, either on an intermittent or continuous basis, as appropriate to realize the mode objective.

Abstract: A dry pressure gauge with a circular spring interconnecting the operational movement end of the Bourdon tube sensor and the driven mechanism that includes added mass to dampen frequencies above a desired design level. The added mass takes the form of added weight on the gauge needle in the form of a circle of material, weights on opposite sides of the needle from the pivot center, or a single mass weight on the needle below the pivot center. Circular spring to mechanism interconnect slotting is included, normally biased to an end limit by a bias spring in the driven mechanism, to allow below connecting spring force movement between the sensor and the driven motion translator to reduce friction.

Abstract: A nonlinear hydraulic pump control provides a primary control output as a mechanical actuator arm displacement either side of a neutral or "Off" position. A secondary control, also cam activated, operates in selectable offset sequence with the primary output, with the offset magnitude being selectively adjustable and effected either symmetrically about the primary control neutral position or differentially with respect thereto. The secondary control is useful in starting, stopping, or modulating accessory gear which cooperates with the pump operation, such as brake release control for a hydraulic winch to assure controlling hydraulic pressure buildup prior to brake release for both inhaul and outhaul operations where the winch cable is constantly subjected to tension loading.

Abstract: A seal assembly for tubular structures such as piling guides and the like, with a plurality of stacked diaphragm members forming enclosed chambers therebetween at the tube ends. The chambers are filled with plastic or elastomer for differential pressure sharing between the diaphragms to avoid overloading and rupture thereof.

Abstract: A shock load absorbing load cell with relatively longitudinally movable structural members interconnected by a plurality of shear load elastomeric segments, each having spaced plates bonded to opposite surfaces of an intervening flexible molded block of elastomeric material. Molded shape memory of the elastomeric material blocks resiliently urges the spaced plates back to their original position after they have been displaced in absorbing a shock load.

Abstract: A split nut structure provides the holding power of an ordinary nut on a bolt while allowing for quick release through removal of a retaining sleeve from containment alignment around the segments of the split nut. What could be in many respects like an ordinary hex nut is in three segments, with cuts in three faces of the hex nut to the center, put around a bolt in the same manner as though they were connected and retained in this state by a hexagonal sleeve, the hex inside of which snuggly fits the nut itself. The outside hexagon of the sleeve provides for a wrenching surface by which the nut may be adjusted and tightened much the same as any ordinary hex nut -- however, for quick release the sleeve is merely pulled straight up along the axis of the nut and the bolt.

Abstract: A well bottom hole fluid pressure measuring structure including external to internal pressure transducer fluid passage communicating structure with pressure balancing on engaged probe members to prevent undesired pressure lift separation of one probe section from another. A locking mandrel, landing nipple and probe structure is provided with positioning of the probe to the lock set state holding the mandrel in a locked state such that fluid pressure differential across the mandrel cannot unlock the probe from the mandrel.

Abstract: An antenna combiner 2.sup.n antenna element system with switchable variable delay line length broadband beam and null steering through 360.degree. in azimuth.

Abstract: A communications control system applicable to an existing master antenna television (MATV) system normally installed in a building, or CATV systems that use special entertainment feature inputs including movies and/or sporting events and special services on a controlled pay or non-pay basis, as desired. The system employs one-way intelligence transmission from TV set locations to a central processor receiver and opposite direction program transmission in a selective control monitored mode with minimal additional equipment requirements over those of a basic TV cable system.

Abstract: A bottle filling device which raises in-case bottles to be filled to engagement with a fill valve assembly which controls fluid communication between a fill tube inserted into each bottle and a pressurized fill tank. Cup members, which engage the bottle openings in fill position, communicate with a vacuum line, such that the combination of pressurized fill source and air-evacuated bottles realizes extremely fast filling. The fill tubes are the shafts of respective double acting fluid pressure operated cylinders of simple construction which position a port in the fill tube upper wall extremes within the fill tank confines or within pressure sealing cylinder end bushings to define respective open and closed fill-valve conditions.

Abstract: A thin film treatment of rock formation drilling bits mounting a plurality of toothed rotatably mounted cones with cones having hard surface films deposited on the outer surface by a high particulate energy level ion plating process on the cone carrier material including the cone teeth. Bearing surfaces within the cones and, in most instances, the bearing surfaces of bearing journals of the bit arm journal and bearing roller and ball components as well are given a dry lubricant thin film plating deposited by a high particulate energy level ion plating process.

Abstract: A portable live-bait pack, including a molded unitary body member and a molded unitary lid member. The body member is formed with arcuately contoured front and back walls shaped to conform to the body of a wearer. The upper extreme of the body front wall is formed with one or more outwardly stepped wall portions. Base portions of the wall steps are formed with a plurality of through-slots to provide container front wall aeration. The lid is offset-pivot mounted to the container body to minimize interference with a wearer's clothing, and formed with through-slots to facilitate top aeration.