Abstract: A Moyno type oscillator having a screw shaped rotor and stator is lowered down by means of a cable within a section of drill pile which has become stuck in a bore hole. The rotor of the oscillator is rotatably driven by means of a liquid stream at a speed such as to generate vibrational energy in the oscillator housing at a sonic frequency. The cable from which the oscillator is suspended has swivel bearings installed therein to permit the oscillator housing to rotate from the cable. The vibrational energy generated in the oscillator housing causes the housing to rotate precessionally around the inside wall of the stuck section of drill pipe to thus generate amplified lateral quadrature vibrational energy in the drill pipe to shake it loose from the bore hole.

Abstract: Each key in a set of keys has a headless shank. A slotted opening through the shank is slightly larger than the shank so that any key can be installed over the shank of the active key to act as a wrench to turn the active key. In addition, any shank can carry two blades thereon, one on each end of the shank.

Abstract: An indicator meter which may comprise a galvonometer is mounted in a casing having an indexing pointer or "bug" mounted for movement thereon relative to the pointer of an aircraft angle of attack indicator. The settable indexing pointer and the bezel of the casing are integrated with a variable resistor. A reference voltage is fed to the variable resistor such that a voltage is generated which is in accordance with the positioning of the indexing pointer. Thus, a voltage is generated in accordance with the pointer setting which represents the value of a desired angle of attack. The pointer can be set to represent a desired angle of attack with the meter indicating the measured angle of attack. Voltages representing the measured and desired value of angle of attack are compared with a difference or "error" signal is generated.

Abstract: A computer disk assembly has a power supply-wiring harness unit and a disk pack unit for housing and mounting a hard disk drive. This disk drive is suspended within its housing on a vibration isolating suspension system which utilizes a plurality of spring steel coils, this suspension system being designed to isolate the disk from external vibrations and shock. The power supply-wiring harness unit is removably connected to the disk pack unit through a fastening system which includes an elongated plate member which slides into a channel formed in the bottom of the disk pack unit and a latching fastener member which is driven by a handle and engages a mating receptacle in the disk pack unit.

Abstract: An electronic control system employing logical control for controlling a gas vapor arc globe. Power from a power source such as an AC power line or DC or AC generator is connected by a control switch to a logical control circuit which initially activates the igniter for the globe. In the event that the igniter does not cause the globe to ignite a control signal is provided to turn the power off. The voltage for operating the globe is boosted by means of a boost voltage generator to a substantially higher voltage than that of the power source. The operating voltage for the globe is generated by means of a multivibrator which runs at a relatively low frequency and a pulse width modulator which runs at a high audio frequency. The square wave output of the multivibrator (typically 60 Hz) is modulated by the pulse output of the pulse width modulator (typically 20 KHz) to provide a square wave DC to the globe modulated by high frequency rectangular pulses having a width which determines the intensity of the globe.

Abstract: An elastic bar member is coupled to an orbiting mass oscillator and the entire assembly is suspended from a cable or the like such that the bar member has freedom of lateral motion and is nakedly immersed in a slurry having particulate material contained therein such as a mineral ore reject from which metal has been extracted. The rotor of the orbiting mass oscillator is driven at a speed such as to generate cycloidal sonic energy in the bar preferably at a frequency such as to set up resonant standing wave vibration of the bar in a cycloidal quadrature pattern. The cycloidal vibrational energy tends to set the surrounding fluid material into a whirling rotation or rotary traveling wave which facilitates the agglomeration or coagulation of the particles in the material and enhances the settling operation to make for more complete separation of the particles from the liquid.

Abstract: An elastic bar member is clamped to an orbiting mass oscillator and the entire assembly is suspended from a cable or the like such that the bar member has freedom of lateral motion and is nakedly immersed in a leachant having a material contained therein such as a mineral ore from which metal is to be extracted. The rotor of the orbiting mass oscillator is driven at a speed such as to generate cycloidal sonic energy in the bar preferably at a frequency such as to set up resonant standing wave vibration of the bar in a cycloidal nutating pattern. The cycloidal vibrational energy tends to set the surrounding fluid material into a whirling rotation or rotary traveling wave which facilitates the mixing of the ore and leachant and enhances the leaching operation to make for more complete separation of the mineral from the ore.

Abstract: A cargo handling system has a main drive panel and fore and aft end panels for driving cargo in one direction or the other in the cargo compartment of a vehicle such as an aircraft. The main drive panel is driven in either direction on a plurality of toothed belts which are anchored to the system floor panels, the teeth of such belts engaging the teeth of trolley wheels which are rotatably driven by the motor. The main panel is thus driven in trolly-like fashion along the drive belts in loading cargo. Each end panel is attached to a separate endless chain drive. The chain drives are selectively attached to the main drive panel and one or the other of the end panels drawn along with the main drive panel in the unloading of cargo.

Abstract: An electrical switching mechanism has a pair of arcuate spring contact members which are mounted in a casing. An aperture is formed in the casing for receiving an actuator member which may comprise a screw or other similar actuator member. A camming member is slidably mounted in the casing with one portion thereof abutting against one of the spring contact members. The camming member is urged by the spring contact member such that it is resiliently urged towards the aperture. The spring contact members are retained in the casing by means of casing guide elements in a position such that when a screw or other member is inserted in the aperture, the camming member is urged outwardly by the screw so that it retains its associated spring contact member in a non contact position with the other spring contact member.

Abstract: A compliant foam is introduced into the bottom of a pile casing being resonantly sonically driven into the ground. The foam mixes with earthen material which has entered the interior of the casing and is presenting impedance to the sonic driving of the pile. This foam material effectively makes the earthen material more compliant and thus effectively lowers the impedance presented by such material, thereby increasing the accoustical "Q" of the resonantly vibrating pile member.

Abstract: A golf club driver or "wood" head is formed by interlocking female and male units. The female unit provides the basic shape of the head while the male unit which is inserted into the female unit to complete the club head structure includes the sole plate, face plate, and central and back weight elements. The male unit has a substantially greater weight than the female unit and forms a hammer-like impact member to provide a maximum power transfer from the head to the ball. The side walls of the central weight element of the male unit has recesses formed therein which fit around ribs formed in the female unit in interlocking engagement therewith so that when the two units are joined together by means of screws and/or cementing, a unitary structure is formed which gives the head a solid feel on impact.

Abstract: A sandal has a removable ankle strap which is anchored to the sandal at its rear portion and has a pair of side straps connected to the opposite side portions thereof. The side straps cross over each other and have one of the ends thereof fixedly attached to the toe portion of the sandal while the opposite ends thereof are looped around the ankle strap. Each of the front straps is fitted through a slot formed in an anchor member. These anchor members being fixedly attached to the sandal directly below positions on the ankle strap over which the front straps are looped. Thus, the front straps can be adjusted individually to tighten or loosen their engagement with the wearer's foot by pulling such strap in one direction or the other through the anchor members.

Abstract: A portable reflector antenna assembly which is readily assemblable and disassemblable for use in the field has a triangular base frame employing three beam members which are joined together at their ends with hinge type knuckles which are slidably positioned on three legs. The legs have integral cup shaped pads near the bottom ends thereof and are driven into the ground until the cups abut against the ground to provide lateral and vertical support in the soil. The frame can be adjusted on the legs for both height and leveling by virtue of the slidable movement of each of the knuckles along the legs, and when in the desired position are clamped to the legs by means of lever-cam actuated draw bolts. The reflector member of the antenna is supported along its rim by means of pivotal supports and clamps, the bottom edge of the antenna being slidably adjustable in azimuth along the curved front beam member of the frame and clamped to the front beam member by means of clamping members.

Abstract: An improved wind shear warning system for aircraft. A wind shear signal representing wind shear as modified by the downdraft drift angle of the aircraft is used to provide a warning signal when the wind shear signal exceeds (negatively) a variable threshold. The threshold for the warning signal is modified in response to the pilot controlled excess of the airspeed of the aircraft over a reference airspeed during the approach to a landing so as to avoid unnecessary warnings. The threshold is further altered when the wind shear signal during approach indicates the high likelihood of a reversal of wind shear conditions.

Abstract: A monopulse antenna feed system utilizing multiple modes within the feed. In one embodiment a TEM mode and one or two TE.phi..sub.11 modes are utilized in the antenna feed system to provide a data and a reference signal responsive to the one or two TE .sub.11 modes and to provide an error indicating signal responsive to the TEM mode that provides monopulse tracking operation. The relative phase of the TEM mode and the one or two TE .sub.11 modes is indicative of the off-axis orientation of a far-field source relative to the axis of the antenna system. The relative amplitude of the TEM mode is indicative of the angular departure the source from the axis.

Abstract: A sonic boring tool which employs sonic energy in implementing its boring action is lowered down a well to a region thereof where the flow of effluent is restricted by clogging and contamination. A curved bend is provided in the string above the tool such that the tool is oriented for drilling into the formation laterally from the well. The drill string employed is flexible so that it can follow the curved path of the tool. The tool may comprise a drill bit, sonically driven by means of an orbiting mass oscillator coupled to the drill string or may comprise a hydraulic drilling tool in which hydraulic pulsating jets are generated in response to sonic energy developed in an orbiting mass oscillator and coupled to the tool through a resonantly driven drill string. In one embodiment a rotary table is provided to enable the rotation of the tool in one direction or the other or alternatively in opposite directions to obtain a variety of drilling patterns.

Abstract: A well casing of an elastic metal material is placed in concentric relationship with a casing of an inert material such as a suitable plastic. A penetrating cap piece is placed on the bottom end of the metallic casing. The two concentric casings are then driven into the earth in an area to be monitored for contamination, such driving action being achieved by a sonic oscillator which is attached to the top end of the metallic casing. Preferably, the sonic energy is provided at a frequency such as to effect resonant standing wave vibration of the metallic casing. Further, water may be injected down the casing so as to lubricate the earthen structure immediately below the cap to accelerate the penetration of the casing. When the casings have been driven to the desired depth, the metallic casing is withdrawn by lifting up thereon while continuing to apply sonic energy, leaving the casing of inert material in place such that earth samples can be periodically withdrawn from the well thus formed.