Abstract: An improvement in a method of treating seismic data in which predictive noise, as measured along one of the axes is discriminated and subtracted from the total signal along another of the axes recorded by geophone recording the reflection from subterranean strata of energy input from a source at the surface.

Abstract: There is disclosed a method for detecting corrosion on the walls of conductive containers wherein a transmitting antenna induces a current into a portion of the container wall and the decay of the induced current is detected by a receiving antenna, with a record of the decay of the induced current being created. The record is interpreted to determine the thickness of the container wall portion and the presence or absence of corrosion is inferred. One method of interpretation uses reference records from container walls having known parameters for comparison. Another method of interpretation examines the times that the induced current reaches the container wall portion surface that is farthest from the antennas.

Abstract: The invention pertains to a method and apparatus for generating and radiating electromagnetic energy for use in heating the upper atmosphere. For such an application, the cost per watt is a dominant design factor. The invention minimizes the cost per watt by minimizing the number of active devices utilized. A single active device is used to charge and discharge a short circuited antenna at a rate which is essentially the same as the antenna's resonant frequency.

Abstract: There is disclosed a method for detecting corrosion on the walls of conductive containers wherein a transmitting antenna induces a current into a portion of the container wall and the decay of the induced current is detected by a receiving antenna, with a record of the decay of the induced current being created. The record is interpreted to determine the thickness of the container wall portion and the presence or absence of corrosion is inferred. The effects of variations in distance between the transmitting antenna and the receiving antenna and the pipe wall at one location on the pipe and between the transmitting antenna and the receiving antenna and the pipe wall at another location on the record of the decay are corrected for by examining the rate of decay of the induced current.

Abstract: There is disclosed a method for directly detecting corrosion on the walls of conductive containers wherein a transmitting antenna induces a current into a portion of the container wall and the decay of the induced current is detected by a receiving antenna, with a record of the decay of the induced current being created. The record is interpreted to determine the presence or absence of a corrosion component, with the corrosion component being caused by the presence of corrosion products having superparamagnetic properties.

Abstract: A method for reducing noise in electromagnetic geophysical exploration data simultaneously measures three orthogonal components of the ambient noise to produce noise records and simultaneously measures three orthogonal components of the decay of current induced into the earth to produce response records. In measuring the records, the receiving antenna is positioned near the electromagnetic center of the transmitting antenna, whereby the maximum component of the induced current decay signal is vertical or perpendicular to the strata in the earth. The impulse response of the earth is determined from the noise records. The noise portion of the vertical response record is determined from the impulse response and the non-vertical response records, whereby the noise portion is removed from the vertical response record.

Abstract: A temperature control system for an air conditioning system that services plural zones provides priority of one or more selected zones of the conditioned air flow relative to the other unselected zones. Priority is achieved by closing those dampers associated with the unselected zones to direct the conditioned air flow into the selected zones. The temperature control system also provides for fail-safe operation by utilizing dampers biased in the open position and by preventing all dampers from being closed at the same time when conditioned air is flowing.

Abstract: A device which allows hanking characterized by improved apparatus in a boat with a conventional mast, a plurality of lines and accessories, roller furling jib headsail, comprising a large diameter ring disposed about the furling jib system and furled said headsail wiht rollers that allow said ring to move vertically along said furling jib system and headsail without damage to said headsail for most efficiently controlling a cruising spinnaker sail in a vertical plane. Also disclosed are details of the rings and rollers thereon.

Abstract: An improvement in a sealing combination between a head of a hydraulic cylinder and a plastic covered cable traversing therethrough, including the plastic covered cable connected with a piston interiorly of the cylinder so as to be moved longitudinally responsive to hydraulic pressure applied to the piston traversing interiorly of the cylinder, a gland disposed about and sealingly encompassing the plastic covered cable, a head defining an annular packing box about the plastic covered cable and adapted to receive the gland for holding a seal in place and a wiper ring disposed in the gland and about the plastic covered cable for wiping dirt and the like therefrom before the cable enters the sealing combination; characterized by a split ring of resilient material emplaced in the bottom of the packing box and encompassing the plastic covered cable without sealing engagement therewith; a split backup compression ring of thermoplastic material disposed in the packing box so as to be responsive to the compressive for

Abstract: There is disclosed improved pop-up drain assemblies for lavatory basins, with unique structure involving the removable inner seat and compression nut receiver portion, the removable inner seat member for the rod bearing part, and the drain conduit portion.

Abstract: The invention provides methods of communication between two locations along a cable where the only metallic conductor available is grounded at numerous points along its length, which methods utilize a "distributed earth referenced carrier system" and wherein a first transceiver is electrically coupled to the metallic conductor at a first location and a second transceiver is electrically coupled to the metallic conductor at a second location.

Abstract: A rigid frame off-highway vehicle in which there are a plurality of wheels on each side, each wheel of each of the plurality of wheels being lockedly connected to the other wheels and commonly connected to a torque delivery source such that the wheels rotate in unison; the wheels being steerable and connected with steering means to operate in a selected steering mode.

Abstract: A swabbing apparatus has a plurality of swab cups molded on a single core, with at least two swab cups having a different fluid load carrying capacity, so that the swabbing apparatus will have a relatively broad fluid load carrying capacity. Each swab cup has one or more lips with the fluid load carrying capacity of a swab cup being determined primarily by lip thickness.

Abstract: An improved faucet valve utilizes a static diagonal sealing ring which coacts with a control member cylindrical flow control portion having a tapered lower end portion in a relationship that provides: substantially 180 degrees of control member rotation from full open to full close and vice versa, with metering of fluid flow taking place over a major portion of the control member rotational range; contact of nearly all of the sealing ring inner periphery with the control member flow control portion during initial opening and final closing stages when differential pressure is high, so there is no tendency for the sealing ring to be forced out of its grooves; the diagonal sealing ring does not move past a fluid discharge opening or vice versa, so the diagonal sealing ring is not subjected to chafing which would result in excessive wear.

Abstract: A learning device, including an induced gravitational force accelerator and decelerator exerciser with adjustable seats for stressing the cells of the body characterized by support for supporting the body and a reciprocally movable apparatus connected with the support for moving the support and the body reciprocally vertically to effect an accelerational and gravitational force stress on the cell above the effect of 1 G, and educational message apparatus for introducing a learning message, either audibly or visibly, or both to the person whose body is being stressed, the video being susceptible to being turned on to flash the message when the gravitational force exceeds 1.0 G on the body cells such that learning occurs at an increased rate and with increased retention.

Abstract: In an aerial lift having a lower boom, an upper boom, and a personnel carrier bucket attached to the upper boom, with the upper boom having an overcenter capability, wherein the upper boom can pivot from a folded position in a non-overcenter zone of operation past a center position and into an overcenter zone of operation, there is provided a control handle arrangement with first and second handles having control movements such that, when the operator is correctly positioned, the direction the bucket moves corresponds to the direction the respective handle moves for all zones of operation.

Abstract: There is disclosed a steering control system for a boat propelled by either bow mounted or transom mounted trolling motors. The steering control system includes a steering cam assembly, actuating device for imparting relative rotational movement between the steering cam and the steering cam housing, and steering device for turning the trolling motors in a manner responsive to the actuation of the switching device. The steering cam assembly has a steering cam with actuating surfaces that form varying contours, a steering cam housing that houses the steering cam such that the steering cam rotates relative to the steering cam housing, electrical switching device coupled to the steering cam housing with actuation portions responsive to the actuating surfaces. Several different embodiments of the steering device are provided that either swing the trolling motors in an arc or rotate the trolling motors.

Abstract: The invention pertains to an improved annular shaped charge of a type to be used in the shaped charge carrier of pipe cutting or severing apparatus. The improved annular shaped charge is made up of eight or more shaped charge segments disposed in side to side abutting relation. Each shaped charge segment has a die formed metal band and charge load. The invention also pertains to methods of making said annular shaped charge and the shaped charge segments, which methods are described.

Abstract: The invention is directed to a trash seeder having a seeding tyne and a following press wheel. A hydraulic cylinder applies pressure to both the seeding tyne and the press wheel. The press wheel is pivoted to the frame by a trailing arm and the tyne is pivoted to the trailing arm, the hydraulic cylinder acting on the tyne. Thus the single hydraulic cylinder applies pressure to both tyne and wheel, while allowing the tyne to move upwardly over obstructions without effecting operation of the press wheel.

Abstract: A holder for a container for drinks and the like characterized by an arcuate first end adapted to fit the inter-crural region and terminating in a second squared-off end; having a sloping bottom and; being adapted to sit between the legs of a person in the seat of a car for facilitating setting a drink container into a holder and retrieving the drink container from the holder for drinking safely even if the person is driving the vehicle. The holder has a receptacle and is formed of an insulating material. Preferably, the receptacle has an upper portion that is larger in diameter than a bottom portion and both portions are substantially cylindrical such that either an inverted frusto-conical drink container, a drink can or a drink can with an insulating sleeve around it can be set into the receptacle.