Abstract: An apparatus for measuring unbalance on a rotary member such as a motor vehicle wheel comprises a drive motor for driving a main shaft carrying the rotary member, by way of a reduction transmission means having a self-locking action so that the main shaft can be braked by the self-locking action after an unbalance measuring run. The self-locking action of the reduction transmission means also serves to resist a rotary moment applied to the main shaft when tightening or loosening a clamping arrangement with which the rotary member is clamped on the main shaft, so that the main shaft remains in a stationary position during that operation.

Abstract: A fluid injection method of nondestructive testing for bonding between two layers of material, at least one of which is penetrable is presented. One or two fluid injection members are inserted at selected locations along the penetrable material to the bond line between the materials. In the single injection member test, a fluid under known pressure is injected through the injection member to the bond line. The flow is measured at several locations and an average flow rate under satisfactory bonding conditions is noted. Any flow rates in excess of some fixed amount above this established norm is considered unsatisfactory. In the two injection member test. The two members are adjacently inserted through the material to the bond line and a fluid under known pressure is injected from one injection member to the bond line. If a disbond exists between the two members, the second member receives fluid from the first at the bond line.

Abstract: A magnetic field sensor for an acceleration sensor including a cantilever beam having a free end to which a permanent magnet is attached. A pair of the magnetic sensors, each consisting of a barber-pole type magnetoresistive sensing element, are arranged opposite to and symmetrically. The cantilever is bent and the magnet is moved according to an acceleration, which is detected as outputs from the magnetoresistive sensing elements.

Abstract: An air pocket removal device is provided for the removal of residual air trapped in an underground fuel storage tank so that an accurate measurement can be made of the tank tightness and hence detect the presence of any leaks. The device is comprised of a guide column which can be fitted through the tank fuel inlet opening and which has an extendable hose fitted with a float which locates air pockets anywhere on the inner top surface of the tank. Any air present in the fuel storage can be withdrawn through the hose to the exterior.

Abstract: The process for measuring the coefficients of adhesion and friction of a drilling fluid involves, following the standardized filtration of the drilling fluid or mud from which a solid phase "filtration cake" and a liquid phase or filtrate collected on the downstream side of a filter 15 are obtained, placing a metal piston skirt 29 in contact with a filtration cake in the presence of a contact pressure, and measuring the moments of adhesion and friction when the skirt is driven in axial rotation perpendicular to the contact surface, and the axial extraction or contact adhesion force when the skirt is withdrawn after a determinate period of contact.

Abstract: An exhalation air analysis device, in particular for alcohol analysis including a flow duct coming from the tested person to a testing housing having a movable duct element with a recess. The duct element can be adjusted in two different settings in the housing. In the first position the recess is connected to an inlet and outlet of the exhalation air line, so that the recess forms a part of the flow duct of the exhalation air. In a second position of the duct element, its recess is cut off from the flow duct and connected to a detector. The volume of the recess forms a part of the analysis chamber required for the analysis.

Abstract: The acceleration pick-up device is provided with an elastic member to which an inert body is attached. Upon occurrence of an accelerative force, the elastic member is deformed. For measuring the absolute value of the acceleration, a calibration can be performed. In this calibration process, a measuring value of the acceleration is obtained on the basis of the deflection of the inert body. Subsequently, the inert body is loaded with a foreign medium so that its mass is changed, and then a further measuring value is obtained. In further measurement processes, the absolute acceleration value can be calculated from the differences of the masses and the measuring values.

Abstract: An apparatus and method for detecting fluid leaks from aboveground fluid storage tanks is disclosed. The invention consists of radially disposing a plurality sample probes in the subsurface soil area underneath the aboveground tank. Each of the plurality of sample probes are connected to a vacuum pump and a sampling port to collect the soil gasses drawn from the subsurface soil area. At least one air injection probe is disposed in the subsurface soil area and extends underneath the aboveground tank to an approximate center point of the tank circumference. The volatile liquid phase tracer is mixed with the fluid in the tank, and soil gas samples are evacuated through the subsurface soil area underneath the tank into the sample probes, collected and analyzed for the presence of the gas phase tracer.

Abstract: The irreducible water saturation profile across the length of a core sample of coal is determined from four series of X-ray attenuation measurements made over the length of the core sample. The X-ray attenuation measurements are made while the core sample is at a pressure simulating a formation overburden pressure. The first series of X-ray attenuation measurements are made while the core sample is saturated with distilled water or formation brine. The distilled water or formation brine is then displaced with humidified, inert, substantially nonadsorbing gas and a second series of X-ray attenuation measurements are made. The core sample is then saturated with an aqueous sodium iodide solution and a third series of X-ray attenuation measurements are made. The aqueous sodium iodide solution is then displaced with a humidified, inert, substantially nonadsorbing gas and a fourth series of X-ray attenuation measurements are made.

Abstract: The acceleration sensor has an elastic member (11) to which an inertial body (12) is attached. Upon the occurrence of an acceleration force, the elastic member (11) is deformed. In order to measure the absolute value of the acceleration, a calibration may be performed. In such calibration, a measuring value of the acceleration is obtained from the excursion of the inertial body (12) at a given density of the medium surrounding the inertial body. Subsequently, a second measuring of the same acceleration is taken at a varied density of the gas surrounding the inertial body, thereby obtaining a second measuring value. In further measurements, the absolute value of the acceleration may be calculated from the differences between the gas densities and the measured values.

Abstract: A round open end container is supported and held on a turntable by a chuck. The edge of the container is guided and supported by rollers on roller heads mounted on brackets of stanchions positioned on opposite sides of the container. The brackets are movable vertically on the stanchions and the stanchions are movable radially relative to the turntable for positioning the rollers in supporting engagement with the edge of the container. A robot arm carries a C-shaped frame with opposing arms movable over the edge of the container between the rollers. Non-contact sensors are mounted on the arms of the C-shaped frame and are movable with the arms to predetermined vertical positions on opposite sides of the container wall for measuring the thickness of the wall at predetermined positions provided by rotation of the turntable.

Abstract: A method and apparatus for balancing rotatable members whereby a member to be balanced is rotated first in one direction about an axis at a selected speed and then is rotated in the opposite direction about the same axis and at the same speed. A sensor determines the circumferential apparent location of greatest imbalance or runout of the member in each of the directions of rotation, following which any imbalance of the rotatable member is compensated for by adding or removing weight to or from such member at a circumferential zone which is equidistant between the apparent locations of greatest imbalance.

Abstract: A method is disclosed for determining a component of the response of a reservoir to tidal forces (such as the amplitude of variation or delay time) in a hydrocarbons reservoir. That method comprises measuring a variable responsive to tidal forces within the reservoir over a measurement time period, determining a theoretical earth-tide for the reservoir over that measurement time period, and determining the component of the response to tidal forces by comparing the variable measurements and the theoretical earth-tide determinations. Examples of variables that are responsive to the tidal forces are fluid level in a borehole, pressure, and borehole stress. The measurement time period should be sufficiently long so that both a maximum and minimum variable measurement is achieved during that time period (e.g., fourteen or twenty-four hours).

Abstract: An electronic motor control system is taught herein which utilizes a speedometer testing circuit. The (electronic) speedometer/odometer of a vehicle is tested, with the testing device being interconnected with the (input) terminals of the speedometer, exclusive of whether the speedometer is installed or removed from the vehicle. The testing device is utilized without vehicle input to the speedometer in order to determine whether the speedometer can produce an expected signal upon testing thus determining whether the speedometer is functional or not. The testing circuit has a self-contained power supply, is compact in size, and lightweight, thereby insuring complete mobility of the testing unit and dual application of the circuit to both installed and disengaged speedometer and odometer mechanisms.

Abstract: A sump riser apparatus for a pipeline system includes a hollow sump base including a upstanding annular portion disposed on an upward surface thereof in surrounding relation to an opening formed in that surface. A hollow detachable riser extension is mounted on the sump base and is of a size and shape, relative to the sump base, such that, when the riser extension is inverted, the riser extension can be received within the sump base for storage therein during transportation of the parts. The riser extension includes a cover and an annular step portion at the base thereof which fits over and around the upstanding annular portion of the sump base. The step portion is of a size and shape relative to the cover so as to enable receipt of the cover therein when the riser extension is inverted.

Abstract: A nonintrusive method for determining the magnitudes and spatial and temporal origins of individual dynamic (time varying) torsion loads acting in superposition on a rotating shaft or system of shafts includes combining the measurements of said shaft's inertial response to the dynamic torsion loads with the measurements of discrete relative angular displacement parameters at causally connected space-time points. Changes in the shaft's characteristics, such as those due to change in its temperature or degradation of its structural integrity, can be monitored to provide updated torque determinations that maintain accuracy by taking these changes into account and to provide information on the onset and location of shaft fractures. Apparatus based on the method of this invention is self calibrating.

Abstract: A damping arrangement for a deflectable beam accelerometer where the deflectable end of the beam is spaced from a stationary member. A drop of self contained viscous material extends between the deflectable end and the stationary member to dampen movement of the deflectable end.

Abstract: A method for inspecting a sealing property of a plastic container having contents. The container has a lid which is deflectable under a negative pressure developed in the container. The contents are charged in to the container so that a negative pressure is developed under a normal temperature or room temperature. The deflection of the lid is measured so as to detect the sealing property of the container.

Abstract: A submersible sensor for use in monitoring the physical properties of well water or other fluids. The sensor includes a thin walled cylindrical body having a pair of opposing entrances, each of which has been machined to form a stepped counterbore. The sensor also includes a seal cone adapted to be inserted in either entrance and a seal disposed between the seal cone and the inner step of the counterbore.

Abstract: A mounting stand in a balancing machine mounting assembly includes a stationary mounting block and a mount for a rotary member to be balanced. The mount is supported on the mounting block by two parallel springs capable of oscillating movement in a mounting plane in the measurement direction. The mounting stand further has at least one measurement value pick-up sensor operatively disposed between the mounting block and the oscillatable mount for detecting oscillation of the mount produced by an out-of-balance rotary member and to supply corresponding measurement signals. A rotatable adjusting unbalance weight of a known magnitude is mounted to the oscillatable mount and can be selectively brought into operation to cause oscillatory movement of the oscillatable system, to perform a calibration.