摘要:
An electronic descaling system to prevent or remove mineral deposits by exposing moving fluids to magnetic and electric fields includes an improved power supply. In particular, the power supply adapts to the varying length, diameter and impedance of attached coil and cable combinations, and still provides the proper current and power levels to effectuate electronic descaling. A constant current D.C. power supply having a regulated D.C. current output level is provided. The substantially constant D.C. current output is then switched in a switching circuit responsive to a switching control signal to provide a bi-directional current through the coil in one direction and then switched to conduct current through the coil in the other direction. The switching frequency of the switching control signal is time variable or constant. The present improved current driver adapts for such varying frequencies while providing a substantially constant D.C. current output level as the frequency of switching control signal varies. The descaling coil provides the proper induced electric and magnetic fields, and the resulting induced electromotive force, for different switching frequencies and for cables with varying lengths and coils with varying diameters.
摘要:
A control system for a chiropractic adjustment instrument comprising a microprocessor programmable to control various parameters of an adjustor head to be driven against the spinal vertebrate of a patient. A solenoid is associated with the adjustor head which is energized by a capacitor. The capacitor is charged by a charging circuit to the programmed voltage level. The pressure of the adjustor head against the patient is sensed and when the pressure reaches a predetermined level, the capacitor is discharged to the solenoid to drive the adjustor head against the spinal vertebrate of the patient.
摘要:
A method and apparatus allows for simple correction of restricted spinal motion. The clinician applies a uniform low-energy diagnostic impulse to each vertebral segment of interest and the resulting force waveform is recorded. The force waveforms of each diagnostic impulse are compared to determine the relative compliance of each vertebral segment. The clinician then selects the vertebral segment to be adjusted on the basis of identification of fixated or hypo-mobile segments and high compliance or hyper-mobile segments. Adjusting thrusts are applied in the region of the hypo-mobile segments. The last step may or may not include a comparison of the post-adjustment compliance of the spinal system under analysis with the compliance before adjustments were performed on the spine.
摘要:
A heated chamber having at least one opening; closure means for closing said at least one opening, said closure means having at least a closed and open position; said closure means and said opening having surfaces disposed for coming into proximity of one another in said closed position, said surfaces forming a primary sealing means for said heated chamber in said closed position, there being a substance applied to at least one of said proximate surfaces, said substance having a property of expanding upon the application of heat thereby forming a secondary sealing means between said proximate surfaces in said closed position.
摘要:
Methods and compositions are provided for increasing packed bulk density of coal, whose surface moisture varies from 2 to 15 weight percent, to desired levels in the range of 45 to 50 lbs./cu.ft., and for controlling and maintaining the improved bulk density. The method involves treating the coal with dilute water solutions (0.01 to 1.0 weight percent of solids) of water soluble, nontoxic polymers, belonging to the classes of polyethylene oxides and polyacrylamides, in amounts between 0.5 gram and 120 grams of polymer solids per metric ton of coal.
摘要:
An apparatus for cleaning and sealing the peripheral knife edge of a coke oven door has a vertical mast which is positioned adjacent one edge of a door suitably supported in vertical position on a door rack. A treatment carriage in the form a horizontal arm is mounted for vertical reciprocation along the mast. Spray heads are mounted on an endless conveyor chain looped around turning point sprockets at opposite ends of the treatment carriage. The diameter of the turning point sprockets and the distance therebetween are related to the curvature of the corners of the door and the width of the door so that as the drive chain traverses the upper part of its endless run the spray heads can spray a path corresponding to the profile of the top edge of the door and the curved corners at opposite ends thereof. Correspondingly, when the chain proceeds along the lower part of its run, the spray heads can transverse a path corresponding to the profile of the lower edge of the door and the curved corners at its opposite ends. A reciprocal drive is provided for moving the treatment carriage up and down along the mast. When the treatment carriage moves up the mast an inner edge of the door is treated and when the carriage moves down the mast an outer edge of the door is treated. Controls are provided for effecting either a cleaning cycle, a sealing cycle or a cleaning cycle followed by a sealing cycle.
摘要:
A chiropractic adjustor for applying an adjustment energy to a patient through a plunger having a resilient or cushioned head with the energy applied to the plunger being supplied by a solenoid assembly capable of producing an adjustable and reproducible energy or force that is transferred from the solenoid to the cushioned plunger thereby providing a chiropractic adjustor that is solenoid operated and capable of providing precisely reproducible energy settings over a wide range and the capability of providing a reproducible energy level and a reproducible contact energy or force between the adjustor and patient.
摘要:
A dilator, a method of making the dilator, and a method of using the dilator to compress fatty substances deposited in or on the walls and lumen of the major arteries. The dilator includes a tubular member that has a distal end portion that can be expanded to compress the fatty substances. One embodiment of the dilator has a balloon or inelastic sack formed integrally with side walls of the tubular member and spaced from its distal end. A second embodiment of the dilator utilizes a tubular member formed by first and second spring wire guides encompassing a plurality of dilating wires surrounding a center pull wire. Near the distal end of the dilator, the spring wire guides are spaced from each other to define a buckling region for the dilating wires. When the center wire is pulled, a compressive force is applied on the dilating wires, so that the wires buckle, or expand, in the buckling region. In one modification of this embodiment, a thin elastic membrane encompasses the dilating wires and the buckling region. In another modification, the thin elastic membrane covers substantially the entire length of the dilating wires so that both pneumatic and mechanical compressive forces can be exerted on the fatty substances. The elastic membrane is positioned inside or on the outside of the spring wire guides. A further embodiment of the dilator utilizes a tubular member having a distal end split by longitudinally-extending slits. Rearward movement of a ball member positioned in front of the leading or distal end of the tubular member, after or simultaneously with rearward movement of a sheath encompassing the split end, forces apart the split end thereby dilating the artery and exerting a compressive force on the fatty substances.