Abstract:
Multiple sensors on a drill string can be utilized to perform equivalent circulation density (ECD) analysis. By utilizing multiple ones of the sensors, the pressure drop in each section of the wellbore can be classified. Additionally, the inclusion of multiple sensors in the drill string allows a wellbore to be sectioned into intervals bounded by any two sensors. Pressure events occurring in a single section of the wellbore bounded by any two sensors can be isolated and analyzed. The isolation can be achieved by subtracting the pressure measured on the shallower sensor from that measured on the deeper sensor.
Abstract:
A frequency and/or phase locked loop architecture that eliminates the loop filter generally required in conventional phase locked loops, and which may be implemented in digital logic, for example, as a field programmable gate array. In one example, a frequency/phase locked loop includes both a frequency comparison component and a phase comparison component to allow locking of an output clock signal to both the frequency and phase of a reference signal.
Abstract:
A golf putting practice aid has a rectangular base frame that serves as a stroke window for shot set-up and aiming purposes. A side frame is movably mounted on the base frame for pivotal movement from a folded, minimum profile storage configuration to an upright operative putting position. The side frame includes an elongated guide bar disposed in parallel alignment with the longitudinal axis of the stroke window for engaging and guiding pendulum movement of a putter shaft during execution of a putting stroke. The slope angle of the side frame relative to the base frame, and thus the elevation of the guide bar, is manually adjustable to suit the golfer's personal swing preference and putter selection. The guide bar and one of the base rails are marked with colored bands for indicating back swing stroke range and follow-through stroke range.
Abstract:
Bristle stiffness is varied by allowing a support beam that carries the bristles to undergo torsional movement in response to brushing action. Torsional movement is achieved by allowing the support beam to be disconnected to the brush head along at least portions of the length of the support beam. In particularly preferred embodiments, brushes employing the varying stiffness techniques are made with bristle sub-assemblies that have at least one row of bristles connected to a base string or similar structure that functions as a support beam. The base string can be connected across an opening in the brush, and is thus connected at its opposite ends, or it can be connected at any number of spaced intervals, the number and length of spacing being selected to achieve a desired degree of stiffness.
Abstract:
An equipment label comprising an identity plate bearing information markings and an electronic tag having electrical contacts. The identity plate is provided with means for attachment to an item of equipment and is adapted to mount the electronic tag such that in use the label can be attached to the item of equipment with the identity plate's markings exposed to be read and the electrical contacts accessible for communication with the tag.
Abstract:
An apparatus for forming bristle sub-assemblies includes a vertically oriented slot, which is formed by two endless belts. A wheel disposed above the slot pushes a bristle string into the slot. The bristle string has a plurality of bristles connected to a base string in two rows. The bristle rows can be horizontally oriented, so that all of the bristles are co-planar in a horizontal plane, or they can be angularly oriented with the base string at the vertex of the angle. When the bristles are pushed into the slot, they bend to adopt a new, substantially parallel orientation. An ultrasonic heater heats the bent bristles to re-set the thermoplastic material from which the bristles are made so that after cooling, the parallel orientation is maintained.
Abstract:
Methods and apparatuses for making elongated articles are disclosed. One method includes feeding at least one base string along an axis, wrapping at least one monofilament around the axis to produce a number of monofilament wraps per length of base string which are transported by the base string, bonding the wraps to the base string with ultrasonic energy, and cutting the wraps at a point downstream of where the wraps are bonded to the base string. The result is an article having two rows of monofilament segments connected to the base string.
Abstract:
A component of the hydrocarbon well system and a first supply line to the component can be isolated from other components of the hydrocarbon well system. The component and the first supply line can be pressurized to a test pressure with a test fluid. Then, a pressure and a temperature of the test fluid in the component that was pressurized can be measured over a period of time. The pressure and the temperature that were measured can be analyzed and a pressure integrity of the component can be determined based on the analysis.
Abstract:
An LED package having a generally tubular electrically conductive body, a circuit board which is mounted across the body at or adjacent one end thereof and which has an outer face on which an LED is mounted, an end contact exposed at the end of the body remote from the circuit board and located relative to the body by means of an insulating cap mounted across the body. An electrical conductor extends from the end contact through the cap, through the interior of the body and through the circuit board to connect the end contact to one of the anode and the cathode of the LED. An electrically conductive path is formed on the circuit board to connect the other of the anode and the cathode of the LED to the body such that the body serves as a second contact enabling current to be supplied to the LED.
Abstract:
Several brush assemblies are disclosed. All employ bristle strings that include a base string connected to a plurality of monofilaments. The preferred monofilaments are nylons and other polymeric thermoplastic materials. The monofilaments may be linear segments or loop segments disposed in two rows. The bristle strings may be connected to brush bodies to form virtually any of the various types of brushes. Bristle strings employing loops may be braided together to form entangled, monofilament articles for brush or other applications.