31results about How to "Harsh environment" patented technology

A cross-component superconducting gravity gradiometer sensitive to off-diagonal components of the gradient tensor includes, for each gradient axis, a pair of closely matched angular accelerometers coupled by superconducting circuitry, including sensing circuits designed to minimize the sensitivity of the instrument to angular acceleration of the platform at which the angular accelerometers are mounted; and a mode-splitting circuitry designed to reduce a nonlinear coupling of angular acceleration to the output of the gravity gradiometer and to attain the operability of the instrument in a broader range in the frequency domain.

A cross-component superconducting gravity gradiometer sensitive to off-diagonal components of the gradient tensor includes, for each gradient axis, a pair of closely matched angular accelerometers coupled by superconducting circuitry, including sensing circuits designed to minimize the sensitivity of the instrument to angular acceleration of the platform at which the angular accelerometers are mounted; and a mode-splitting circuitry designed to reduce a nonlinear coupling of angular acceleration to the output of the gravity gradiometer and to attain the operability of the instrument in a broader range in the frequency domain.

An electronic digital controller, such as a load cell indicator, is disclosed in which a number of components, such as a circuit board, display, and keypad are placed within an enclosure, and the enclosure is bonded closed, such as using an adhesive, to render the enclosure watertight. The keypad is a touch sensitive, capacitive keypad with no moving parts, and it is housed behind a rigid panel. An optoelectronic transceiver allows for data exchange with an electronic memory device housed in the adhesively sealed enclosure and allows for data exchange and for updating or modification of software code housed therein. Other components, such as another circuit board, a power supply, and block connectors, are placed in an adjacent enclosure, and the circuit boards in the two enclosures are electrically connected. The power supply is preferably a potted AC power supply but may also include a battery.

In a power drive unit having power modules (three-phase inverter circuits) connected to a control circuit board, bus bars extending from the power modules and a current sensor each installed near the bus bars and including a sensing element that detects currents outputted from the bus bars, there are provided a sensor board on which the sensing element is mounted, and lead pins each connecting the sensor board to the control circuit board and having a bowed shape whose one end is connected to the sensor board and other end once extends away from the circuit board and then turns back toward the circuit board. With this, the circuit board and current sensors can be connected through the lead pins without increasing the distance therebetween and stress produced in the lead pins can be alleviated, thereby enabling the unit to be minimized in size and utilized in a harsh service environment.

The present invention generally relates to dietary supplement and pharmaceutical formulations comprising layered acid protective oral dosage formulations comprising probiotics and provided as single unified or cohesive dosage form units. Each individual acid protective layer of the cohesive dosage form provides one of a different probiotic payload, a different release profile to target delivery of probiotic to a particular region in the gastrointestinal tract, or both different probiotic payloads and release pro files to target delivery of different probiotics to particular regions in the gastrointestinal tract.

A fiber optic sensor including a fiber having a modified surface integral with the fiber wherein the modified surface includes an open pore network with optical agents dispersed within the open pores of the open pore network. Methods for preparing the fiber optic sensor are also provided. The fiber optic sensors can withstand high temperatures and harsh environments.

Elastodynamic waves are generated by a tool having a hammer rotatably connected with a housing by a first hinge and an actuator arm rotatably connected with the hammer by a second hinge. An axial force applied to the actuator arm by a drive shaft and spring is translated and amplified to a radial impact force by rotation of the hammer around the first hinge. The tool may also include a stabilizer arm connected to the actuator arm by a third hinge, and connected to the housing by a fourth hinge. The housing may be an acoustic wireline tool cylinder having an opening that permits the hammer mass to extend outside the housing when rotated in a first direction. The housing may also include a second opening that permits the hammer mass to extend outside the housing when rotated in a second direction, and a third opening that permits the hammer mass to extend outside the housing when rotated between the first and second openings.

An optical sensor for pressure measurements comprises a sensor head including: a diaphragm having a first surface in contact with a fluid of which the pressure has to be measured and a second surface opposite to the first surface, a body with a tubular cavity, means arranged inside the tubular cavity, associated with the second surface of the diaphragm and movable longitudinally inside said tubular cavity in response to deformation of the diaphragm, said means including a reflective surface, an end part of waveguide means arranged inside the tubular cavity and having the end surface faced to and not in contact with the reflective surface of said means, said waveguide means being connected to a light source and a receiver respectively to send to said means the light beam deriving from the light source and to collect at the receiver the light beam reflected from the reflective surface.

A device for wirelessly monitoring well conditions includes a power including a first material attached to edges of at least one lever suspended about a central fulcrum, wherein the edges of the at least one lever are free to move about the central fulcrum, a frictionless movable object disposed inside the body of the at least one lever, wherein the frictionless movable object is free to move within the body of the at least one lever, and a second material that is fixed in position relative to the first material, wherein the first material and second material are of opposite polarities.

A ductile alloy is provided comprising molybdenum, chromium and aluminum, wherein the alloy has a ductile to brittle transition temperature of about 300 C after radiation exposure. The invention also provides a method for producing a ductile alloy, the method comprising purifying a base metal defining a lattice; and combining the base metal with chromium and aluminum, whereas the weight percent of chromium is sufficient to provide solute sites within the lattice for point defect annihilation.

The invention discloses a clamping and pressing type ball valve having an integral structure in the technical field of valves, comprising: a valve body, a socket being arranged at one end, and a valveend clamping and pressing pipe being fixedly arranged at the other end, the valve end clamping and pressing pipe and the valve body being of an integral structure, and an outer convex groove being arranged on the valve end clamping and pressing pipe; and a clamping and pressing pipe fitting, one end being a connecting plug, and the other end being a pipeline port, the clamping and pressing pipe fitting being also provided with an outer convex groove, the connecting plug being inserted into the socket, and the connecting plug and the socket are hermetically fixed by means of full-welding. A clamping and pressing sealing ring is provided in each outer convex groove; the operation can be more convenient; the welding on an installation site is not needed; the open fire connection operation isavoided; the mounting is easier and more convenient; the integral structure is adopted; both pressure and temperature changes are not afraid; the strength is higher; the sealing performance is higher. and leakage is not likely to happen after long-term use in a worse working environment, so that the operation is safer.

A resilient device for absorbing at least one of shock and vibration includes a first portion, and a second portion which extends outwardly from the first portion and curves in a first direction away from the first portion and then recurves in a second direction towards the first portion. The method includes the step of securing the first portion to one of a first member and a second member disposed in spaced relationship to the first member and the step of abuttingly engaging the second portion to an opposed one of the first member and the second member wherein the second member is capable of withstanding application of at least one of shock and vibration and the resilient member temporarily changes its original shape for absorbing such at least one of shock and vibration.

An LED power supply with a protection circuit, the LED power supply includes a DC / DC switching power supply, and the DC / DC switching power supply includes a capacitor. The LED power supply also includes a protection circuit. The protective power supply includes a detection unit for detecting the charging state of the capacitor, a control unit, a switch unit, and a current limiting unit. The current limiting unit is used to limit the magnitude of the current flowing through the capacitor. When the detection unit detects that the capacitor is full, it sends a control signal to the control unit, and the control unit controls the switch unit to turn on after receiving the control signal, so that the LED power supply with the protection circuit enters normal operation state. Because the LED power supply with protection circuit has the current limiting unit, and the current limiting unit can limit the inrush current to a very small value in the early stage when the LED power supply is turned on under the cooperation of the detection unit and the control unit. Below, so that it can meet the more harsh use environment.

An improved fluid level sensor includes a radially magnetized magnet integrated into a float, and a Hall sensor adapted to monitor the magnet field emitted from the magnet. This arrangement provides a continuously variable signal across a range of travel, such that a controller receiving the signal can produce precise fluid level measurements and detect operational states of an associated device based on fluid behavior. In addition, the present fluid level sensor is suitable for use in harsh service environments, both because it is physically resilient to fouling, and because the controller is capable of detecting fouling by sensor behavior. In the context of a steam cooker, the present fluid level sensor can also sense low-water, overfill and fouling conditions, while remaining relatively insensitive to food residue, water scale buildup, corrosion and foaming.

An electronic digital controller, such as a load cell indicator, is disclosed in which a number of components, such as a circuit board, display, and keypad are placed within an enclosure, and the enclosure is bonded closed, such as using an adhesive, to render the enclosure watertight. The keypad is a touch sensitive, capacitive keypad with no moving parts, and it is housed behind a rigid panel. An optoelectronic transceiver allows for data exchange with an electronic memory device housed in the adhesively sealed enclosure and allows for data exchange and for updating or modification of software code housed therein. Other components, such as another circuit board, a power supply, and block connectors, are placed in an adjacent enclosure, and the circuit boards in the two enclosures are electrically connected. The power supply is preferably a potted AC power supply but may also include a battery.

The invention discloses a sliding extrusion type ball valve having an integral structure in the technical field of ball valves, comprising: a valve body, a socket being provided at one end, and a valve end sliding extrusion pipe being fixedly arranged at the other end, the valve end sliding extrusion pipe and the valve body being of an integral structure, a limiting ring being annularly arranged on the outer wall of the valve end sliding extrusion pipe, and a valve end connecting cylinder being fixedly arranged on the outer side of the limiting ring; and a sliding extrusion pipe fitting, one end being a connecting plug, and the other end being a clamping cylinder, a clamping and pressing ring being annularly fixed to the outer wall, and a limiting step being annularly fixed to the inner wall, the clamping and pressing ring being isolated at the outer wall conjunction between the connecting plug and the clamping cylinder, and the limiting step being isolated at the inner wall conjunction between the connecting plug and the clamping cylinder. The operation is more convenient; the welding on an installation site is not needed; the open fire connecting operation is avoided; the mounting is easier and more convenient; the integral structure is adopted; both pressure and temperature changes are not afraid; and leakage is not likely to happen after long-term use in a worse working environment, so that the operation is safer.

The invention provides an orthographic projection screen and a production method of a screen body thereof. The orthographic projection screen comprises a screen body which comprises a flat curing force layer made of PET (polyethylene terephthalate), an inner arc structure layer, a projection paint layer, a lusterless paint layer and a light absorption layer, the light absorption layer is arranged at the back of the flat curing force layer, the inner arc structure layer is arranged in the front of the flat curing force layer, one side, back to the flat curing force layer, of the inner arc structure layer concaves to form an inner arc, the projection paint layer is arranged on the side, and the lusterless paint layer is arranged on the projection paint layer.

A magneto-optic sensor for oilfield application, the sensor (1, 1′, 101, 101′) receives an incident beam IB, IBA, IBB, IBC, IBD and comprises a polarizing element (3, 103) for providing a determined state of polarization beam and a Faraday rotator (4, 104) for providing a response beam having a modified state of polarization. The sensor provides a response beam (RB, RBA, RBB, RBC, RBD having an intensity dependent on an external magnetic field representative of a particular characteristic of a well-bore casing CC, CR applied on the Faraday rotator (4, 104).

An improved fluid level sensor includes a radially magnetized magnet integrated into a float, and a Hall sensor adapted to monitor the magnet field emitted from the magnet. This arrangement provides a continuously variable signal across a range of travel, such that a controller receiving the signal can produce precise fluid level measurements and detect operational states of an associated device based on fluid behavior. In addition, the present fluid level sensor is suitable for use in harsh service environments, both because it is physically resilient to fouling, and because the controller is capable of detecting fouling by sensor behavior. In the context of a steam cooker, the present fluid level sensor can also sense low-water, overfill and fouling conditions, while remaining relatively insensitive to food residue, water scale buildup, corrosion and foaming.

The present invention generally relates to dietary supplement and pharmaceutical formulations comprising layered acid protective oral dosage formulations comprising probiotics and provided as single unified or cohesive dosage form units. Each individual acid protective layer of the cohesive dosage form provides one of a different probiotic payload, a different release profile to target delivery of probiotic to a particular region in the gastrointestinal tract, or both different probiotic payloads and release profiles to target delivery of different probiotics to particular regions in the gastrointestinal tract.