43results about How to "Easy field replacement" patented technology

A furniture structure and method are provided for chairs or other furniture as used in offices and homes. The structure provides an improved method of assembly using stretchable fabric spaced between opposing side frame members. Inserts attached to the fabric are used to selectively draw the fabric towards the side frames with threaded members so that a desirable tension can be applied to the fabric for comfort and aesthetic purposes. When worn the fabric can be easily replaced in the field by unskilled consumers.

An actuator load path monitoring system for an aircraft having an aircraft structure, a control surface, and, an actuator connected between the aircraft structure and the control surface to support and position the control surface as desired relative to the aircraft structure. The actuator is of a type including a) an upper actuator assembly securely connected to the aircraft structure, including a motor assembly and gear assembly; b) a ball screw assembly operatively connected to the gear assembly; c) a tie-rod assembly positioned within the ball screw assembly; and, d) a lower actuator assembly securely connected to the control surface, wherein actuation of the ball screw provides selected positioning of the control surface. The actuator load path monitoring system includes an upper load sensing assembly positioned in an upper load path between the upper actuator assembly and the aircraft structure. The upper load sensing assembly provides upper indications of the applied forces in the upper load path when the upper load path is disconnected. A lower load sensing assembly is positioned in a lower load path between the lower actuator assembly and the control surface. The lower load sensing assembly provides upper indications of the applied forces in the lower load path when the lower load path is disconnected. A computer system receives the upper and lower indications of applied forces and analyzes the upper and lower indications, thereby monitoring the structural integrity and safety of the upper and lower load paths by annunciating the detection of a failed portion thereof.

The present invention is directed to a diaphragmatic (planar) electroacoustic transducer that forms a complete sound radiating transducer and provides high efficiency and linearity. The diaphragm is easily exchangeable and rectangular in shape, and may be made of very thin polyamide film with a plurality of aluminum conductors formed on one side of the diaphragm. The plurality of conductors form two identical and symmetrical coils such that conductors of each coil are interlaced. The two sections of the coils are disposed in dense air-gaps of the magnet system, which comprises a plurality of high (BHmax) Neodymium magnets. The binary interlaced coils can be utilized in a number of modes, for the purpose of accomplishing a variety of operating modes.

The present invention is directed to new and improved armor protection that can replace the existing crew cabin with a field replaceable armored crew compartment to be attached to the existing body of an HMMWV military vehicle to protect the military personnel within from explosive blasts, roll-over or collisions. In accordance with the concepts of the present invention, in order to provide additional protection to personnel in the HMMWV crew compartment, a sacrificial V shaped hull is designed to be attached onto the underside of the crew compartment over the HMMWV frame rails. In the event of an explosion underneath the HMMWV, the V shaped hull will shield the personnel inside the cabin.

A washer / extractor having a one-piece plastic water hose connecting fitting having a base plate, a tubular hose connection portion that defines a passageway communicating between a hose connected to the fitting and an opening in the wall to which the fitting is mounted, and a pair of clamping members disposed in parallel relation to a rear side of base plate. The wash tub opening has a key hole configuration which enables the arms of the fitting to be positioned into the opening in a first position of the base and upon rotation of the base plate to a second position locates the clamping arms behind mounting portions of the wall for securement by respective fasteners extending through the base plate, wall mounting portions, and clamping arms.

A bead lock tire rim with a supplemental tread on the bead lock to protect the rim and the bolts. The tread extends past the edge of the rim to keep the tire from being split and the side area of the supplemental tread protects the bead lock while providing enhanced traction to the sidewall of the rim. A rim using a rounded projection to eliminate tire cutting and recessed nut locations with secure faceting is also provided for simple field repairs and long term durability.

A removable radiation sensor for connecting to a panoramic dental radiation imaging system. The sensor includes a radiation sensor unit mounted in a housing. Connector bearings are positioned within the housing so as to engage with a pair of connector pins provided as part of the upright support of the imaging system. A lock pin within the housing is selectively slidable between Locked and Unlocked, and biased toward Locked. The lock includes a locking pin with a groove, and when the groove is aligned with the respective connector pin, the lock is unlocked, and that connector pin is slidable axially within the bearings. When the groove is not aligned with the connector pin, the lock is locked, the locking pin engaging with a groove formed for that purpose in the connector pin. The sensor has a field-replaceable electrical connector, to reduce maintenance cost.

An integrated load sensing system includes a housing including a coupling pin portion thereof. A bridge circuit includes a set of strain gauges bonded to the coupling pin portion. A bridge circuit excitation, error correction, and amplification (BCEECA) subsystem is operatively connected to the bridge circuit for receiving indications of shear load from the strain gauges, correcting signal error, and amplifying the indications of shear load. The BCEECA subsystem provides amplified output signals. A power conditioning module is operatively connected to the BCEECA subsystem for receiving power from an external power supply and conditioning power to an appropriate state for driving the bridge circuit as well as an appropriate state for error correction and amplification circuitry within the BCEECA subsystem. A logic module compares the amplified output signals to a predetermined signal threshold and provides latching of enunciation in accordance with a selected delay after the threshold is surpassed. An enunciation element providing enunciation of the output signals surpassing the signal threshold in accordance with the logic module. The bridge circuit, the BCEECA subsystem, the power conditioning module, the logic module, and the enunciation element are contained and sealed within the housing. The invention includes a method for in situ testing of a shear load sensing system for a mechanical system.

The invention discloses a switching value signal processing method. An analog output signal of an optical coupler in a switching value signal processing device is connected to one path of Analog to Digital Converter ADC input end connected with a central processing unit CPU; actions corresponding to different direct current rated voltages input by the optical coupler and a return threshold value are pre-stored in an nonvolatile memory; and the CPU performs analog sampling on an output signal of the optical coupler, and the obtained sampling value is compared with the preset rated voltage action and the return threshold value input by the optical coupler in the nonvolatile memory so as to obtain the actual state of the switching value, namely the switching value is 1 or 0. The analog output signal of the optical coupler and an output signal of a temperature measuring chip for measuring the working temperature of the device cabinet are respectively connected to ADC input pins of the CPU; and the actions of different direct current rated voltage and the return threshold value are pre-stored in the nonvolatile memory E2PROM, and the obtained sampling value is compared with the regulated preset action and the return threshold value of the E2PROM, and the actual switching state is obtained.

The invention discloses a drive device based on a gas-liquid combination spring and a valve actuator. The drive device comprises the actuator and a power cylinder. The power cylinder is installed on the actuator and provided with the gas-liquid combination spring. The gas-liquid combination spring comprises a pressure container tank. A gas input opening is formed in the upper end of the pressure container tank. A compressed gas cavity is formed in the upper portion in the pressure container tank, and a hydraulic oil cavity is formed in the lower portion of the pressure container tank. The compressed gas cavity is filled with compressed gas. The hydraulic oil cavity is filled with hydraulic oil. A hydraulic oil outlet is formed in the lower end of the pressure container tank. The gas-liquid combination spring with the same function replaces a traditional metal spring or a metal spring cylinder only serving as a valve actuator. The structural design, the manufacturing technology, site replacement, breakdown maintenance, the actuator drive valve application efficiency and the work reliability of the gas-liquid combination spring are improved greatly, and the manufacturing cost and the installing work difficulty are reduced greatly.

The invention provides a bucket-opening mechanism of a mining excavator bucket and relates to the bucket of the mining excavator. The bucket-opening mechanism is used for solving the problem of high failure rate of the bucket-opening winding motor of the existing bucket-opening mechanism of the excavator. The bucket-opening mechanism comprises a bucket-opening winding machine, a guiding pulley mounted on an erector arm and fixed through a saddle, a wire rope connected to the bucket-opening winding machine and a fixed pulley mounted on a side wall of a bucket rod, wherein a rocker lever is mounted on the side wall of the bucket rod and is located behind the fixed pulley; the wire rope is connected to the long arm end of the rocker lever through a wedge sleeve in the form of passing by the fixed pulley; and the short arm end of the rocker lever is connected to the bucket through the wire rope. The bucket-opening mechanism is used for a surface mining excavator and has the advantages of low failure rate of bucket-opening winding motor, low production cost of products, convenience in on-site replacement, labor-saving and time-saving operation, high efficiency, safe and reliable use, and the like.

The invention discloses a safety protection and control system for a closed space in an acidic etchant gas environment. The system integrates acidic etchant gas purification, positive pressure protection, alarming and oxygen self-supply, comprises five main parts, namely an acidic etchant air filtering system, an air-conditioning system, a control center, a main-control box and an oxygen self-supply system, and is applicable to safety protection for personnel and equipment in a closed space in the environment of any of acidic etchant gases of sulfur dioxide, hydrogen chloride, nitrogen oxide, hydrogen sulfide, chlorine gas, sulfuric acid, hydrochloric acid, nitric acid mist. As for an acidic etchant gas with the initial concentration of 500-2,000 ppm, the effective protection time is 30 minutes at least and 180 minutes at most; even when the acidic etchant air filtering system is in a complete failure, the closed space can keep an excess pressure for 30 minutes through the oxygen self-supply system, and be evacuated to a safety zone on the condition that the closed space remains in operation.

Improved serviceability of cold metal cutting machines is accomplished in a modified gearbox structure enabling several annular components that are conventionally attached by press-fit to be attached instead by slide-fit for easy removal and replacement, eliminating hammering and / or heating required conventionally to release press-fit components. Press-fitting of a motor shaft coupling is eliminated by introduction of clamping slide-fit structure. Press-fits of two thrust bearings to the housing are eliminated by introduction of slide-fit adaptors. Instead of the conventional practice of making the saw rotor integral with the low speed shaft, a separate saw rotor bolted to the shaft enables easy replacement of the oil seal.

The invention relates to a silica film all-in-one keyboard which comprises a face plate layer, a lower substrate layer with a film circuit, an upper substrate layer with electric conduction wafers and an insulation interlayer. The face plate layer comprises a polyester film layer and a silica gel layer below the polyester film layer, the polyester film layer is connected with the silica gel layer in a hot-press mode, a plurality of upwards-plump keys on the polyester film layer are connected with corresponding upwards-plump keys on the silica gel layer, the plump heights H of the keys on the polyester film layer are 0.5-1.0mm, the lower portion of the silica gel layer is connected with a sealing gasket layer through a peelable glue layer, the sealing gasket layer is fixedly connected with the upper substrate layer, the upper substrate layer is fixedly connected with the lower substrate layer through the insulation interlayer, protrusions corresponding to the keys on the polyester film layer are arranged on the upper substrate layer, and the electric conduction wafers at the bottoms of the protrusions correspond to electric conduction strips on the film circuit. The silica film all-in-one keyboard is simple and reasonable in structure, capable of improving the hand feeling of the keyboard and small in pressing force, reduces labor intensity, brings convenience to replacement of the face plate layer, and reduces use cost of the keyboard.

The invention discloses a fabricated steel frame structure supporting joint and a connecting device thereof. The fabricated steel frame structure supporting joint comprises a supporting base and a first supporting joint, the first supporting joint is fixedly installed on the supporting base, the supporting base is used for being connected with a frame column or a frame beam, and the first supporting joint is used for being connected with an inclined support; the supporting base comprises a first end plate, a rib plate and a second end plate, the first end plate and the second end plate are arranged in parallel oppositely, and the first end plate and the second end plate are fixedly connected through the rib plate; the first supporting joint comprises two side wing plates, a supporting plate and two connecting plates; the side wing plates are vertically arranged on one side of the supporting plate, the included angle between the axis of the side wing plates and the axis of the rib plateis an acute angle, and the connecting plates are vertically arranged on the other side of the supporting plate. The structure is simple, and the size of each component can be machined and manufactured in an industrialized mode according to needs, field replacement is facilitated, interchangeability is good, standardized production is facilitated, transportation and installation are facilitated, and the building construction efficiency can be improved.

The invention discloses a vertical bar planting accurate positioning and drilling device and a construction method thereof. The positioning and drilling device comprises reserved steel bars connectedto a bottom plate, a supporting unit installed at the upper portion of the bottom plate, a lifting unit connected to the upper portion of the supporting unit, a positioning and drilling unit connectedon the lifting unit and a dust absorption unit connected between the supporting unit, the lifting unit and the positioning and drilling unit. According to the vertical bar planting accurate positioning and drilling device and the construction method thereof, when construction is performed, by means of the arrangement of the positioning and drilling unit, steel bar holes needing vertical bar planting can be accurately positioned and punched; by means of the arrangement of the dust absorption unit, targeted treatment is conveniently performed on dust generated in the drilling process, and by means of the section design of a dust absorption pipe, different dust absorption treatment can be performed according to the amount of the dust removal quantity; by means of the arrangement of a liftingrack, manual control can be performed according to the punching depth, and the punching requirements of different heights are met; and by means of the arrangement of the supporting unit, on the one hand, a base bearing foundation is provided, on the other hand, convenient and fast moving and positioning can be performed at the construction site through castors.

The invention relates to a rotary type safety magnetic positioning logging instrument. The logging instrument is formed by sequentially connecting a headstall assembly, a rotary balancing assembly anda magnetic positioning assembly. The headstall assembly comprises a torpedo spring, a torpedo spring seat, a fishing socket and a torpedo single-taper sleeve. The rotary balancing assembly comprisesa rotary upper connector, a threaded ring, a wire passing barrel, a female pin sleeve, a female pin, a single-core sliding ring, a hollow shaft, a rotary fixed connector, a rotary movable connector, abalancing shaft barrel, a balancing piston, a balancing cylinder, a pressure bearing disc and a single-core connecting base. The magnetic positioning assembly comprises an upper magnetic steel cylinder, a front magnetic outer cylinder, a coil rack, magnetic steel, a cement resistor, a lower magnetic steel cylinder and an adapter. The logging instrument integrates the functions of a safety headstall, a rotary short-circuit logging instrument and a magnetic positioning logging instrument, and is reasonable in structure, small in length, light in weight, safe and reliable, and convenient to maintain.

A radiation detector system and method that significantly reduces the cost of conventionally constructed radiation detectors is disclosed. The disclosed system generally comprises an injection molded detector body incorporating plastic material with embedded feed-thrus that are encapsulated within the detector body. This detector body is mated to a detector window assembly using a gasket or other means of sealing to inhibit gas leakage. The mating methodology between the detector body and the detector window assembly is by means of plastic snap-on tabs in these structures that permit semi-permanent mating while also allowing the structures to be easily disassembled for repair and maintenance. The present invention system / method permits a significant hardware cost reduction as compared to conventional prior art radiation detector construction methodologies.

The embodiment of the invention discloses a microwave high-pressure reaction kettle. The microwave high-pressure reaction kettle comprises a kettle body, a kettle cover, a stirring device connected to the kettle cover, and amicrowave energy feedback device fixed on the kettle cover through a connecting flange; the microwave energy feedback device comprises a microwave generator and a microwave dielectric window connected with the outlet end of the microwave generator; the microwave medium window comprises a shell with a containing cavity, the shell comprises a cover body and a medium container fixedly connected with the cover body, and the containing cavity is formed between the cover body and the medium container; the microwave dielectric window further comprises a pressure-bearing medium fixed in the containing cavity; the cover body comprises a first through hole corresponding to the outlet end of the microwave generator; the medium container comprises a second through hole corresponding to the first through hole; a top port of the connecting flange is fixedly connected with the medium container; and a bottom port of the connecting flange extends to the inner side of the kettle cover. The reaction kettle provided by the invention is higher in pressure bearing capacity and better in temperature resistance and microwave matching performance.

An optical fiber type comprehensive on-line real-time pantograph detection and control system disclosed by the invention relates to the comprehensive on-line real-time pantograph detection and control technology for railway locomotives, subway cars, electric multiple units or the like, and belongs to the field of safe train running monitoring. The invention integrates an optical fiber type on-line real-time carbon pantograph slider abrasion detection system and an optical fiber type on-line real-time pantograph lifting pressure detection system together. The optical fiber type on-line real-time carbon pantograph slider abrasion detection system is used for detecting the abrasion of a carbon pantograph slider. The optical fiber type on-line real-time pantograph lifting pressure detection system is used for measuring the lifting pressure value Fc of the carbon pantograph slider. An air bag control valve is controlled according to a preset criterion to adjust the lifting pressure Fc and contact state of the carbon pantograph slider in order to prevent disconnection, lifting and other circumstances, and meanwhile, the detection systems can be utilized to prolong the service life of the carbon pantograph slider and increase the current-receiving quality of trains, thus guaranteeing the safe running of trains.

The invention provides an annular drill pipe power tong. The annular drill pipe power tong includes a base and a clamping mechanism, the base has a central through hole, and the clamping mechanism includes: a driving assembly; a gland assembly, and the driving assembly can drive the gland assembly Move along the axial direction of the central through hole; multiple power tong slips are distributed along the circumference of the central through hole; connecting rod, one end of the connecting rod is hinged with the gland assembly, and the other end of the connecting rod is connected with the power tongs The shoes are hinged, and when the drive assembly drives the gland assembly to move along the axis of the central through hole, the gland assembly can drive the power tong slips to surround or expand radially of the central through hole through the connecting rod. Through the annular drill pipe power tong of the present invention, it can realize the clamping of the drill pipe in the continuous cycle drilling process, and can provide sufficient clamping force for the drill pipe, ensuring that the annular drill pipe power tong, the drill pipe and the drill pipe are clamped. There is no relative sliding between the clamping mechanisms, and the indentation on the drill pipe is guaranteed to be as small as possible.

An optical fiber type on-line real-time carbon pantograph slider abrasion detection system disclosed by the invention relates to the carbon pantograph slider abrasion detection technology for railway locomotives, subway cars, electric multiple units or the like, and belongs to the field of safe train running monitoring. The optical fiber type on-line real-time carbon pantograph slider abrasion detection system comprises a light source, a multi-core optical fiber plug, an optical fiber type abrasion sensor, a photocoupler and a signal processing unit; the optical fiber type abrasion sensor is mounted in the abrasion area of a carbon pantograph slider by utilizing the light transmittance of optical fibers; when the carbon pantograph slider is abraded, the optical fibers are broken, as a result, the light transmittance is damaged to disappear, and by statistically analyzing the breakage of the optical fibers, the abrasion value of the carbon pantograph slider is given. The optical fiber type on-line real-time carbon pantograph slider abrasion detection system can dynamically detect the abrasion of carbon pantograph sliders of railway locomotives, subway cars, electric multiple units or the like throughout on line and in real time. The optical fiber type on-line real-time carbon pantograph slider abrasion detection system has the advantages of high precision, high anti-interference capability, long service life and low cost, and can provide a basis for the automatic lifting and dropping of pantographs and the replacement of carbon pantograph sliders and support the analysis of pantograph-overhead contact system relation.