77results about How to "Uniform displacement" patented technology

A micromachined ultrasonic transducer array comprising a multiplicity of cMUT cells built on a substrate. Each cMUT cell comprises a compliant support structure built on the substrate, a membrane supported over a cavity by the compliant support structure, a first electrode supported by the membrane, and a second electrode that forms a capacitor with the first electrode, the cavity being disposed between the first and second electrodes. The compliant support structure uncouples the non-membrane outer surface of each cMUT cell from the supporting substrate.

An eccentric mass (EM) motor in a vibrotactile transducer provides a wide band vibrational stimulus to a mechanical load in response to an electrical input. The eccentric mass and motor may form part of the transducer actuator moving mass, which is in contact with a load, i.e, the skin of a user. The moving mass and the actuator housing may be in simultaneous contact with the load. The moving mass may be guided by a spring between the actuator housing and the moving mass. The load, moving mass, spring compliance, and housing mass make up a moving mass resonant system. The spring compliance and system component masses may be configured to maximize the actuator displacement and / or tailor the transducer response to a desired level. This configuration may be implemented as a low-mass wearable wide-band vibrotactile transducer.

An illuminator and surgical illumination system are disclosed, one embodiment of the surgical illumination system comprising: a light source for providing a light beam; an optical cable, optically coupled to the light source for receiving and transmitting the light beam; a handpiece operably coupled to the optical cable; an optical fiber assembly operably coupled to the handpiece, wherein the optical fiber assembly is optically coupled to the optical cable to receive and transmit the light beam and wherein the optical fiber assembly comprises a plurality of fiber guides, wherein each fiber guide comprises a cladding having one or more fiber cores for transmitting and scattering the light beam to illuminate the surgical field, and a cannula, operably coupled to the handpiece for housing and directing the optical fiber assembly. The surgical illumination system can further comprise a separator operable to maintain a spacing between the fiber guides. The optical fiber assembly, the cannula, and the handpiece can be fabricated from biocompatible materials. The optical fiber assembly can be operably coupled to the handpiece to enable linear displacement of the optical fiber assembly within the cannula. The handpiece can include an adjustment means, such as a push / pull mechanism, for adjusting the linear displacement of the optical fiber assembly. Other adjusting means as known to those in the art can also be used including, for example, a mechanical coupling, an electrical coupling, a magnetic coupling, a pneumatic coupling or any combination thereof. The distal end of the optical fiber assembly can be coincident with an open aperture of the cannula. Adjusting the linear displacement via the adjusting means can thus cause the optical fiber assembly to exit the open aperture by an amount corresponding to the change in linear displacement (a reverse adjustment can retract the optical fiber assembly). Further, a separator can be positioned between the fiber guides in such a way that the fiber guides can be uniformly displaced outward from one another by an amount proportional to the change in linear displacement from the distal end of the cannula.

The integral vertical stepper is comprised by a mechanical system intended to generate a dependent and coordinated ascent and descent constant movement, sliding on an upright structure that holds the pedal system, and this in turn supports the two square profiles utilized as handles, thus achieving that all the elements work in a coordinate way, due that it unifies all its constituent elements, with the only purpose of giving stability, support and motor coordination when performing the exercises and routines proposed, thus avoiding risks and possible accidents. Also, said mechanical system is characterized by its simplicity in the design and its functional features, due that all its constituent parts are designed to carry out the adequate functions, i.e., a metal wire coated with a plastic layer, a pulley, a pedal system, two parallel rectangular profiles, two square profiles used as handles, two rails and three wheels.

The invention discloses a stepless delivery regulation method of reciprocating-piston compressor, which is characterized in that duty cycle is determined using the maximum delivery and the actually required delivery of the compressor under full load; an inhalation valve is forced to open or freely closed through a control system and a or a plurality of executive device (s) for pressing the inhalation valve, enabling load circulation and non-load circulation to be alternatively distributed to comply with the duty cycle, thereby evenly supplying the required delivery. The invention has the advantages of capability of 0 to 100% continuous delivery regulation, less pressure fluctuation, saved energy, lowered noise, simple and reliable regulation effect.

The invention discloses a stepless adjustment method for the discharge volume of a reciprocating piston compressor. The method determines the duty ratio by the maximum discharge volume of the full-load operation of the compressor and the actual required discharge volume. Through a control system and a Or multiple actuators that can press open the suction valve to control the forced opening or free opening and closing of the compressor suction valve, so that the compressor loading cycle and no-load cycle are distributed at intervals and in line with the duty cycle, so as to uniformly provide all Exhaust volume required. The invention has the effect of realizing continuous adjustment of exhaust volume from 0 to 100%, small pressure fluctuation, energy saving and noise reduction, and simple and reliable adjustment.

An illuminator and surgical illumination system are disclosed, one embodiment of the surgical illumination system comprising: a light source for providing a light beam; an optical cable, optically coupled to the light source for receiving and transmitting the light beam; a handpiece operably coupled to the optical cable; an optical fiber assembly operably coupled to the handpiece, wherein the optical fiber assembly is optically coupled to the optical cable to receive and transmit the light beam and wherein the optical fiber assembly comprises a plurality of fiber guides, wherein each fiber guide comprises a cladding having one or more fiber cores for transmitting and scattering the light beam to illuminate the surgical field, and a cannula, operably coupled to the handpiece for housing and directing the optical fiber assembly. The surgical illumination system can further comprise a separator operable to maintain a spacing between the fiber guides.

The invention discloses a calcinator for industrial by-product gypsum. The calcinatory comprises a calcination chamber, wherein a feeding port is formed in the upper end of one side of the calcination chamber, and a discharging port is formed in the lower end of the other side; multiple overflow adjusting plates are arranged in the calcination chamber; the multiple overflow adjusting plates are uniformly mounted in the calcination chamber and divide the calcination chamber into multiple calcination cavities; a heat exchange system is mounted in each calcination cavity and comprises a steam pipe and fins mounted on the outer side of the steam pipe, the steam pipe is of a bending structure from top to bottom, a steam inlet is formed in the upper end of the steam pipe, and a condensate outlet is formed in the lower end. The calcinator for industrial by-product gypsum has the advantages of uniform heating, constant temperature, short standing time, high heat transfer efficiency and low energy consumption.

A temperature-operating water flow valve may include a hollow body having axially offset proximal and distal open ends respectively such that the body may have an internal temperature. A temperature-activated plunger release mechanism may be seated inside the body and intermediately positioned between the proximal and distal open ends respectively. The temperature-activated plunger release mechanism may be automatically reciprocated along a linear travel path as the internal temperature rises above a threshold internal temperature and falls below the threshold internal temperature respectively. A temperature-activated plunger release mechanism may automatically open and close during the reciprocation along the linear travel path such that heated water is respectively permitted and prohibited to egress the distal open end of the body.

The invention discloses a multiple thermal fluid composite system oil displacing method and particularly relates to a method for economically and effectively improving the oil recovery rate for the later period of water displacing normal heavy oil reservoir exploitation. The method comprises the steps of a, injecting mixtures, which is 0.15-0.2 time the formation pore volume, of hot water and flue gases; b, injecting a foaming agent solution into a water injection well for 25-30 d; c, injecting a viscosity reducer solution into the water injection well for 5-10 d; d, injecting the mixtures of hot water and flue gases for 60-80 d; e, repeating the steps b, c and d. The method displaces a great amount of residual oil which cannot be extracted through common water displacing in an oil reservoir, the heavy oil reservoir recovery rate after water displacing is improved greatly by 26.4%, and the final reservoir recovery rate can reach 48.8%. Meanwhile, flue gases generated by combustion are directly injected underground, the thermal efficiency can be improved by more than 10%, and environment pollution is reduced.

The integral vertical stepper is comprised by a mechanical system intended to generate a dependent and coordinated ascent and descent constant movement, sliding on an upright structure that holds the pedal system, and this in turn supports the two square profiles utilized as handles, thus achieving that all the elements work in a coordinate way, due that it unifies all its constituent elements, with the only purpose of giving stability, support and motor coordination when performing the exercises and routines proposed, thus avoiding risks and possible accidents. Also, said mechanical system is characterized by its simplicity in the design and its functional features, due that all its constituent parts are designed to carry out the adequate functions, i.e., a metal wire coated with a plastic layer, a pulley, a pedal system, two parallel rectangular profiles, two square profiles used as handles, two rails and three wheels.

The invention relates to a micro-machined ultrasonic transducer and specifically relates to a spring embedded type micro-machined ultrasonic transducer, in particular to a spring embedded type capacitive micro-machined ultrasonic transducer. The micro-machined ultrasonic transducer comprises a first support layer and a second support layer, wherein a first electrode is arranged on the first support layer, a second electrode is arranged on the second support layer, the second support layer is a substrate, an open structure is arranged on the substrate, the substrate is divided into an upper part and a lower part, and the second electrode is arranged on the upper part; and the first support layer is a commercial veneer, the first support layer is connected with the second support layer through a vertical elastic connector, and a gap is formed between the first support layer and the second support layer. As the micro-machined ultrasonic transducer has better transmitting and receiving performances, the whole surface of the transducer can be a useful region, and the micro-machined ultrasonic transducer can further have a perfect fill factor. The micro-machined ultrasonic transducer can reduce the parasitic capacitance, improve the sensitivity, the breakdown voltage and the design flexibility of the transducer, and improve the reliability and the bandwidth.

The invention discloses a method for increasing oil recovery of heavy oil reservoirs through a composite heat carrier, and particularly relates to a method for increasing oil recovery of heavy oil reservoirs through a composite heat carrier composed of hot water, a gas and a chemical agent. According to the method, crude oil recovery is increased, by injecting hot water and flue gas generated by boiler burning together into an oil layer, and by injecting a foaming agent by means of slug injection. The method includes the steps of a, injecting a mixture of hot water and flue gas 0.15-0.2 times the pore volume of a formation; b, injecting foaming agent solution into a water injection well for 25-30 d; c, injecting the hot water and flue gas mixture for 60-80 d; d, repeating the steps b and c. Water (vapor) can be effectively blocked from channeling, vapor wave and volume are increased, heavy oil recovery is substantially increased, and as the flue gas generated by burning is injected directly underground, heat efficiency can be improved and environmental pollution can also be reduced.