293 results about "Pneumatic circuit" patented technology

A disposable tissue removal device comprises a “tube within a tube” cutting element mounted to a handpiece. The inner cannula of the cutting element defines an inner lumen and terminates in an inwardly beveled, razor-sharp cutting edge. The inner cannula is driven by both a pneumatic rotary motor and a pneumatic reciprocating motor. At the end of its stroke, the inner cannula makes contact with the cutting board to completely sever the tissue. An aspiration vacuum is applied to the inner lumen to aspirate excised tissue through the inner cannula and into a collection trap removably mounted to the handpiece. The rotary and reciprocating motors are hydraulically or pneumatically powered through a foot pedal operated pneumatically circuit. In one embodiment, the cutting element includes a cannula hub that can be connected to a fluid source, such as a valve-controlled saline bag.

A compression treatment system is provided that detects the number of and type of garments connected thereto. The system includes a plurality of ports, valves connected thereto and a number of garments having one or more bladders. The bladders are in fluid communication with a fluid source in a pneumatic circuit, to provide compression therapy once a user confirms the number of and type of garments connected to the system for use by a patient. A single pressure sensor communicates with a plurality of detected bladders located in the one or more garments.

The present invention belongs to the field of robot gripper, in particular, it relates to a robot pneumatic gripper. It is composed of base, two-way drive cylinder, profiling finger, finger arm, balancing drawbar and auxiliary finger. Said invention also provides their connection mode and the working principle of said pneumatic robot gripper.

A system for discharging dried product, particularly for drying filters, drying units and the like, comprising, on a container for treating and containing a dried product, a discharge hole that is controlled by a discharge valve, interposed on a pneumatic circuit suitable to produce a circulation of fluid in output from the discharge hole. An agitator is also provided which acts on the dried product to facilitate its outward conveyance.

An invented fluidic (hydraulic / pneumatic) actuation system is described wherein bidirectional, hydraulic / pneumatically driven elements of multiple components in a common hydraulic / pneumatic circuit inherently provide increases in pressure upon reaching mechanical end points limiting, arresting or stopping further mechanical movement or travel of the driven element of any particular component that switches a sequencing valve system and / or electro-hydraulic / pneumatic pressure switches for directing hydraulic / pneumatic power to other hydraulically / pneumatically driven components in the hydraulic / pneumatic circuit in a timed, sequenced and velocity controlled manner.

A blood pressure monitoring system that includes a compact housing that contains a pneumatic circuit that is removably attached to an inflatable cuff by a hoseless connector so that the cuff can be inflated and deflated to provide blood pressure readings that are detected by a pressure sensor. A controller is also contained in the housing which controls the circuit activities and records blood pressure related data. The controller is linked via a bidirectional communication system with a processor that is contained in a host station which programs the controller and collects and records blood pressure related data. The communication system also allows the monitoring system to communicate over a wider network with other remote stations.

A control valve of high-pressure pneuamtic valve is composed of main valve and magnetic pilot valve which is an electromagnetic high-pressure ball valve. Said main valve consists of valve cover, conic valve core, valve bush and main body. The sealing surface of conic valve core is made of vulcanized rubber. The PTFE is used for the seal between conic valve and valve bush. Its advantages are simple and compact structure, reliable sealing, and high flow controlled by electronic signals.

A vehicle tire inflation system includes an air supply source in fluid communication with multiple tires of the vehicle. A pneumatic conduit extends between and is in fluid communication with the air supply source and the tires. Means are fluidly connected to the pneumatic conduit for enabling selective inflation and deflation of the tires. The means include a first pneumatic circuit for inflation of the tires, and a second pneumatic circuit for deflation of the tires. The second pneumatic circuit is discrete from the first pneumatic circuit and is common to more than one of the tires. The means provides controlled deflation of the tires in the second pneumatic circuit based upon a predetermined condition, preventing deflation of the tires until the vehicle is parked, or limiting the deflation of the tires, which in turn enables the tire inflation system to accommodate a desirable increased pressure in the tires.

The invention discloses a ceramic floor tile paving device. The device comprises a frame, a turnover mechanism, a lifting mechanism and a power system, wherein the frame comprises a bottom plate and universal wheels, the positioning ends, corresponding to a crank and a rocker, at the left end of the bottom plate are provided with protruding platforms used for hinged connection, the middle section of the bottom plate is hinged with a main air cylinder, and the power system is arranged at the right end of the bottom plate; the turnover mechanism is provided with a connecting bar, the rocker and the crank, which are connected in sequence to form a four-bar mechanism which takes the positioning end of the crank as the shaft and can be driven by the main air cylinder to repeatedly overturn 180 degrees; the lifting mechanism uses a secondary air cylinder at the bottom end of the connecting bar as a power component, wherein an extending end of a piston rod is centered and connected with a flat plate; 4 to 9 suction disks, which are connected in series and controlled to be connected or disconnected by a valve, are uniformly distributed on the outer end surface of the flat plate; and the power system is provided with an air compressor and air storage tank, and the main air cylinder and the secondary air cylinder are connected by an air supply tube to form a pneumatic circuit. When the device is used, the ceramic floor tiles which are horizontally placed and wait for paving overturn 180 degrees for vertical descent paving, and because the floor tiles are in parallel contact with a base material, the paving quality is good, the working efficiency is high and the labor intensity of workers is lowered.

The invention relates to the field of biomimetic robots, in particular to a lower jaw masticatory robot based on pneumatic artificial muscle. The lower jaw masticatory robot is good in softness and compact in structure. According to the technical scheme, the lower jaw masticatory robot based on the pneumatic artificial muscle comprises a support, a vertical plate of the support is fixedly provided with an upper jaw fixed platform, and a lower jaw movable platform is arranged between the upper jaw fixed platform and a base plate of the support; a temporalis mechanism and a wing muscle mechanism are connected between the support and the lower jaw movable platform; a masseter mechanism is arranged between the upper jaw fixed platform and the lower jaw movable platform; and the temporalis mechanism, the masseter mechanism and the wing muscle mechanism each comprise the pneumatic muscle, the pneumatic muscle is connected with pneumatic circuits through gas circuits, and the pneumatic circuits are electrically connected with a control system. The lower jaw masticatory robot based on the pneumatic artificial muscle is provided.

The invention discloses a plunger-typed double piston rod pneumatic hydraulic cylinder and a gas-liquid joint control position and speed servo control device; the left air cavity and a right air cavity of the plunger-typed double piston rod pneumatic hydraulic cylinder are arranged in an air cavity cylinder barrel and separated by a piston, a left oil chamber and a right oil chamber thereof are respectively arranged in a left oil chamber cylinder barrel and a right oil chamber cylinder barrel; the left and right ends of the piston are respectively connected with a left duty plunger rod and a right duty plunger rod. Two ends of the hydraulic high-speed on-off valve of the gas-liquid joint control position and speed servo control device are respectively connected with the left and right oil chambers; the right duty plunger rod is also connected with a load which is sequentially connected with a displacement sensor, an A / D acquisition card, a computer, a multi-channel D / A converter card, a multi-channel I / O control card and a switching valve driving circuit board. The invention takes the pneumatic supply as the power supply to control the movement of a piston rod pushed by a pneumatic circuit, and carries out the precise position and speed control through inhibiting the vibration of the pneumatic servo caused by the great gas compressibility by the gas-liquid joint control, thus solving the contradiction of positioning accuracy and rapidity.

The invention discloses an automatic quick-change fixture tray used for implementing one-off rapid connection and disconnection between electric signals of a fixture plate and a mechanical hand and a pneumatic circuit. A mechanical side tray is arranged on a mechanical arm; a fixture side tray is connected to the fixture plate; and a D-SUB plug of the mechanical side tray is connected with a D-SUB socket of the fixture side tray. During use, a steel ball is pushed by forwarding a piston through air pressure on the mechanical side tray so as to implement the rapid and accurate fixation of the fixture plate and the mechanical hand and the connection between the electric signals and the pneumatic circuit; and the steel ball is poked by drawing back the piston through the air pressure on the mechanical side tray so as to implement the rapid separation of the fixture plate and the mechanical hand and the disconnection between the electric signals and the pneumatic circuit. The automatic quick-change fixture tray has the advantages of light weight, and capacities of using the same fixture plate on different mechanical hands and rapidly positioning the fixture plate at a preset position, implementing rapid exchange of different fixture plates applied to the same mechanical hand, effectively improving the production efficiency of the product, and implementing automatic exchange of the fixture plates without fixture exchange personnel on site.

A device for mixing at least two gaseous components having at least two arms of a pneumatic circuit arranged in parallel and each being suitable for receiving one gaseous component, and for supplying a joint output line with the desired mixture. Each arm comprises a unit for adjusting the flow of the component in question and is made in a polyhedral block of a gastight material comprising at least two opposing flat surfaces to which the intake and output collectors of at least the portion of the pneumatic circuit that makes up said arm connect; said polyhedral blocks of each arm are brought together by assembling one flat surface of one block against a flat surface of the other block.

The present invention discloses and claims a test device and method for testing a rail car brake system. The test device includes a pneumatic circuit and electronic circuit connecting a supply of test air to the rail car brake system being tested. The pneumatic and electronic circuits operate to selectively supply and vent the test air to or from the rail car brake system according to programmed instructions. The test device further includes a web server interface for communicating with a predetermined web page or other source external to the rail car brake system test device to retrieve and download additional programming instructions.

A warning system and a method for alerting a driver of a vehicle that the parking brake of the vehicle is not engaged by generating a warning when the following conditions are simultaneously fulfilled: the ignition of the vehicle is on, the driver access door of the vehicle cabin is open, no throttle lever, or clutch lever or brake lever of the vehicle is activated, the gear shift lever of the vehicle is in the neutral position, and the parking brake is not engaged, and not when—the pressure of a pneumatic circuit associated with the parking brake is below a threshold,—the vehicle speed exceeds a threshold.

A vehicle tire inflation system includes an air supply source in fluid communication with multiple tires of the vehicle. A pneumatic conduit extends between and is in fluid communication with the air supply source and the tires. Means are fluidly connected to the pneumatic conduit for enabling selective inflation and deflation of the tires. The means include a first pneumatic circuit for inflation of the tires, and a second pneumatic circuit for deflation of the tires. The second pneumatic circuit is discrete from the first pneumatic circuit and is common to more than one of the tires. The means provides controlled deflation of the tires in the second pneumatic circuit based upon a predetermined condition, preventing deflation of the tires until the vehicle is parked, or limiting the deflation of the tires, which in turn enables the tire inflation system to accommodate a desirable increased pressure in the tires.

The invention relates to a system for generating, converting, distributing and electrically starting on board an aircraft of the ''bleedless'' type, that is to say with an electrical power architecture and no pneumatic network, characterized in that the electrical distribution channels for high power loads specific to aircraft of the ''bleedless'' type and the electrical distribution channels for conventional loads including technical loads, such as the avionics, the lighting and the fuel pumps and payloads are separate and are powered by separate generators (SG-B, SG-Y; SG-G1, SG-G2) driven by the jet engines (Eng1, Eng2) of the aircraft.

Method of measuring the weight of bulk liquid material within a container of a tractor-trailer combination in which air bag pressure of a pneumatic suspension system is sensed and correlated with the weight of the bulk liquid material within the container. In accordance with the method, the tractor engine is turned off and supplemental pressurized air is introduced into a pneumatic circuit feeding compressed air to the air bags and while not applying the brakes of the trailer.

A paintball gun having a power assisted trigger mechanism is described. The paintball gun includes a body portion defining a launching chamber, a pneumatic circuit for directing propellant gas into the launching chamber, a valve in the pneumatic circuit for controlling the release of propellant, a rotating motor coupled to the valve, a trigger sensor responsive to movement of the trigger, an electric power source, an electric circuit connecting the power source to the motor and a switch operably connected to the trigger sensor for controllably opening and closing the electric circuit.

The invention provides a control system for an attached vibrator used for shield segment concrete vibration. The control system for the attached vibrator used for shield segment concrete vibration comprises a power distribution cabinet, a PLC central processing unit, an input module, an output module, a communication module, an upper computer, a control button, a sensor, a signal indicator light and a pneumatic circuit. The input module provides a sensor signal and a button signal for the central processing unit. The output module executes an output signal of the central processing unit to drive all systems of the pneumatic circuit. Based on the PROFINET protocol, the upper computer interacts with the central processing unit through a communication module. According to the control system for the attached vibrator, parameters such as the vibration frequency, the vibration time, the amplitude and the pneumatic pressure can be monitored and controlled in real time, programmed control overthe attached vibrator is achieved, the labor intensity is relieved, the vibration process can be controlled, and excessive vibration and insufficient vibration are effectively avoided; and concrete quality problems such as bubbles, holes, honeycombs and pitted surfaces of shield segments are eliminated, and the concrete construction quality of the shield segments is ensured.

The invention relates to an electro-pneumatic pressure regulation module (16) for electro-pneumatic brake systems of vehicles, designed as a unit, comprising at least two pressure regulation channels which can be regulated separately, wherein for each pressure regulation channel a regulated working pressure, which is present on at least one working pressure port (44, 46), is generated for at least one brake application device (48, 50) of the brake system based on working air that is derived from at least one compressed air supply (4, 6), depending on the brake demand signals of a braking power sensor (2). The invention includes a) that in order to create pressure regulation channels having separate pneumatic circuits, at least one dedicated supply pressure port (14, 24), which can be connected to a dedicated compressed air supply (4, 6), is assigned to each pressure regulation channel, wherein b) the pneumatic flow paths of each pressure regulation channel, at least starting from the respective supply pressure port (14, 24) to the respective working pressure port (44, 46), are designed pneumatically separate from the pneumatic flow paths of the respectively other pressure regulation channel.

An anesthesia system is disclosed herein, The anesthesia system may include a pneumatic circuit comprising an inspiratory limb, an expiratory limb, and an endotracheal tube. The endotracheal tube may be configured to form a pneumatic coupling between a patient, the inspiratory limb and the expiratory limb. The anesthesia system may also include an anesthesia machine connected to the pneumatic circuit. The anesthesia machine may include a controller configured to identify the presence of a leak in the pneumatic coupling.

An extended term resuscitation system includes a plurality of inflatable cuffs adapted to extend around separate portions of the anatomy of a patient (i.e. the chest, abdomen and legs) for enhancing the circulation when inflated / deflated periodically. A primary low-pressure-high-volume air compressor is in fluid communication with each of the cuffs through individual air handlers. The air handlers are formed with an inflation and a deflation diaphragm valve which, under the control of an electronic timer and a pneumatic circuit, connect the respective cuff to the output of the compressor for inflation or to the atmosphere for deflation. A secondary air compressor provides air under suitable pressure to the pneumatic circuit for the control of the diaphragm valves. As an option the operator may change the cyclical rate and cuff pressure. A ventilator provides oxygen to the patient in selected volumes or on demand.

The invention relates to a novel intelligent crust breaking cylinder technology, belongs to the field of energy saving of pneumatic systems, and discloses a crust breaking cylinder mainly for the aluminum electrolysis industry. The intelligent crust breaking cylinder is quickly retracted after finishing crust breaking, so that the working time of the intelligent crust breaking cylinder under the action of the strongest heat source is greatly reduced, the crust breaking cylinder can run under the lowest pressure as much as possible, and the running time of high-pressure gas is reduced to greatly reduce the consumption of compressed air. The conventional crust breaking cylinder for the aluminum electrolysis industry is improved, so that the long-standing problem of incapability of detecting whether a cylinder head runs in place or not by adopting an electromagnetic signal in the severe working environment of the aluminum electrolysis crust breaking cylinder is radically solved. When a piston rod is in place, a mechanical cylinder position detection device can be triggered to generate a pneumatic pulse signal with certain pressure, and the retraction of the crust breaking cylinder can be controlled by combining the pneumatic pulse signal and a pneumatic loop.

The invention discloses a device and a method for inhibiting flexible structure vibration, based on jet drivers. The device has two nozzles as the jet drivers respectively arranged on the front and the back of the transverse middle part of a flexible beam. On a pneumatic circuit, two nozzles are respectively connected with a two-bit triple valve through pneumatic nozzle joints; the two-bit triple valve is connected with a pneumatic proportional valve; the pneumatic proportional valve is connected with a pneumatic three-link piece; and the pneumatic three-link piece is connected with an air pump. On circuit drive, the two-bit triple valve and the pneumatic proportional valve are connected with a switch valve driving-amplifying circuit board; and the switch valve driving-amplifying circuit board is connected with a multi-channel D / A conversion card. The method for inhibiting flexible structure vibration comprises the following steps that: according to the bending mode information sensed by a piezoelectric sensor and an acceleration sensor, after an active vibration control strategy for switching control is operated, large-amplitude vibration is controlled to attenuate through the jet drivers. The device fully utilizes the characteristic that the jet drivers are high in power, so as to rapidly inhibit large-amplitude vibration.

The invention provides an automobile braking energy recovery and active auxiliary braking automatic control system, mainly comprising a transmission mechanism, a pneumatic circuit device and an electrical control group, wherein the transmission mechanism comprises a belt wheel group and a pneumatic clutch; the pneumatic circuit device comprises an air compressor, a control valve, an air storage tank and an air processing device; and the electrical control group comprises an electrical control unit and a sensor. According to the invention, with adoption of pneumatic energy storage, the requirements on two aspects, namely braking energy recovery and active auxiliary braking, are both taken into consideration, when a vehicle goes downhill for a long distance, an energy recovery and active auxiliary braking process can be started automatically, and the service life of the original braking device is prolonged; and in addition, when the vehicle is detected to be overspeed, an auxiliary braking process can be started automatically, so that the vehicle speed is reduced to a certain degree so as to facilitate the protection of life and property safety of a driver. The automobile braking energy recovery and active auxiliary braking automatic control system disclosed by the invention is low in cost and high in efficiency and safety, meets the requirement on energy saving and emission reduction and the requirement of modern vehicle design on high safety, and has obvious economic and social significance.

A pneumatic circuit whereby small amounts of variations in pneumatic pressure in a tire occurring during tire testing can be adjusted in a short time. The pneumatic circuit includes an air supply source which generates compressed air to be supplied to a tire retained in a tire testing device; a pressure regulating valve which regulates the pressure of the compressed air generated; a discharge / supply valve provided downstream of the pressure regulating valve and by which compressed air is supplied to, or discharged from, the tire; a pressure detection unit provided downstream of the discharge / supply valve and which detects the tire pressure inside the tire; and a volume adjustment mechanism provided between the pressure regulating valve and the tire and which increases or decreases the volume of compressed air in an airflow path between the tire and the pressure regulating valve, as well as in the tire.