Showing papers on "Bellows published in 2007"

Self-powered resonant leadless pacemaker

Abstract: A self-powered medical device, for example a pacemaker, uses the variations of blood pressure inside the heart or a major artery to create a mechanical resonance in an electromagnetic or piezoelectric generator. The resonance extends the time power is generated during the cardiac cycle. The pressure variations compress a bellows carrying the resonant generator. The inside of the bellows may be evacuated to a partial or full vacuum, and a spring restores the bellows to the desired equilibrium point, acting against the blood pressure. The current pulses are stored in a capacitor. Eliminating the battery allows dramatic miniaturization of the medical device to the point it can be implanted at the point of desired stimulation via a catheter.

Self-powered leadless pacemaker

Abstract: A self powered pacemaker uses the variations of blood pressure inside the heart or a major artery to create a periodic change in the magnetic flux inside a coil. The pressure variations compress a bellows carrying a magnet moving inside a coil. The inside of the bellows is evacuated to a partial vacuum, and a spring restores the bellows to the desired equilibrium point, acting against the blood pressure. The current pulses are stored in a capacitor. Eliminating the battery allows dramatic miniaturization of the pacemaker to the point it can be implanted at the point of desired stimulation via a catheter. The invention includes means of compensating for atmospheric pressure changes.

Energy utilization and recovery type cell full air air-condition set

Abstract: It relates to an energy utilization and recovery unit type all-air air conditioning system in heat ventilation and air conditioner engineering It comprises return bellow, exhaust bellow, entry bellow and new bellow, with exhaust valves set between the return and exhaust bellows, return valve set between the return and entry bellows, new valve set between the entry and new bellows and by-pass valve between the new and exhaust bellows The return bellow is made of air return, controller and return air filter The exhaust bellow is made of exhaust outlet, exhaust machine and exhaust condenser The entry bellow is composed of entry, reheated condenser, entry machine, humidifier, and evaporator And the new bellow is composed of new wind filter, new wind inlet, and compressor Through optimized combination of all the bellows, program self controlled running for corresponding air flow channels regulating under different running conditions, it can realize the best energy utilization and recovery The all-air air conditioning system can be used for big space air conditioner, multi process air conditioner and those demanded whole year running

Flexible heat pipe

Abstract: A heat pipe for cooling a heat-generating component has a generally planar, sealed flexible body having an evaporator section, a condenser section, and a flexible bellows section. The bellows section is located between the evaporator section and the condenser section along a longitudinal length of the body. A chamber extends from the evaporator section to the condenser section inside the body and contains a working fluid. The bellows section includes internal supports to keep the chamber open during repeated bending of the heat pipe at the bellows section.

Chemical liquid supplying apparatus

Abstract: A chemical liquid supplying apparatus capable of discharging chemical liquid with high accuracy and monitoring a leakage of an incompressible medium from a region between a piston and a cylinder is provided. A pump has a flexible tube for partitioning a pump chamber and a drive chamber, and the incompressible medium is supplied to the drive chamber by the piston reciprocating within a cylinder hole of the cylinder. A first bellows cover for forming a first seal chamber is provided between a large-diameter piston portion and the cylinder, and a second bellows cover for forming a second seal chamber is provided between a small-diameter piston portion and the cylinder. To detect pressure of the incompressible medium enclosed in the seal chambers, a seal-chamber pressure sensor is attached to the cylinder, and a deterioration degree of seal members is determined by detecting the pressure.

Vacuum circuit breaker of tank type

Abstract: A vacuum circuit breaker includes a movable-side conductor that is tubular and comprises an inside cavity. A movable side contact case includes a chamber which communicates with a space on a non-vacuum side of a bellows. The chamber is isolated from a space filled with insulating gas in a ground tank by a sealing device. The chamber communicates with an outside atmosphere through the inside cavity of the movable-side conductor.

Method for clamping a weft thread in a jet weaving machine, in particular air-jet weaving machine, clamping device and jet weaving machine

Abstract: A method and a clamping device for clamping a weft thread in a jet weaving machine are proposed. The weft-thread wire runs through the starting section (2.1) and the end section (2.2) of a mixing tube. The two sections form an engagement opening (8) between themselves and are connected to a first holding magnet (11) by an abutment (9). An actuator (6) in the form of an elastomeric bellows which has a chamber (10) is situated on the starting section (2.1) of the mixing tube. The chamber (10) is connected to a valve (16) via a supply line (20) and is loaded variably with compressed air. By deformation of the actuator (6), a clamping element (7) which is connected to the former performs a tilting movement between the abutment (9) and a stop part (19) which contains a second holding magnet (12). The holding magnets (11, 12) lead to exact and reliable clamping of the weft thread (3).

Air spring device

Abstract: The invention relates to an air spring device having a free-standing air spring bellows and an outer guide which is fastened to the air spring bellows by means of an inner clamping ring, wherein the outer diameter of the inner clamping ring is greater than the outer diameter of the air spring bellows in the unpressurized state, and the inner clamping ring generates a radially outwardly pointing encircling bulge in the unpressurized air spring bellows

Collapsible polymeric bellows storage tube

Abstract: A bellows design collapsible polymeric storage tube. The device incorporates separate flexible plastic disks as segregating spacers that are dropped inside the device creating separate spaces for a plurality of items. The spacers lock into the widest part of the bellows securing them in place. The disks are printable/markable for promotional/informative media and labeling. In a first instance of the bellows receptacle, the collapsible bellows tube consists of two threaded ends and two threaded lids. The lids pop open and have their own separate space(s) that also uses a disk to create a separate segregated compartment. When a lid is empty the top of the lid collapses in upon itself thus saving space when the lid is empty and packed away, likewise the body of the tube collapses and expands as it is filled or emptied of the contents inside in order to save space when it is packed away. In a second instance of the present invention, the bellows receptacle uses a pair of segregating discs with each positioned approximate the top and bottom of the bellows receptacle forming closure for said receptacle. Any number of additional discs can be used to create segregated compartments within said bellow receptacle.

Development of a fuel-powered shape memory alloy actuator system: II. Fabrication and testing

Abstract: The second part of this work discusses the fabrication and testing of a fuel-powered shape memory alloy actuator system (FPSMAAS) and its main components. Fuel (propane) is burned in a combustor and its heat is transferred to a working fluid medium, which in turn transfers the heat to the SMA element to drive its martensite-to-austenite phase transformation. For the austenite-to-martensite transformation, the heat is removed from the SMA element by a cooling fluid, from which the heat is then removed via a heat exchanger. The process of implementing the FPSMAAS consisted of three phases of increasing complexity, corresponding to three generations of the actuator system. For the final generation of the FPSMAAS, the SMA element was housed in a rectangular channel, featuring an innovative way of separating the cold from the hot fluid medium that alternately come in contact with the SMA element, in order to minimize the mixing between them. To meet our goal of miniaturization, a multi-channel combustor/heat exchanger and a micro-tube heat exchanger were developed and tested. The final actuator system was composed of pumps, solenoid valves, check valves, bellows, a micro-tube heat exchanger, a multi-channel combustor/heat exchanger and a control unit. The experimental tests of the final system resulted in 250 N force with 2.1 mm displacement and 1.0 Hz actuation frequency in closed-loop operation. The test results for the individual components as well as the final assembled actuator are compared with the results of the numerical analyses conducted in Part I and a good agreement has been demonstrated.

Advanced scroll compressor, vacuum pump, and expander

Abstract: Modifications of a scroll compressor provide a bellows suitable for liquid cooling and a plunger actuated seal for the scroll tips of various equipment. A bellows spans the fixed and the orbiting scrolls and hermetically seals the scroll device. Using two bellows, the present invention allows for liquid cooling of a compressor with an inlet and an outlet to exhaust heated coolant to a heat exchanger. Then the scrolls have a spiral upon a plate that ends in a tip. A seal upon the tip that abuts the fixed scroll upon a biased plunger modifies existing scroll designs to maintain the seal in contact with the fixed scroll. The modifications also provide an improved coating that seals the fixed and orbiting scrolls to each other without the use of epoxy, disassembly, and cleaning.

Flexible conduit element

Abstract: The present invention refers to a flexible conduit element (1) for an exhaust system of a combustion engine vehicle, comprising a helically or annularly corrugated metal bellows member (2), an outer flexible member (4) disposed around the bellows member (2) and the resilient member (5) biasing the flexible outer member (4) towards the metal bellows member (2). In order to improve the absorption of vibrations of a combustion engine, the outer flexible member (4) comprises a reticulated structure.

Apparatus for measuring spectrum of fog drop, and image processing device

Abstract: A device used for measuring spectrogram of fog drop is prepared as setting illumination lamp and camera shooting tube as well as target in camera bellows, connecting computer with camera shooting tube through image collection card and connecting information output-storage unit to computer. The method for processing image collected by said device to obtain parameter of fog drop is also disclosed.

Design of the critical components in the ITER ECH upper launcher steering mechanism

Abstract: The purpose of the ITER electron cyclotron resonance heating (ECRH) antennae located in the upper port launcher will be to stabilize the neoclassical tearing modes (NTM) by driving currents locally inside either the q = 3 / 2 or 2 island. The ITER reference design uses a front steering (FS) concept with the moveable mirror close to the plasma. The FS launcher is capable of steering eight 2 MW beams via two sets of steering mirrors [R. Chavan, M. Henderson, R. Bertizzolo, J.-D. Landis, F. Sanchez, H. Shidara, The ECH front steering launcher for the ITER upper port, this conference. [8] ]. In the adverse invessel operating conditions, reliable operation is required to guarantee the availability of the mirror steering mechanism during the 20-year lifetime of ITER. The dynamic performance and steering accuracy of the mirror system are essential for the localized beam power deposition. In order to increase the steering reliability and accuracy, traditional bearing and push–pull rods are avoided, which tend to introduce backlash or grip. The proposed frictionless and backlash free mechanism design uses elastically compliant structural components to guide and drive the rotating mirror. The actuator system is based on a pressure controlled helium filled bellows array working against a set of preloaded compressive springs. The radiation and temperature sensitive pressure control servovalves are located in the port duct behind the closure plate. Resistance to cyclic fatigue is the critical design requirement for compliant systems. In order to achieve the high reliability, four critical components are identified and described in detail. The bellows, the flexure pivots, the return springs and the spiral cooling tubes are the core elements of the mechanism allowing the controlled rotation of the mirror. Prototypes of the critical components are being tested. Corresponding analytical and cyclic fatigue numerical models of the compliant components are to be validated by fatigue bench tests. The detailed design and the principal tests of the critical components used in the FS mechanism will be presented.

Differential pressure transducer configurations including displacement sensor

Abstract: The present invention pertains to differential pressure transducers. In an embodiment of the invention, a differential pressure transducer includes a transducer housing, a diaphragm, a bellows, and a sensing assembly. The transducer housing, diaphragm, and bellows are coupled to form a pressure chamber. The pressure chamber is separated into two portions by the diaphragm, with each portion arranged to be filled with a process fluid. A pressure differential across the diaphragm causes displacement of the diaphragm. Such displacement is measured by, the sensing assembly and used to calculate the pressure differential between the two process fluids.

Liquid chemical supply system and liquid chemical supply control device

Abstract: The occurrence of fluctuations in liquid chemical during the discharge and intake thereof in a device that employs a liquid chemical supply pump 10 that discharges liquid chemical taken in by means of a change in volume inside a pump chamber 16 that accompanies the displacement of a bellows type partition 14. The amount of fluctuation in the bellows type partition member 14 that accompanies the operation of a discharge side valve 32 will be detected by a displacement sensor 58 . The amount of fluctuation is a parameter that indicates a correlation with the abrupt flow of liquid chemical that accompanies the opening of the discharge side valve 32 . Thus, the amount of fluctuation will be reduced, and the pressure inside a pump chamber 16 prior to the opening of the discharge side valve 32 will be controlled.

Air spring for a vehicle

Abstract: An air spring for a vehicle, in particular for a commercial vehicle, comprising an air bellows (2) which has an axle-side region (8) and a superstructure-side region (10), which regions are movable with respect to each other between a first, adjacent position and a second, spaced-apart position, a plunger (4) which is arranged on the axle-side region (8) of the air bellows (2), a fastening section (16, 24) in order to fasten the superstructure-side region (10) of the air bellows (2) to a support element of the vehicle, and a displacement element (6) which is arranged on the fastening section (16, 24) of the air bellows (2), wherein the displacement element (6) essentially fills the space between the plunger (4) and the fastening section (16, 24) in the first position of the air bellows (2).

Transfer pump with several pistons

Abstract: Transfer pump of the type in which the moving part for pumping is a bellows ( 4 ) that is alternately filled with and emptied of hydraulic liquid at high pressure by a piston ( 1 ) that is driven by a cam ( 2 ), whereby the amount of fuel allowed into the chamber ( 5 ) into which the bellows ( 4 ) moves is determined, upstream, by a solenoid valve ( 8 ) that is driven by the computer for monitoring the engine, characterized by the fact that it comprises at least two pumping units (piston 1 /bellows 4 ) that are supplied by a single intake system ( 6 ) that is common to the units on which the flow-monitoring solenoid valve ( 8 ) is placed and that have a conveyor circuit ( 10 ) that may be unique and common, or specific to each pumping unit.

Substrate treatment apparatus

Abstract: PROBLEM TO BE SOLVED: To provide a substrate treatment apparatus capable of favorably moving up and down a substrate. SOLUTION: Flexible portions 90 are formed at respective tips of a plurality of lift pins capable of moving up and down, and deformed according to the position of a rectangular substrate on which the flexible portions abut. The flexible portion 90 mainly has a base 91 and a bellows 92. The bellows 92 is a cylindrical flexible member formed of a bellows structure 90a. The lift pins 71 are inserted into a cylinder at the base 91, and thereby the flexible portions 90 are mounted to the lift pins 71. Further, each flexible portion 90 is connected to an exhaust line so as to be adsorped by the flexible portion 90. Thus, the flexible portions 90 adsorb the rectangular substrate while being deformed according to the position of the rectangular on which the flexible portions abut substrate when the rectangular substrate is moved up or down. COPYRIGHT: (C)2009,JPO&INPIT

Air spring modular piston

Abstract: A modular piston assembly is associated with an air spring assembly that has a bellows rolling over a surface of the piston assembly. The modular piston assembly includes a first piston portion adapted to fasten to an associated air spring bellows. A second piston portion separate from the first portion, is adapted to fasten to an associated mounting component. Interlocking members are provided to secure the first and second piston portions together, and/or any desired intermediate piston portions. Discrete air reservoirs may also be included in the modular piston assembly to increase the volume of the air spring.

Experimental verification of the axial and lateral stiffness of large W7-X rectangular bellows

Abstract: The WENDELSTEIN 7-X (W7-X) is a super-conducting helical advanced stellarator. W7-X is provided with 299 ports, which connect the plasma vessel with the outer vessel. All the ports are equipped with bellows, which, during bake-out and final adjustment, compensate the relative movements of the vessels. The lateral stiffness which was calculated with the established standard EJMA code [EJMA code, Standards of the expansion joint manufactures association, INC, 25 North Broadway, Tarrytown, NY 10591. [1] ] seemed to be relatively small. This appeared to be not correct in particular for non-circular bellows. The stiffness of rectangular, multilayer bellows have then been re-calculated with the finite element method (FEM) code ANSYS. The maximum difference between the FEM and EJMA code resulted to be up to 250% in particular with movements along the longer side of the bellows. In order to clarify the differences a test-campaign with the largest rectangular bellows was performed. The paper summarises the calculation, describes the test activities, the apparatus and reports the final results.

System and method for supplying chemical, and storage medium

Abstract: PROBLEM TO BE SOLVED: To remove fine particles from chemical by supplying chemical to an intermediate pump which terminates supply of chemical to a processing unit, removing the particles and resupplying chemicals to the chemical processing unit. SOLUTION: In a chemical supply system, chemical is continuously supplied alternately to an application unit 9 from a first bellows pump 2A and a second bellows pump 2B. While one bellows pump 2A (2B) supplies chemical, the other bellows pump 2B (2A) supplies chemicals to a chemical chamber B1, the chemicals of the chemical chamber B1 are circulated in a circulation path 81, and chemical is made to repetitively pass a filter 83. In the filter 83, the fine particles adhere to the filter 83 with intermolecular force, while chemicals are made to pass repeatedly, and the fine particles are removed gradually. COPYRIGHT: (C)2009,JPO&INPIT

Intellectualized online system for testing illuminating quality of headlight of an automobile built from LED

Abstract: A system used for on-line detecting illumination quality of intelligent LED car light comprises industrial control computer, display and operation keyboard. It is featured as connecting a car light model at opening on top of camera bellows, fixing front surface of car light downwards into car light model, arranging image transducer at bottom of camera bellows, connecting each image transducer separately to image collection card being connected to industrial control compute. The method utilizing said system to carry out on-line detection on illumination quality of said car light is also disclosed.

Plastic collapsible bottle

Abstract: Bottle with collapsible bellows ridges (1) is created on the principle of a helix line. The shape of collapsible bellows ridges (1 ) is determined by at least one inter-ridge furrow (2) in the shape of helix or discontinuous helix. In the case of more furrows (2', 2'), these preferably run as a multiple-start helix or as helixes running symmetrically in opposite directions. Preferably two to eight shape depressions (3) are contained, which are running aslope downwards or vertically across the bellows ridges (1) on the collapsible part of the bottle, and in addition to them or instead of them the upper or lower opposite surface (1', 1 ') of bellows ridges (1) is equipped with reinforcing embossed and/or stamped stiffenings (5) in the shape of dimples or projections.

Lid for a spray cup, method for releasing a bellows in a spray cup and a flange for placement between a spray cup and a lid.

Abstract: A lid for a spray cup (14), provided with a substantially flexible bellows (12), which extends between the lid (3) and liquid in the spray cup (6), at least when the lid (3) is placed on a spray cup at-least partly filled with liquid, and a retaining element (5) for at least partly retaining the bellows in the direction of the. lid, wherein the bellows can be released during and/o after the placement of the lid on the spray cup.

Dispensing Tube For A Powdered Drink Mix

Abstract: An assembly for adding powder to a bottle of liquid product is disclosed herein. The assembly includes a section of bellows extending along an axis between a first end and a second end. The section of bellows is operable to collapse along the axis in response to an axially-directed force. The assembly also includes a top neck portion unitary and integrally-formed with the section of bellows at the first end and defining a first opening. The assembly also includes a cap releasable engageable with the top neck portion to selectively close the first opening. The assembly also includes a bottom neck portion unitary and integrally-formed with the section of bellows at the second end and defining a second opening. The bottom neck portion defines inwardly-facing threads for engaging outwardly-facing threads on the neck of a bottle. The assembly also includes a membrane disposed across the axis between the bottom neck portion and the section of bellows. The assembly also includes a first product disposed in the section of bellows between the membrane and the cap for mixing with a liquid product in the bottle. The membrane is burstable in response to the collapse of the section of bellows to release the first product through the bottom portion. The first and second openings are substantially the same size.

Dual-layer bellows type exhaust apparatus

Abstract: The utility model relates to a dual-layer bellows type exhaust apparatus used in coal mine rubber-tyre vehicle. Main structure includes a water line bellows, a gas line bellows, a flange plate and a nozzle seat. The utility model adopts a dual-layer internal-external bellows type design and water circulating cooling structure. A flow water cooling pipe is added outside the exhaust pipe and folds the entire exhaust pipe inside. Both pipes are of circular cylindrical curved bellows structure, which increases radiation area. The bellows has elasticity, toughness, flexibility, and forms a soft connection, which eliminates internal stress and has cushion effect when exhausting gas. The apparatus has reasonable structure and good gas-exhausting water-cooling effect, reduces the gas exhausting temperature, makes the gas exhaust of the engine safer, protects the engine part, and is the ideal exhaust apparatus of coal mine rubber-tyre vehicle and other vehicles.

Bellows tube structure

Abstract: PROBLEM TO BE SOLVED: To secure a space inside a tube when the tube is crushed and deformed in a radial direction even if a protector is not mounted on the tube. SOLUTION: Ribs 12 (deformation suppressing parts) which are integrally and protrusively formed at the outside in the radial direction of the tube 10 are arranged at an outer periphery of the tube 10 having a bellows part 10A. Thus, a deformation amount can be suppressed when the tube 10 is crushed and deformed in the radial direction. Since thickness in a tangent direction of the ribs 12 with respect to the tube 10 in projection positions of the ribs 12 is set to be larger than twice the thickness of the tube 10, the space can be secured inside the tube 10 even if the tube 10 is crushed and deformed in the radial direction to thickness of the ribs 12. COPYRIGHT: (C)2009,JPO&INPIT

Arrangement for bellows as dust boot at air spring or air spring absorber, has free standing cross layer bellows, and other bellows that is fixed with its ends at exterior side of cross layer bellows of roll folding area

Abstract: The arrangement has a free standing cross layer bellows (4). Another bellows (7) is fixed with its ends (9) at an exterior side (10) of the cross layer bellows of the roll folding area from the outside. The fixing of the latter bellows is carried out at the cross layer bellows in force-fit and form-fit manner. The fixing of the latter bellows is carried out by an inner ring and an outer ring (13).