Showing papers on "Bellows published in 1990"

Ultrasonic transducer device for treatment of living tissue and/or cells

Abstract: The invention contemplates an improved body-applicator unit forming a component of an ultrasonic bone-therapy system exemplified by the disclosure of copending patent application Ser. No. 247,105, filed Sep. 14, 1988 now. U.S. Pat. No. 5,003,965. The improvement features transducer suspension from the rest of the applicator unit via a molded sylphon-bellows element of softly compliant elastomeric material, wherein the transducer is a flat disc, retained as the outer closure wall of the elastomeric bellows, in such manner as to be surrounded by a flexible gel-retaining circumferential lip formation of the bellows.

Aspirator without partition wall for collection of bodily fluids including improved safety and efficiency elements

Abstract: An aspirator including a container having an internal chamber with the chamber having a suction tube connected to a closed bellows within the chamber for creating a vacuum, and also having a patient tube for insertion into the body cavity of a patient for sucking removal of mucus and other excess bodily fulids by the vacuum. The aspirator further includes an injection port by which mucus may be removed from the container and a pressure relief valve to permit air to escape from the container as the flexible bellows expands to its equilibrium state. The suction tube further includes a moisture trap to occlude gaseous flow to the mouthpiece in the event moisture enters the suction system. The apparatus further includes a clip to occlude fluid flow through the patient tube when the operation is completed. The patient tube may include a Yankauer tip or be cut with an oblique angle adjacent its tip. The bellows cap may be attached to the underside of the top of the container in one of several ways.

Mechanical face seals

Abstract: A mechanical face seal has a first seal face member (10) mounted in fixed rotational and axial relationship and sealed with respect to a housing (13), and a second seal face member (21) mounted with respect to a shaft (20) by means of an elastomeric bellows unit (25), the bellows unit (25) being axially compressed so that it urges the second seal face member (21) into sealing engagement with the first seal face member (10); the elastomeric bellows unit (25) being formed from an elastomeric composition with reinforcing fibres embedded therein, the reinforcing fibres being orientated axially of the bellows unit (25).

A seat for vehicles having an air conditioned passenger compartment

Abstract: The seat cushion of the seat is provided with a first chamber (12) which receives conditioned air from the air conditioning system through an inlet duct (11). A further chamber (16) disposed in the seat back (9) is connected to the chamber (12) through a bellows coupling (19), and is connected to an outlet (20) for directing air towards the rear passenger. Each chamber (12, 15) includes a cavity (13, 17) for heat exchange with the body of the front passenger, and means for adjusting the rate of flow of air.

Dispensing apparatus for frozen product

Abstract: Frozen product dispensing apparatus comprises a cylindrical housing (14) for locating a cylindrical deformable container (26) of product. A plunger (16) bears on the container to discharge the product from the container (26) and the plunger is driven by compressed air either by direct pressure on the plunger (16) or by the use of a bellows which engages on the plunger. The housing (14) has a door (22) through which the product passes to an outlet valve (29) and the door may be opened to replace the container (26).

Vapor recovery nozzles and sub-assemblies therefor

Abstract: A vapor recovery nozzle, employed in minimizing atmospheric pollution by fuel vapors is described. The nozzle comprises a bellows which is compressed against the fill pipe of a vehicle fuel tank during discharge of fuel therein. The bellows surrounds a nozzle spout to define a vapor return flow path which extends through a nozzle body. The body of the nozzle is compositely formed by a body member and a vapor path cap which compositely define the vapor return flow passage. Flow of fuel is controlled by a control valve which may be opened, or maintained opened, by an operating lever only when a trip mechanism stem is latched in an operative position. A mechanical interlock prevents latching of the trip mechanism stem unless the bellows is compressed in sealing engagement with a fill pipe. When the bellows is so compressed, the trip stem is latched. If the level of fuel in the fill pipe covers the end of the spout, vacuum actuated means unlatch the trip mechanism stem. If the pressure in the vapor return flow path rises to a level indicating a blockage in return flow, the trip stem is also unlatched. A vapor valve is provided in the bellows to prevent the escape of fuel vapors when the nozzle is in a rest position. Angular relationships of the bellows and the spout facilitate obtaining a seal with a fill pipe. A groove is formed in the spout outwardly of and adjacent the vapor seal so that the vapor seal maintains its integrity in the event the spout is broken when inserted in a fill pipe. A trip mechanism sub-assembly, a spout sub-assembly and a bellows sub-assembly facilitate rebuilding, as well as the original assembly, of the nozzle.

Gas turbine engine sensor probe

Abstract: A high temperature thermocouple sensing apparatus (48) is readily removable from a gas turbine engine (10). The thermocouple extends through aligned openings (31, 34) in inner and outer housings (16, 12) and seals both openings through use of a pair of spherical sealing elements (62, 64) and a spring seal bellows (82) urging a seat (92) into sealing engagement with one sealing element (64) and urging the other sealing element (62) into engagement with the inner housing.

System and method for cooling a submersible electric propulsor

Abstract: Both a closed system and method for cooling a submersible propulsor unit for a water vehicle is provided for a unit of the type that includes a submersible motor having a shaft connected to a propeller, and a housing containing the motor. The system comprises a motor cooling assembly that includes a shaft seal for conducting the shaft outside of the housing while preventing ambient water from entering the housing, a liquid contained within the housing for cooling the motor, a heat exchanger for thermally connecting but mechanically isolating the liquid from the ambient water, an impeller (102) for recirculating the liquid through both the motor and the heat exchanger, and a bellows (128) for equilibrating any pressure differentials between the cooling liquid and the ambient water. A filter assembly (129) mounted within the bellows relieves any pressure differential that is not relieved by the bellows when ambient water pressure is greater than that of the cooling liquid in the housing. The filter assembly removes particulate debris from the ambient water before admitting it into the housing, to relieve the pressure differential, and may further include an osmotic membrane for preventing dissolved salts in ambient water from entering the cooling liquid.

Internally pressurized bellows pump

Abstract: A bellows-type pump has a plastic bellows interiorly supported by interior pressure. The interior pressure is supplied by a fluid source which passes through a pressure regulator to control the amount of interior pressure exerted on the bellows. A fiber-optic leak detector can be inserted into the plastic bellows to detect the leakage of process fluid therein.

Distributing device for liquid preparations

Abstract: In a distributing device for liquid preparation composed of three parts forming a single unit consisting of a receptacle, an intermediate part of a flexible texture forming a bellows fixed on the neck of the receptacle and an upper part mounted on the top of the bellows forming a reservoir finished by a nozzle closed at its ends. The intermediate part is composed of a flexible sleeve formed of several concentric rings joined together, inside which are arranged two impervious membranes separated by a rigid member having two sharpened extremities arranged vertically, perpendicular to each of the two membranes.

Bellows-type dispensing pump

Abstract: A microprocessor controlled bellows-type pump system for the precise and accurate pumping and dispensing of fluids. The pump comprises a longitudinally contracting bellows which is supported from warping under fluid pressure by a support bushing in contact with the inside folds of the bellows. A stepper motor drives the bellows position via a lead screw. A system of four valves: a dispense valve, shut-off valve, vent valve, and suck-back valve, control fluid routing within a manifold. One or two pressure transducers allow the microprocessor to control valve positions and stepper motor turning for well behaved dispensing operations.

Dispenser with pump device

Abstract: A dispenser has a pump device (4) with two hollow pistons (9, 10) which are displaceable coaxially with respect to each other, and wherein one piston is seated at the pump base while the other piston is seated on an actuating button (30) The button continues into a mouthpiece (29) and is surrounded by a bellows (B) which provides an axial restoring force The bellows (B) forms a piston ring (K) at a distance (A) from the upper end of the actuating button-side hollow piston (9), and slides on a wall surface (b 9') of the button side hollow piston

Flexible pipe component for exhaust conduits of internal combustion engines used on vehicles

Abstract: A flexible pipe component for exhaust pipes of internal-combustion engines in motor vehicles is specified, which has a bellows (1), which consists of metal and has cylindrical connecting ends (2, 3), and a mesh hose (11), which directly surrounds the bellows (1) and consists of metal wire, these parts being fixedly connected to one another at the ends to form the connecting ends (2, 3) of the pipe component, inside in each case one cylindrical supporting ring (7, 8). In this arrangement, it is provided that at least one flexible damping element (12, 23, 24, 26, 32, 33, 37, 38, 39, 40, 41, 44, 50, 52, 60, 64), which originates from one of the connecting ends (2, 3) of the pipe component and furthermore moves relative to the mesh hose (11), is fitted in contact with the first mesh hose (11).

Temperature compensatible pressure monitor and sensor construction

Abstract: By providing pressure-responsive switch-actuation means constructed for being substantially unaffected by temperature changes, a pressure sensor is attained which is capable of monitoring pressure levels with precision, regardless of the ambient temperature to which the system is subjected. By employing temperature insensitive material to effectively compensate for temperature changes incurred by the remaining sensor components, the actuation control assembly of the sensor is capable of achieving precision monitoring of desired pressure levels regardless of changes in the ambient temperature to which the monitor assembly is exposed. In one preferred embodiment, the pressure sensor of the present invention incorporates a uniquely constructed, machined bellows which further enhances and provides precision pressure sensing capabilities.

Method for treatment of wells

Abstract: The invention relates to a valve suitable for use in high-pressure environment for transmitting a treatment fluid from exterior of which is affected by a pre-charged compression gas which keeps the bellows in contracted position and a piston preventing fluid communication between the tubing and the casing through the valve body. The interior of the bellows is affected by the tubing pressure, one half of which is transmitted to the bellows through radial sensing ports, and the other half of which is transmitted to the bellows through the bottom of the piston. When the pressure inside the bellows exceeds the pre-charged pressure, the bellows expands, pulling the piston upwardly and opening fluid communication from the tubing into the casing through the valve. A controlled-size fluid outlet port allows the tubing fluid to exit into the casing.

Positive pressure closure lid for beverage can

Abstract: A positive pressure closure lid has a single stroke bellows pump for pressurizing the internal open space of an aluminum beverage can. The pressure cap has a bifurcated seal which curls around and tightly engages opposite sides of the rolled top rim of the beverage can. As the bellows pump is pressed downwardly, a bellows cap is held in the collapsed position by a pair of resilient snap retainers. The slight pressurization provided by the single stroke bellows pump retards the release of carbonated gases from the beverage, thus preserving the flavor of the beverage after the pressurized can has been opened. Increased internal pressure provided by the bellows pump reinforces the sealing engagement of an internal annular flange portion of the bifurcated seal.

Garment drying apparatus

Abstract: A device for drying garments comprises a bellows tube having a plurality of apertures throughout its length. The tube is used to support a garment and carry heated air from an air heating means to the inner surface of the garment.

Pneumatic apparatus for lifting and lowering toilet seat

Abstract: A pneumatic apparatus includes a treadle bellows fluidically communicated with a follower bellows of which an upper bellows flange is secured with a toilet seat and a lower bellows flange secured on a toilet bowl, whereby depressing the treadle bellows compresses air into the follower bellows for expanding the follower bellows, the toilet seat and cover will be lifted, and upon a releasing of the treadle bellows the air in the follower bellowers will be sucked into the treadle bellows to contract the follower bellows to lower the seat and the cover for relevant uses.

Hydraulic tightening apparatus

Abstract: A hydraulic actuating element particularly for a belt tightener having a pressure chamber arranged behind a piston guided in a cylinder, a reservoir separated from the pressure chamber by a check valve, the cylinder and the reservoir being completely oil filled, the outside of the reservoir being defined by a bellows, a leakage gap between the piston and the cylinder being open towards the reservoir and at its one side towards the pressure chamber, whereby a compression spring acts to urge apart the piston and cylinder, characterized in that the reservoir (13) surrounds the cylinder (2) and being limited by the bellows (12) at its outside, the bellows (12) being sealingly secured at one end to a base element (10) secured to the cylinder (2) and at its other end to a base element (11) secured to the piston (1), and that the leakage gap (3) at its other side (17) is externally shielded by the bellows (12) and open to the reservoir (13).

Experimental Investigation of a Flexible Bellows Heat Pipe for Cooling Discrete Heat Sources

Abstract: A computer model was developed to aid in the design of a flexible bellows heat pipe for cooling small discrete heat sources or arrays of small heat sources. This model was used to evaluate the operational characteristics and performance limitations of these heat pipes and to formulate and optimize a series of conceptual designs. Three flexible bellows heat pipes approximately 40 mm in length and 6 mm in diameter were constructed and tested using three different wick configurations. The test pipes were found to be boiling limited over most of the operating temperature range tested. Heat fluxes in excess of 200 W/cm{sup 2} were obtained and thermal resistance values of less than 0.7C/W were measured. Although the computer model slightly underestimated the experimentally determined transport limit for one of the wicking configurations, the remaining transport predictions were consistently within 8% of the experimental values.

Tire valve and pressure gauge

Abstract: The combination tire valve and pressure gauge of the present invention is formed to be substantially the same size as current tire valve stems, such that it may be used as a replacement part therefore. The device includes a pressure sensitive bellows disposed within the stem, the movement of which is counteracted by a calibrated spring. Movements of the bellows, caused by changes in the tire pressure, are mechanically translated to a rotary motion of a pressure indicator. A window is formed in the tire stem to permit viewing of the pressure indicator, whereby different numerals corresponding to different tire pressures become visible in the window upon rotation of the indicator which is caused by movement of the bellows. An air channel is formed through the device to permit air to be pumped into the tire. A rotary indicator having an internal spiral groove rotates upon a driving rod formed with projecting driving pin members that project into the spiral groove to cause the rotation of the indicator.

Sealing bellows arrangement for a transmission joint

Abstract: A transmission joint has a joint body integrally connected to a first shaft and delimits a cavity (14), open at its end opposite the first shaft. Inside is formed at least one pair of running tracks between which is received a running element connected to a second shaft. A bellows seals the cavity, and a first end of which is connected to the body and the second end of which is connected to the second shaft. The axial free end edge of the joint body which delimits the opening of the cavity is equipped with a cap piece of a complementary shape which extends axially from the edge towards the second shaft, and the first end of the bellows is fixed to the cap piece.

Interlock feed-through and insulator arrangement for plasma arc industrial heat treat furnaces

Abstract: An industrial electrical, vacuum furnace for ion processing of work is provided with an improved feed-through interlock and insulator arrangement. A sealed interlock chamber on the furnace door is in fluid communication with the furnace's heat treat chamber. A bellows outside of the interlock chamber is in fluid communication therewith. When a vacuum is drawn in the heat treat chamber, the bellows distends into a collapsed position to provide a firmly clamped electrical connection with the feed-through which extends through the door into the interlock chamber. The feed-through is thus pinned by the bellows at one end and a V-shaped pulley guide arrangement within the furnace controls thermal distortion of the feed-through. The insulator arrangement includes a plurality of interlocking, ceramic caps or spacers which are stacked one on top of the other to define tortuous paths or gaps therebetween which prevent electrically conductive material deposited thereon during the ionizing process from establishing an electrically conductive path along which or as a result thereof an ion glow discharge or arcing or short circuiting could occur.

Suction type sheet feeding device

Abstract: A suction type sheet feeding device which attracts an uppermost sheet of a sheet stack to a suction cup by a negative pressure, and transfers the attracted sheet to a predetermined position. For producing the negative pressure, a bellows or accordionlike enclosure is employed. In accordance with axial shrinkage and expansion of the bellows, the negative pressure is produced. The bellows is in fluid communication with the suction cup. Improvement is also made on a cleaning arrangement for cleaning the suction cup, and on the structure of the suction cup unit.

Vibration isolating support apparatus

Abstract: A vibration isolating support apparatus comprises an air spring in the form of the bellows and a multiple laminated rubber assembly. The air spring and the multiple laminated rubber assembly are vertically stacked and integrally connected each other. The multiple laminated rubber assembly is composed of a plurality of stacks of a plurality of laminated rubbers and a plurality of stabilizing plates which are inserted between and connected to the upper and lower ends of the adjacent laminated rubbers in the stacks.

Target bubble generation and target shooting system

Abstract: Target bubble generating and target shooting systems (50, 50A, 50B, 50C) are disclosed employing a target bubble generator housing (59), a pair of left and right actuating handles (51, 55) pivotally coupled at their front ends of the left and right vertical edges of the housing (59), and a bellows assembly (116) positioned intermediate the left and right handles (51, 55) and coupled to the latter at the approximate midpoints thereof. The target bubble generating housing (59) includes a torus-shaped reservoir (81) and a vertically reciprocable bubble wand (98) having a film-forming elliptical ring structure (101) including upper and lower serrated arcuate edges (102, 104) of truncated triangular cross section to minmize disturbance of the soapy fluid in the reservoir (81) as the bubble wand (98) exits the fluid. The bellows assembly (116) generates three positive pressure airstreams during compression--one to lift the wand (98) out of the film-forming solution, one to strip the soapy film from the wand (98) to form and project target bubbles (60), and one to actuate an audible sound generator (127). During expansion, the bellows assembly (116) creates a negative pressure condition which serves to affirmatively retract the bubble wand (98). The twin actuating handles (51, 52) which are manually manipulated to compress and expand the bellows (58) serve as water ejectors capable of projecting one or two high pressure water stream (61) along parallel, convergent or divergent trajectories to enable shooting down target bubbles (60).

Doser-dispenser for at least one pasty and/or liquid product

Abstract: In the disclosed doser-dispenser, the doser piston (28) is carried by a first control tube (2) and the valve (32a) forming with the central passage (32b) of said piston (28) an intake valve (32) is situated on the side of the supply chamber (25) and is carried by a second control tube (35) guided in the first tube (2) and extending beyond the lower end of the latter. Each tube (2, 35) is surrounded by and integral with a bellows (6, 38) of which the inside is connected permanently to the outside atmosphere, the top end of the bellows being fixed either to housing (3) or to the lower end of the first tube (2). The second tube (35) with its intake valve (32a) is controlled outside of the housing (3) by means of the piston (36) of a jack.

Soft touch door handle

Abstract: A recess is formed in the outside of the door and a fluid filled bladder such as a tubular hose is mounted in the recess. The bladder has an integral bellows portion formed on the end thereof which is distended from the bladder when pressure is imposed thereon by the vehicle user. A linkage is operably connected to the bellows portion of the bladder and adapted to release the door latch upon distention of the bellows portion from the bladder.