Abstract: A telescopic bladder with a noise reduction structure is provided. The telescopic bladder has an opening. The telescopic bladder includes a top plate and a plurality of connected annular bodies extending from a periphery of the top plate toward the opening. The annular bodies have a continuous wavy cross-section. An inner surface of at least some of the annular bodies is formed with at least one protrusion. When the telescopic bladder is applied to a pillow, even if the telescopic bladder is inflated or deflated in the middle of the night, there will be no annoying noise, thereby improving the sleep quality effectively.

Abstract: A bleed valve for use in a gas turbine engine of an aircraft includes a high-pressure cavity coupled to a valve housing, which includes a valve seat configured to be sealed by a system poppet. The system poppet is operably coupled to a shaft that is itself coupled to a movable end of a bellows, which is positioned within the high-pressure cavity. The opening and closing of the valve is controlled by at least one cavity air port that is configured to inject a first fluid into the high-pressure cavity, thus compressing the bellows, and by a servo air port that is configured to inject a second fluid directly into the bellows, to expand it.

Abstract: In a motor generator pulley 122, a mechanical clutch 105 and a switching unit 132 are provided such that the mechanical clutch 105 is interposed between a first power transmission unit 104A and a second power transmission unit 104B and can transmit power even when an engine 102 serves as a drive element and a motor generator 103 serves as a drive element and when the motor generator 103 serves as the drive element and the engine 102 serves as the driven element, and that the switching unit 132 can switch, when at least one of the engine 102 and the motor generator 103 serves as a drive element, the mechanical clutch 105 so as to inhibit the engine 102 and the motor generator 103 from being connected to each other.

Abstract: A drive unit with a radial interior drive element and a radial exterior drive element as well as a free-wheel arranged between the interior drive element and the exterior drive element. The interior drive element and the exterior drive element are axially displaceable in reference to each other.

Abstract: A guiding device for a metal bellows (3), which on at least one bellows end (37) comprises an end body (39) movable along the wall of a housing (10) during the expansion and contraction of the bellows (3), a guiding element being provided between said end body and the housing (10), is characterized in that the guiding element is formed by a plurality of separate guiding bodies (49) that are disposed in intervals from each other on the circumference of the end body (39).

Abstract: In a fluidic drive for disposition between two components which are movable relative to each other comprising a hollow body with a duct for supplying fluid to, and discharging it from, the hollow body wherein the hollow body consists at least partially of a bellows structure, non-resilient ring elements extend around the hollow body in each of its pleats and a connecting structure extends at least at one side of the hollow body and interconnects the non-resilient ring elements.

Abstract: A welding bellows capable of absorbing torsion is equipped with a bellows core made from thin metal plates wherein the centers of the inner diameter and the outer diameter are made eccentric to each other. The metal plates are combined so as to make it possible to absorb torsion with respect to the center axis.

Abstract: The invention relates to a bellows, in the bellows body of which are provided supporting frames which are welded to the outer pleats of the bellows body. The connection between the outer pleats of the bellows body and the supporting frames is formed by a high-frequency welded joint. The bellows according to the invention can be produced in a particularly economical manner and, if required, the bellows body can also be coated with PVC if the supporting frames--as usual--are produced from rigid PVC.

Abstract: A welded bellows is formed by welding together a stack of annular elements such that spacer rings are located between adjacent elements at the inner and outer diameters and are the locations for the welds. The spacer rings eliminate very small clearances/contact between movable members which can be the locations for stress risers in the presence of dirt.

Abstract: A metal bellows core is comprised of a plurality of resilient annular metal diaphragm members which are brazed together. A method for fabricating a metal bellows core is comprised of steps including brazing the metal diaphragm members together simultaneously in a furnace. An apparatus for fabricating a metal bellows core is comprised of means for positioning, coaxially aligning and compressing the diaphragm members and brazing filler material members for brazing.

Abstract: In the European patent application publication EP OS O No. 102 441 a high pressure pump is shown which uses tapered rings (disc spring derivatives) which are clamped together as a pump chamber. The clamping rings required cutting into sections which is expensive and time consuming. The present discoverings now show that the friction at compression of the coned rings was very large. The present invention now discovers that radially flexible ring portions should be provided to the coned ring portions in order to eliminate the friction and to reduce the time and cost of the production of the pump arrangement. The invention further provides U-type pump elements which eliminate the clamping rings. A second pressure led into the space in the housing which surrounds the pump elements makes it possible to increase the pressure in the pump, for example, to double the pressure.

Abstract: A pump has in a housing a revolvable shaft which drives a piston stroke guide body. Drive pistons are provided with piston shoes which run on the guide face of the piston stroke guide body and drive fluid supply pistons of smaller diameter. The pump preferies a fluid separator between lubricating and non-lubricating fluid, like for example, between oil and water, whereof one of the fluids flows through an inner chamber which is provided with inlet and outlet valves while the outer fluid acts in an outer chamber which is open toward the cylinder wherein the fluid supply piston reciprocates. Dead space fillers are provided to prevent losses by compression of fluid and seal means are assembled to prevent leakage of fluid from one into the other of the chambers. The fluid separator may be compressible and expandable within the plastic deformable range of the material whereof it is made.

Abstract: An arrangement which includes a coned ring forms with the coned portion an interior space. The interior space decreases and increases its volume, when the coned portion of the ring is compressed and de-compressed. The coned ring has a radial outer portion and a radial inner portion. The radial inner portion forms a bore. The radial outer portion is provided with a seat face portion. The seat face portion contacts and bears a respective portion of a body, which may be a second coned ring, a thrust body or an outer ring. The arrangement is utilized to center a coned ring relative to a neighboring body or to provide and effectively seal a working chamber for the reception and expulsion of a fluid.

Abstract: In a fluid pump or motor improvements are provided to the piston shoes therein to permit a higher pressure in the respective device. Other improvements are done to the hydrostatic bearings in radial piston or radial chamber type fluid motors and pumps. A further arrangement is, that plural pistons are applied to permit the use of two different fluids in the respective device. This leads also to the application of disc springs and their modification in a pump or motor to make the pumping of non-viscous fluids like water possible at very high pressure. Motors are provided with arrangements to permit them to drive and to carry simultaneously or to have hollow shafts, whereby improved and novel machines and vehicles are obtained.

Abstract: In the European patent application publication EP OS No. 0 102 441 a high pressure pump is shown which uses tapered rings (disc spring derivatives) which are clamped together as a pump chamber. The clamping rings required cutting into sections which is expensive and time consuming. The present discoverings now show that the friction at compression of the coned rings was very large. The present invention now discovers that radially flexible ring portions should be provided to the coned ring portions in order to eliminate the friction and to reduce the time and cost of the production of the pump arrangement.

Abstract: In a fluid pump or motor improvements are provided to the piston shoes therein to permit a higher pressure in the respective device. Other improvements are done to the hydrostatic bearings in radial piston or radial chamber type fluid motors and pumps. A further arrangement is, that plural pistons are applied to permit the use of two different fluids in the respective device. This leads also to the application of disc springs and their modification in a pump or motor to make the pumping of non-viscous fluids like water possible at very high pressure.

Abstract: A bellows including a reenforcement member having an edge attached to each side of the bellows body to eliminate distortion and damage upon the application of lateral forces. The reenforcement member has a central opening so as not to obstruct the movement of air within the bellows.

Abstract: A crossed-bellows controller which includes four bellows arranged in cruciform. The bellows are surrounded by a movable baffle ring which serves as a baffle plate for a nozzle. A frame-shaped cage is provided within the baffle ring, with the cage being connected through one pair of bellows with a central member. The baffle ring is connected with the cage through the other pair of bellows.

Abstract: A variable-volume receptacle, especially for use as a compensating receptacle in heating systems. The receptacle includes two membrane-like sheets of rubber or synthetic material; the sheets have the same surface areas, and are placed against one another. The edges of the sheets are bound together by a peripheral U-shaped strip which is attached to both sides. The novel edge connection is considerably more durable than the conventional overlap connection, and as a result of not being susceptible to the otherwise constant danger of tearing due to having been folded, the connection also has a much longer life than do the heretofore known overlap connections.

Abstract: Flexible welded metal bellows comprising a plurality of diaphragms comprising flexible metal annuli free plates or rings having similar inner and outer diameters, alternate pairs of said plates having their outer and inner peripheries, respectively, welded to each other to form a fluid-tight connection therebetween. The invention comprises interposing and welding a metal annuli spacer plate or ring between at least one adjacent pair of said flexible free plates to space the free plates from each other and to prevent or reduce the pressure contact between the adjacent welds when the bellows is retracted.

Abstract: A volume-type incentive spirometer for respiration therapy is disclosed. The spirometer includes a central tubular support on which is mounted a collapsible bellows-like chamber. Fluid communication is provided between the support and the interior of the chamber and, further, between the support and a patient. The collapsible chamber includes a top plate by which the chamber is mounted on the support, a bottom plate for biasing the collapsible chamber to an open position, and an intervening flexible, readily collapsible side wall joining the top and bottom plates. The collapsible chamber or the collapsible chamber and support member may be disposable. The spirometer provides respiratory exercise so that alveolar inflation is assured.

Abstract: Isothermal chamber comprising deformable walls and acting as a heat exchanger.It is constituted by two walls 3,3a of complementary shape defining between them an enclosure 4 containing a gas, the said walls having a deformable zone 5 and a rigid zone 6 providing a variable capacity in heat exchange with an auxiliary fluid, in such a way that the gas contained in the enclosure will undergo substantially isothermal transformations.The invention is employed for the construction of gas compressors and heat engines.

Abstract: A diaphragm consisting of multiple arches configured such that radial compliance is increased and pressure responsive radial compression loading will approximate radial tension loading resulting from deflection of an associated pressure sensor mechanism. On the pressure receiving side of the diaphragm, a broad shallow convex section extends between two concave sections of tighter curvature. The portions of the concave sections remote from the convex section each extend to a substantially cylindrical configuration. A sharp convex bend extending to a flat radial flange provides an attachment edge with minimum attachment stress. A method of forming such a diaphragm to insure uniform wall thickness by allowing maximum lateral migration of the diaphragm sheet is also disclosed.

Abstract: A fluid operated diaphragm assembly having a pair of diaphragm members each provided with annular inner and outer peripheral portions separated from each other by an annular fluted portion. A ring member is disposed between the outer peripheral portions of the diaphragm members and is secured respectively thereto whereby a chamber is defined between the diaphragm members inboard of the ring member. The diaphragm members each has a natural tendency to maintain its respective inner and outer peripheral portions coplanar with each other whereby the inner peripheral portions are normally spaced from each other a distance that is approximately the same dimension as the thickness of the ring member.

Abstract: A drum for producing blanks for car tires of rubber with straps wherein the drum consists of coaxial rings movable axially relatively to each other and having supporting surfaces for the beads of tire blanks. According to the invention each ring has an annular groove containing a ring insert of an elastomeric material with a high E-modul. The insert is radially stretchable and consists of a cylindrical supporting part and a disk part firmly connected therewith. The disk part in cross-section has a toggle-like bend and is supported upon the base of the groove. The supporting part is fixed to a limiting flange.

Abstract: An actuating mechanism for moving an indicator, an operational tool or a structual component with a high degree of precision over precisely predeterminable distances to desired points of operation, which comprise a shaft, slidably mounted upon said shaft in end to end relation a sequence of interconnected actuating components of selectively variable length axially of said shaft each having limit stop means for positively and precisely predetermining its conditions of minimum and maximum length and thus its possible increment in length, said increments being arranged to differ for the individual components, means at one end of the sequence of components on said shaft for positively blocking movement of said sequence of components in one direction while leaving the opposite end free to move on said shaft in response to increases in the axial length of any one of said components, means selectively operable to actuate said components individually so that they assume either their condition of minimum length or the