Abstract: Pump actuator assembly for use in operating a pump for supplying intravenous liquid to a patient which comprises a housing having a sealed chamber therein with a portion thereof being covered by a flexible membrane. A plunger is mounted in the housing so that a portion thereof is disposed in the sealed chamber for movement between innermost and outermost positions. A constant quantity of liquid fills the sealed chamber. A booth encloses the portion of the plunger disposed in the fluid. A liquid-tight seal is provided between the booth and the housing to permit the plunger to be moved between the innermost and outermost positions so that the flexible membrane can be caused to move between extended and retracted positions.

Abstract: An improved diaphragm-type antidrip valve including a valve body defining an annular valve chamber having a fluid inlet and an axial fluid outlet defined by a centrally located valve tube with a diaphragm element having its peripheral portion held in sealing engagement against the outer end of the valve chamber by an end cap and its front face disposed for sealing engagement with the open end of the valve tube, wherein the diaphragm is formed with a centrally located button projecting axially from its rear face and received and radially supported in a socket in a valve follower slidably mounted in the end cap and biased towards closed position by a compression spring and the end cap including an annular contoured ramp presenting a concave seat adjacent the effective outer periphery of the diaphragm for radially and axially supporting the diaphragm in its open position.

Abstract: A master cylinder reservoir includes a cylindrical body having an open upper end. A cap is fitted on and removably secured to the body, the cap engaging the open end of the body at a lower end portion thereof. The cap has a mounting portion formed adjacent to the lower end portion thereof. The mounting portion defines together with the upper surface of the open end of the body a circumferential space. The mounting portion has a first surface disposed in opposed spaced relation to the upper surface of the open end of the body. The mounting portion has a second surface disposed in opposed relation to the outer surface of the upper end of the body. The outer surface of the upper end is spaced from the second surface adjacent to the upper surface of the body to form a circumferential recess. A diaphragm received in the cap and having a peripheral portion received in the circumferential space and held between the first surface of the mounting portion and the upper surface of the open end of the body.

Abstract: In a compressor which includes an upper and lower head portions and an interposed diaphragm, provisions are made for increasing the service life of the diaphragm by reducing the incidence failure of the diaphragm due to fretting products and airborne contaminants, which collect at the outer edge of the diaphragm which results in stress concentrations at the outer edge of the diaphragm, and specifically by providing a plurality of concentric grooves in the upper head of the compressor to remove the fretting products and gas borne contaminants from build up at the outer edge of the diaphragm.

Abstract: A pressure responsive device suitable for high pressure hydraulic applications has a formed metal disc or diaphragm adapted to move from an original dished configuration toward an inverted dished configuration with snap action in response to the application of a selected fluid pressure. Support means of selected surface radius extend into the space defined by the original dished configuration of the diaphragm to intercept and limit such diaphragm movement to prevent damage to the diaphragm under the applied pressure and to limit stresses in the diaphragm material particularly adjacent to the periphery of the dished part of the diaphragm for improving reliability and service life of the device.

Abstract: A pressure regulator base has a rim staked over the flange of a pressure regulator cover, and a compression ring concentrates the clamping effort of the cover on a circular area of the pressure regulator diaphragm sealing region.

Abstract: A pneumatic booster device having an elliptical housing is formed of two stamped metal sections having mating flange and opening portions, the two sections being joined in a simple, effective, easily diassembleable manner without the use of standard nut and bolt fasteners.

Abstract: In a piston diaphragm pump, comprising housing portions clamped together by clamping bolts, a diaphragm, sealingly clamped between adjacent housing portions for separating a feeding chamber from a working chamber, and a reciprocating piston acting in said working chamber filled with hydraulic medium for deflecting the diaphragm to change the volume of the feeding chamber, there is provided at least one supporting member to be screwed to a respective supporting thread in one of said housing portions so as to project towards another housing portion by a distance depending on its screwed position and to abut in the assembled position against an abutment surface on said other housing portion.

Abstract: An air inlet valve for admitting air to the milk drain conduit of a milking cup or collector piece includes a housing secured to the milking cup or collector piece, a diaphragm clamped within the housing, and a valve poppet secured to the diaphragm so as to project from one side thereof. The valve poppet cooperates with a valve seat to form a valve adapted to periodically open and close in response to a pulsator pressure action on the other side of the diaphragm. In its opened state, the valve permits atmospheric air to flow through a connecting conduit to the milk drain conduit such as the interior of a rubber teat cup. The connecting conduit opens through the valve seat surface. The valve poppet can be releasably secured to the diaphragm.

Abstract: An expansion device for converting changes in fluid pressure to displacement of a moving machine part or converting displacement of a moving part to changes in fluid pressure, the device featuring a first flexible expansion chamber wall at least partially defining a first expansion chamber region, a first rigid member having a convex surface supporting the chamber wall, a second rigid member having a concave surface facing the convex surface and movably mounted relative to the first rigid member to cause, when the first and second rigid members move together, the wall to fold over so that a portion of the wall's inner surface changes from an expanded concave shape to a convex shape adjacent to the first member, and a displacement connector attached to one of the first and second rigid members for connection to a moving machine part.

Abstract: A tandem diaphragm brake booster includes a housing, first and second diaphragms disposed in said housing, a partition wall disposed between said first and second diaphragms within said housing for defining four pressure chambers. The housing is composed of a cup-shaped shell section having a broad cylindrical outer wall and a flange shaped rear shell section. A bead of the first diaphragm is situated between the inner surface of the front sell section and a securing member of the partition wall for defining the first and second chambers. The second diaphragm has inner and outer beads and through-holes at its periphery. The inner bead is compressed between the peripheral edge of the partition wall and the inner surface of the rear shell section and the outer bead is air-tightly secured between both peripheral edges of the front shell section and rear shell section.

Abstract: A vibration free fluid compressor particularly adapted for Stirling cycle cryogenic refrigeration apparatus comprising a pair of identical opposing ferromagnetic pistons (10, 12) located in a housing (22) and between a gas spring including a sealed volume (52, 54, 60) of a working fluid such as gas under pressure. The gas compresses and expands in accordance with movement of the pistons (10, 12) to generate a compression wave which can be vented out to other apparatus, for example, a displacer unit in a Stirling cycle engine. The pistons (10, 12) are urged outwardly due to the pressure of the gas; however, a fixed electromagnetic coil assembly (56), located in the housing adjacent the pistons, is periodically energized to produce a magnetic field which interlinks the pistons (10, 12) in such a fashion that the pistons are mutually attracted to one another.

Abstract: A hydraulic accumulator comprises two-halfs shells, the diaphragm therebetween defining two cavities. One cavity contains presssurized gas and the cavity receives hydraulic fluid under pressure. The two-half shells are held together by a mechanical element, such as a belt which has been previously prestressed to a tension selected according to the maximum pressure to which the accumulator will be subjected. The use of the prestressed mechanical element changes the dynamic stresses ordinarily found in a hydraulic accumulator to static stresses, thus minimizing the occurrence of creeks and failure of the device.

Abstract: An expansible device for exerting force which has a generally "S" shape cross-section, being formed by stepped diameter cylinder, and arrangements using such a device are disclosed. The device may exert sealing forces and be controlled by admission of fluid pressure which acts on a thin wall member so supported as to be subjected to compressive stress alone.

Abstract: A peripheral portion of a diaphragm is clamped beween respective clamping surfaces of clamping members by means of a band which embraces the clamping members. An abutment on one of the clamping members establishes a predetermined positional relation between the clamping members. In the fully tightened condition of the band, the pressure between the diaphragm and the clamping surfaces of the clamping members is independent of the tension in the band.

Abstract: The fuel supplied to an injector is maintained at substantially constant pressure by a fuel pressure regulator which balances the fuel pressure with the bias of a coil spring. To establish the desired pressure, a spring housing is deformed to move a spring seat to the position which causes the spring to exert the required bias. The spring seat is connected to the diaphragm by a tie rod which simplifies assembly of the pressure regulator. Slits in the outer portion of the diaphragm allow separation of the diaphragm along an arcuate line while maintaining a continuous peripheral seal about the pressure regulator.

Abstract: In a diaphragm pump the diaphragm separating the delivery chamber from the working chamber is clamped between a cylinder body and a cylinder cover in pressure-balancing arrangement. For this purpose a pressure-balancing space is provided to be radially outside and to encircle said diaphragm clamping surface, the pressure balancing space communicating with the working chamber through at least one communicating passage. Furthermore, a separate annular seal member is disposed to be radially outside the pressure balancing space chamber between the cylinder cover and the cylinder body to seal-off the pressure balancing space and the working chamber from the outside. This enables the diaphragm pump to be used at discharge pressures far greater than 350 bars and simultaneously permits the use of plastic diaphragms which are reliable in operation and have a large displacement capacity.

Abstract: An end cap assembly for a diaphragm type air actuator used selectively to open and close an associated shut-off valve. The assembly includes a cup-shaped nut threadedly received on the outer end of an actuator body. A cap member is received in the nut and includes a central stub extending outwardly therefrom through a central aperture in the nut bottom wall. A conical disc spring is operatively interposed between the nut bottom wall and the cap member so that when the assembly is installed on the actuator body, the disc spring is moved toward a flattened condition and continuously urges the cap member into retaining engagement with the actuator diaphragm. This then provides automatic clamping compensation for the cap member as to variations in the diaphragm thickness due to temperature or other environmental conditions. Both the nut and cap member stub include tool receiving means to facilitate threaded installation of the nut on the actuator body while preventing cap member rotation.

Abstract: A discal diaphragm body with a plurality of radially stress-relieving full-wave annular corrugations and a plurality of circumferentially stress-relieving full-wave radial spokes. The spokes follow and conform to the annular corrugations and are integrated with them to provide dual stress-relief and enhanced sensitivity for a pressure-responsive diaphragm.

Abstract: A system for filling and subsequently producing inflation and deflation of a balloon-type dilating catheter assembly utilized in performing a percutaneous transluminal coronary angioplasty procedure. Separate primary and secondary fluid pump assemblies are provided for isolating the working pump fluid in the primary assembly from the radiocontrast medium filling the secondary assembly. The primary fluid pump assembly includes a primary pump chamber having a flexible diaphragm forming one wall thereof and a hydraulic cylinder including a piston for supplying fluid under pressure to the pump chamber. The pump assembly has been filled with a relatively incompressible liquid while the piston in the cylinder is held in an intermediate fill position and the diaphragm is held substantially flat to enable the primary fluid pump assembly to produce both convex and concave shapes of the diaphragm as the piston is moved between forward and rearward position.

Abstract: In a pulser for transmitting the reciprocating motion of a piston to a fluid contained in a chamber such as a solvent extraction column, at least one pulsation diaphragm having the shape of a hollow torus is joined to the piston and to a rim of the duct in leak-tight manner, means being provided for applying a pressure which compensates for the static pressure of the fluid on the piston and the pulsation diaphragm. The difference between the pressure exerted on the internal wall of the diaphragm on the fluid side and the pressure exerted on the external diaphragm wall is minimized during operation but maintained at a positive value.

Abstract: Apparatus for protecting a pressure-sensitive transducer in an extracorporeal blood system and for providing a sterile barrier while the apparatus transmits the blood pressure to the pressure-sensitive transducer. The apparatus (34) comprises a housing (40, 42) having first (40) and second (42) generally hemispherical members which symmetrically enclose a generally planar silicone membrane diaphragm (44). The membrane diaphragm (44) has a thickness that is less than 0.040 inch and a diameter that is at least twice as great as the intended total deflection distance. The membrane (44) is centered within the housing (40, 42) and greater pressure on either side of the membrane (44) will cause the membrane (44) to deflect to the other side by stretching.

Abstract: A diaphragm capsule for pressure monitors comprises a capsule body 12 and a capsule cap 14 with a diaphragm 16 clamped between the two. The capsule cap 14 and a ring 18 are formed integrally of plastics by injection molding and joined by webs 30. The ring 18 is subdivided into resilient segments 36 by slots 34 located below the webs 30. At their inner sides the segments 36 each have a nose 38 by means of which they are locked behind an annular shoulder 22 formed at the capsule body 12. Between the resilient segments 36 and the capsule cap 14 spaces 32 are left free whose dimensions in a plane parallel to the diaphragm 16 are just as large as the dimensions of the nose 38 underneath which are parallel to said first dimensions. (FIG.

Abstract: In a discharge valve for liquids, and especially for use in lavatories, comprising two bodies provided with hollow spaces separated from each other by a circular diaphragm, the central portion of which normally seals an inlet conduit for water which, jointly with the discharge conduit for water, opens into one of said hollow spaces, while the other one of said hollow spaces is connected by means of respective channels provided with flow restrictors, one to the inlet for water and the other one to the outlet for water, the said channels crossing the peripheral zone of said diaphragm, the following combination of improvements:(a) The channel intercommunicating the hollow spaces opens in the water inlet conduit in such a manner as to proceed upstream;(b) The guide of the piston of the plug sealing the water outlet ends in a projection in the shape of a truncated cone;(c) The sealing diaphragm has a thickening in the shape of a truncated cone; and(d) The zones surrounding the flat contact surfaces between stiff m

Abstract: A diaphragm configuration is disclosed for an air-driven pump. The diaphragm includes concentric ribs on the pressure side of the flexure portion thereof. This has been found to extend the life of diaphragms made of relatively brittle materials such as synthetic resin polymers. A ridge is provided on the surface of the diaphragm where sealing is to occur as a means for increasing the sealing capability of the synthetic resin polymer material.

Abstract: The reaction mechanism comprises a control casing secured to a movable member separating a vacuum chamber from a working chamber in a vacuum brake booster; reaction levers engaging to the casing adjacent the vacuum chamber; a reaction plate guided and secured against lateral displacement in recesses in the casing adjacent the vacuum chamber and engaging the side of the levers adjacent the vacuum chamber; a cap secured to the outer edge of the casing adjacent the vacuum chamber having a guide sleeve therein extending into the vacuum chamber, the cap enclosing the plate and the levers; and a master cylinder actuating push rod guided in the guide sleeve and having one end thereof abutting against the plate.

Abstract: A control actuator for a turbocharger comprises a diaphragm-displaced actuator rod projecting outwardly from an actuator housing through a spring-biased retainer which sealably permits axial and angular rod movement for variably positioning a turbocharger wastegate valve.

Abstract: A pump assembly for an air driven diaphragm pump mechanism having opposed pump cavities with the actuator valve mechanism located between these cavities. An inlet manifold and an outlet manifold each extend to both of the opposed pump cavities and are positioned diametrically on the pump. Tie rods extend betweeen the manifolds to draw the manifolds toward one another about the pump housing.The mating surfaces between the manifolds and the pump chamber housings are such that drawing the manifolds toward one another causes a compression in the pump components such that the entire pump may be held together by the tie rods alone.

Abstract: A high pressure diaphragm for use with an electroexpansive material utilizes a generally planar central member, a generally outer flange-engaging member, and an annular ring member, which can have a frusto-conical shape, having its outer edge flexibly connected to the inner edge of the flange-engaging member and with its inner edge flexibly connected to the outer edge of the central member. The flexible connection includes a bridge member having a thickness less than the thickness of the annular ring member and maybe fabricated integrally with said annular ring member and with the central and flange-engaging members. In one embodiment the high pressure diaphgram is pre-loaded so that during movement no portion of the flexible connectors are in tension.

Abstract: A power generator utilizing the full volumetric expansion of water upon its change from the liquid phase to the solid phase (ice). The generator includes a chamber having heat transmitting, fluid impervious, flexible walls. The chamber is filled with water. A pressure-containing housing has an internal cavity in which the chamber is located in spaced relation to the housing. The space between the housing and the flexible walls of the chamber is filled with a fluid which is circulated through the cavity. A conduit connected to the housing provides flow communication between the cavity and means for utilizing moving fluid, such as a fluid driven motor. The phase of the water in the chamber is changed from liquid to solid so that the water expands in volume. Expansion of the water expands the flexible walls of the chamber to displace a proportional amount of fluid from the housing through the conduit, the moving displaced fluid serving as a power medium to drive the motor to do work.

Abstract: A piston is disclosed which is particularly adapted for multi-stage operation in a combined air and spring-loaded brake cylinder. The piston is formed of a resilient or elastic material such as spring steel, a synthetic resin or hard rubber and has a central portion of a reduced wall strength with respect to the surrounding peripheral portion of the piston. The central portion is thus capable of elastic deformation when subjected to a force exceeding a predetermined level. The reduced strength relationship of the central portion may be achieved by a reduced wall thickness, or by the use of radially extending slots. The piston thus has a differential deformability when a pressure is applied thereto such that the entire piston can be shifted as a unit until abutting a stop structure on the housing of the brake cylinder. The central portion of the piston can then be additionally displaced if an increased pressure or force is applied to the central portion.

Abstract: A diaphragm seal assembly for use with a fluid pressure responsive instrument includes an upper housing member having a first inner side. This inner side has a recessed surface defining a cavity and includes a passageway extending through the upper member for connection with the fluid pressure responsive instrument. A lower housing member has a second inner side and a passageway extending through the lower housing member. A diaphragm is received in the cavity and is clamped between the upper and lower housing members. A clamping device is provided for securing the upper and lower housing members together. The improvement comprises a deformable lip structure extending from the first inner side for bending over the periphery of the diaphragm to sealingly secure the diaphragm to the upper housing member.

Abstract: In an assembly of two component members intended to be made fast with one another with fusion bonding into one single pair, of two pairs of zones of thermo-bondable plastics material pertaining one pair to each of said two component members, the component members are of such form that, when said zones are merged into coincident portions, a closed vacant space adjacent to the coincident portions is delimited between the component members.The component members may be the body and cap of an electric valve employed in domestic equipment such as washing machines.

Abstract: A pneumatic control device for a displaceable member of an electric circuit, having a compressible air reservoir adapted and connected by a flexible conduit to an enclosure comprising the said movable member, and comprising three superposed rigid or semi-rigid members which are at least partially housed or enclosed one inside the other, and at least one member having a compressible wall and having an edge which is engaged and clamped between two of the superposed rigid or semi-rigid members; the first of said members together with the compressible walled member delimiting the air reservoir and being provided with a nozzle leading into an inner chamber which is delimited by the assembly of said three rigid or semi-rigid members; the second and third of said members delimiting a passage between them which connects the inner chamber to an annular outer chamber delimited by the second and the third rigid or semi-rigid members and open at its periphery; said flexible conduit being connected to the nozzle in the in

Abstract: Disclosed herein is a fluid pressure indicator for providing visual indication of the magnitude of a fluid pressure condition. The indicator comprises an optical element including a front surface for receiving ambient light and a rear, light-reflecting portion having three mutually perpendicular surfaces which define a cube corner having an apex remote from the front surface, and a one-piece, resilient, imperforate diaphragm in cooperative relationship with the rear, light-reflecting portion of the optical element, to provide a chamber between the interior of the diaphragm and the three perpendicular surfaces. The diaphragm is normally not in optical engagement with the three perpendicular surfaces, but is resiliently deformed into such optical engagement upon the application of a positive fluid pressure differential to the exterior of the diaphragm.

Abstract: Disclosed herein is a fluid pressure indicator for providing visual indication of the magnitude of a fluid pressure condition. The indicator comprises an optical element including a front surface for receiving ambient light and a rear, light-reflecting portion having three mutually perpendicular surfaces which define a cube corner having an apex remote from the front surface, and a one-piece, resilient, imperforate diaphragm in cooperative relationship with the rear, light-reflecting portion of the optical element, to provide a chamber between the interior of the diaphragm and the three perpendicular surfaces. The diaphragm is normally not in optical engagement with the three perpendicular surfaces, but is resiliently deformed into such optical engagement upon the application of a positive fluid pressure differential to the exterior of the diaphragm.

Abstract: A diaphragm assembly for use in highly corrosive industrial applications includes a metal body subject to corrosion and a diaphragm formed of a corrosion resistant metal. The metal of the diaphragm is metallurgically incompatible with the body metal. The diaphragm is nevertheless hermetically sealed to the body with the aid of a transition member having a first portion of metal which is metallurgically compatible with the body and a second portion of another metal metallurgically compatible with the diaphragm. Both portions are joined together by a sound, molecular bond, as for example, by using explosive bonding techniques. The first portion of the transition member is fusion welded to the body and the diaphragm is similarly welded to the second portion, thereby presenting at the process fluid interface a barrier that consists solely of corrosion resistant metal.

Abstract: A high pressure pump in which at least one reciprocatingly driven piston acts on a hydraulic fluid communicating with one side of a diaphragm, the other side of the diaphragm communicating with a fluid to be displaced by the pump. The diaphragm is made of elastomeric material, and is relatively thick so that it is substantially self-restoring on the return stroke of the piston even in the event of total blockage of the supply of fluid to be displaced.

Abstract: A vacuum augmentation device having an outer shell divided into two chambers by means of a diaphragm, the diaphragm being adapted to be subjected to a differential pressure on the opposite sides thereof which is transferred through a piston plate on one face of a plurality of reaction levers to an output rod to produce a reaction force which is transferred to the other face of the reaction levers and then to an input rod and a metal mounting plate member interposed between the piston plate and reaction levers and having fulcrum pin retention pawls and fulcrum pin engaging pawls engaging the ends of fulcrum pins for preventing fulcrum pins from coming off the mounting plate member.

Abstract: A vacuum degree augmentation device for use in brake apparatus is provided in which a diaphragm-piston divides the body of a valve mechanism into two air-tight chambers, the valve mechanism is shiftable in response to the operation of a plunger which in turn operates in response to the operation of an input rod, the operation of the valve normally maintains the chambers in communication with each other under low pressure, but, during braking, one chamber is placed in communication with the open air to produce a differential pressure between the chambers so as to operate the piston, with the force operating the piston being transferred through a reaction lever, a fulcrum plate and an output rod to a master cylinder.

Abstract: An oil pressure switch comprising a housing having an inlet end connectable to an oil pressure line to admit oil from the line within the housing. A flexible membrane is secured in the housing and having opposed surfaces. One of these opposed surfaces is in contact with the oil admitted to the housing while the other of the surfaces is in engagement with a spring biased electrical contact. The spring biased electrical contact is in abutting engagement with a stationary electrical contact. Connection means is provided for each of the electrical contacts. The membrane is displaced by pressure in the oil line whereby the spring biased contact is caused to be displaced against its spring biased direction to cause disengagement with the stationary electrical contact.

Abstract: The present invention relates to constant stroke reciprocating piston pump with mechanically driven diaphragm coupler, including combination of adjustable pressure control means and priming valve for handling abrasive liquids such as paint, and texture.

Abstract: The longevity and safety of pressure-responsive, flexible diaphragms is improved by providing laminated construction of sealing and reinforcing layers that "breathe" through a portion of their cross sections. In one embodiment the flexible diaphragm comprises a laminate having a layer of perforated fabric-like reinforcing material on the low pressure side and a layer of impermeable elastomeric sealing material on the high pressure side with or without an additional layer of said fabric, with or without perforations on the high pressure side and with the areas of bond between the reinforcing material and sealing material being substantially continuous. In another embodiment the laminate comprises an inner layer of perforated fabric-like material bonded to outer layers of perforated elastomeric material on the low pressure side. The elastomeric sealing material layer on the high pressure side of this latter embodiment may be perforated.

Abstract: A diaphragm pump having a pump chamber divided into two portions by a diaphragm of elastomeric material which is generally of hemispherical shape and clamped at its periphery in the pump chamber. The portion of the chamber including the interior of the diaphragm communicates with a cylinder in which a piston is reciprocated by rotation of a drive shaft. The pump chamber includes inlet and outlet non-return valves for the fluid to be pumped, is detachable as a unit from a housing containing the piston and cylinder and is positioned below a normally horizontal plane containing the axes of the cylinder and drive shaft.

Abstract: An assembly for sealing and pressure equalization of a submersible motor housing having an open end includes a formed, sheet metal cup including a cylindrical band portion and a base portion with an aperture therethrough. The assembly further includes an elastomeric diaphragm having a side wall that lies against the band portion of the cup and is adhesively secured thereto. The cup includes latching tabs extending from the band portion of the cup. The tabs snap into recesses fabricated in the end of the housing to hold the cup telescoped within the open end of the housing. The portion of the diaphragm secured to the band portion is sandwiched between the band portion and the housing wall and seals against the housing.

Abstract: A method of permanently uniting two cylindrical members with mating end edges which cooperate to define a circumferential groove that is closed except for a continuous inner circumferential slot defined by the end edges. In the method, the mating end edges of the two members are brought together to imprison the peripheral bead of a flexible diaphragm under axial compression in the circumferential groove so that the web of the diaphragm extends through the continuous circumferential slot. The two cylindrical members are then held together under pressure while a cap with a cylindrical skirt is telescoped onto one member past the joint between its mating edge and that of the other member. Prior to this telescoping step, the inner wall of the skirt is coated with a suitable adhesive to provide an adhesive layer between the confronting skirt and cylindrical wall areas of the final assembly. The two cylindrical members are maintained under pressure until the adhesive sets, after which the pressure is released.

Abstract: A means for mounting a diaphragm in an accumulator-reservoir device or the like in which the gland receiving the diaphgram bead has faces formed to oppose such pull on the bead as will break the sealing contact between gland faces and the bead. Back draft angles and grooved surfaces are used in conjunction with an initial applied compression to fix the bead in place in the gland.

Abstract: A cartridge type control valve for replaceable use in the dispensing head of a fluid dispensing system includes, a fluid transfer assembly having a composite fluid transfer chamber means and an inlet duct assembly made of plastic material, the inlet duct assembly includes a longitudinal leg formed integral with the bottom and sidewall of the fluid transfer chamber means and a transfer leg operatively connected to the longitudinal leg and locked to the sidewall to prevent relative rotation thereof, valve means including a valve stem made of plastic material coacting with a valve port formed in the inlet duct assembly to control flow of fluid through the fluid transfer assembly, and an actuating assembly for operating the valve means with a regulator sub-assembly therein having a valve guide made of plastic material disposed for operative connection to the valve stem.

Abstract: A brake booster unit has a housing composed of a front and a rear shell element detachably coupled with each other; a resilient diaphragm is mounted in the interior space of the housing for mechanical separation thereof into a vacuum chamber and a atmospheric pressure chamber; a sleeve member and a motion-transmitting rod concentrically arranged thereto and connected with a brake pedal are partially introduced sealingly and movably into the interior of the atmospheric chamber; first valve means is formed between the rod and the sleeve for "on-off" control of fluid communication between the atmospheric pressure chamber and ambient atmospheric pressure; second valve means includes a beaded inner periphery of the diaphragm and acting as a valve seat; a valving portion to mate with the diaphragm is formed on the sleeve and has a configuration preventing unintentional radial displacement of the beaded periphery while the booster unit is urged toward its operating position; the second valve means is kept at its "cl

Abstract: An assembly for sealing and pressure equalization of a submersible motor housing having an open end includes a formed, sheet metal cup including a cylindrical band portion and a base portion with an aperture therethrough. The assembly further includes an elastomeric diaphragm having a side wall that lies against the band portion of the cup and is adhesively secured thereto. The cup includes latching tabs extending from the band portion of the cup. The tabs snap into recesses fabricated in the end of the housing to hold the cup telescoped within the open end of the housing. The portion of the diaphragm secured to the band portion is sandwiched between the band portion and the housing wall and seals against the housing.