Abstract: The invention provides a brake booster including in a preferred embodiment a housing, first and second annular flexible diaphragms spaced from one another forming a sealed second chamber within the housing and a sealed first chamber between the first diaphragm and the first end of the housing, a generally annular shaped power piston for connection with the master cylinder piston, a chamber valve seat separating the first and second chambers, an inlet valve slidably mounted within the power piston, and a control valve spring biased away from the power piston and connected with the pedal linkage and being slidably and sealably mounted within first end of the housing.

Abstract: A diaphragm device utilized, for example, in a vacuum advance mechanism of a distributor of an internal combustion engine is disclosed. The diaphragm device comprises: a housing consisting of two cup-shaped members coupled to each other at the marginal flanges thereof; a diaphragm extending in the housing to define an airtight chamber therein; and a control rod coupled to the diaphragm to transmit the motion thereof. The outer marginal portion of the diaphragm is clamped between the flanges of the two cup-shaped housing members, wherein the distance between the radially extending flanges clamping the diaphragm therebetween is strictly controlled by a distance regulator, which may be constituted by a step formed in the outer portion of one of the flanges toward the other flange, the outer marginal portion of the diaphragm being received in the stepped-down inner portion of the stepped flange.

Abstract: A diaphragm piston assembly in which an annular ring member is provided, preferably at the outer clamping periphery of the diaphragm between the underside of the diaphragm and body, to exert a force on the diaphragm in the direction of the cover that clamps the diaphragm to the body, thereby encouraging the diaphragm convolution to assume a disposition in a preferred direction corresponding to the direction in which the convolution is predisposed by the inherent "spring effect" of the diaphragm.

Abstract: Pumps for nonlubricating fluid can use membranes for the separation of different fluids. Suitable membranes can be used for pressures up to several thousand atmospheres in the fluids. Such membranes are, however, subjected to difficult problems like stresses in the material of the membrane, compression of the material of the membrane and the like. These problems prevented long life of the membranes or it restricted the membranes to such short strokes that the deliveries of the pumps were small at a given size and weight. The present invention improves the life time and the delivery capacities of membranes by creating most suitable configurations of the membranes and of the adjacent parts. Pumps or compressors for relative big delivery quantities, and also for high pressures up to several thousand atmospheres in cases of pumps, are thereby obtained.

Abstract: A diaphragm clamping arrangement for assembly of a diaphragm-type piston in the body of a valve device or the like such that the diaphragm is biased in a direction to cause the diaphragm convolution to assume a preferred disposition in which a desired diaphragm "spring effect" is maintained.

Abstract: A valve for dispensing a liquid such as soap or hand lotion, from a fluid dispenser. A valve body for mounting in the fluid dispenser and having a valve chamber with a rolling diaphragm carried in the body dividing the chamber into a piston section and a fluid flow section. A piston is slidingly positioned in the piston section and a flow restrictor is slidingly positioned in the fluid flow section, with a spring in the fluid flow section urging the restrictor into engagement with the diaphragm for moving the piston to the out position. A fluid inlet and a fluid outlet are provided in the fluid flow section so that an inward movement of the piston dispenses fluid and an outward or return motion of the piston draws a new charge of fluid into the valve.

Abstract: A diaphragm pump has at least one double-acting piston moving in a cylinder closed at its ends by diaphragms and filled with oil. The diaphragms are capped by cylinder heads defining the chambers in which warping of the diaphragms produces the suction and discharge of liquid to be pumped through suction and discharge tubes each having a one-way valve therein. The diaphragms are centrally connected to the piston ends by screws whose screw heads have the form of a large diameter, concave metal cup. The screw head concavity faces the cylinder heads and has an internal surface provided with, for example, annular reliefs, ensuring a large contact surface between the screw heads and the pumped cooling liquid.

Abstract: A diaphragm type pump device has an elastic material imparting elasticity by the change of its volume which is placed in an operation chamber to decrease residual volume in the operation chamber when a diaphragm reaches the upper dead point.

Abstract: A pump comprising a housing and a flexible diaphragm mounted in the housing. A first region of the diaphragm partially defines a first pumping chamber, and the pumping chamber has an inlet and an outlet. A wobble plate drive is coupled to the first region of the diaphragm to provide a pumping action in the pumping chamber. The wobble plate drive has a nutating axis, and the first region of the diaphragm lies radially outwardly of the nutating axis. The first region of the diaphragm has a generally annular ramp section which flexes when driven by the wobble plate drive to provide the pumping action, and the ramp section is wider radially at a location remote from the nutating axis than at a location nearer the nutating axis. The pump also has a single outlet valve arranged to serve multiple pumping chambers.

Abstract: A diaphragm type vacuum actuator movably providing in a case a rod having piston plates, the piston plates being connected to an inner peripheral surface of the case by means of two diaphragms so as to divide a case inside into a first chamber and a second chamber and form an intermediate chamber in between the both diaphragms, and the rod being made movable by subjecting one of said first and second chambers to vacuum and by opening the other thereof to atmospheric pressure; characterized by that air passages are formed in the piston plates, one ends of the air passages are interconnected to the intermediate chamber, and the other ends thereof are interconnected to chambers under atmospheric pressure.

Abstract: A diaphragm pump of the type having a housing forming a pump chamber, a diaphragm attached to an outer periphery thereof to the housing within the chamber, inlet and outlet valves communicating with the chamber, and a motor having an eccentrically rotating driveshaft, in which a connecting rod is attached to the diaphragm and includes a substantially flat portion which extends through slots formed in the housing, and an aperture which receives the drive shaft of the motor and is sized to form a slip fit therewith. The slots are shaped to slidably receive the flat portion of the rod and constrain its motion, when displaced by rotation of the drive shaft, to a single plane which is perpendicular to a rotational axis of the drive shaft, thereby eliminating the transmission of thrust and torsional loads between the rod and drive shaft so that the motor bearing life is increased.

Abstract: A friction coupling apparatus contains a plurality of fluid motor actuators circumferentially fixed about a relatively rotatable shaft. Each of the actuators is positioned between a spaced pair of friction rotors fixed to the shaft for rotation therewith. The actuators each contain an annular axially distensible elastomeric air tube, which upon pressurization operates to force pairs of friction members against the rotors for establishing frictional communication between the shaft and a relatively fixed support member. In a preferred embodiment, the elastomeric air tube contains a pair of axially spaced apertures. Each aperture defines a circumferential sealing edge by which one of a pair of air pistons is supported. Each piston contains a circumferential groove which sealingly mates with one of the edges, the pistons positioned to bear directly against the friction members.

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: A diaphragm pump wherein the lower portion of an upright housing surrounds an eccentric extending into the annular lower end portion of the one-piece connecting rod the upper end portion of which extends through the central openings of two discs flanking the apertured central portion of a flexible diaphragm whose marginal portion is sealingly clamped between the main housing portion and a cover overlying the diaphragm. The top part of the upper end portion of the connecting rod is deformed to constitute a rivet head which sealingly fills the opening of at least one disc and urges the discs as well as the central portion of the diaphragm against the S-shaped surface of a carrier forming part of the connecting rod and serving to support the underside of the adjacent disc.

Abstract: A control actuator for a turbocharger comprises an actuator rod coupled within an actuator housing to a pressure responsive diaphragm biased by a spring, and projecting out of the housing for connection to a turbocharger wastegate valve. A seal assembly on the rod accommodates sealed axial rod displacement, and includes a spherical seat maintained by a second spring in relatively low pressure pivotally sealing relation with the housing.

Abstract: A diaphragm actuator is operated by the pressure difference between a pressure chamber and a negative pressure chamber, and causes an operating shaft to slide through a wall portion of the negative pressure chamber. When the pressure in the negative pressure chamber is highly negative, ambient air leaks along a shaft seal and flows through the negative pressure chamber into a suction manifold of an engine, resulting in fluctuation of the air-fuel ratio. According to the present invention, the shaft seal includes a sealing diaphragm mounted on the wall portion, which supports a movable annular member. This annular member has a tapered surface by which an O-ring is compressed axially and radially inwardly against the operating shaft. The compression force applied to the O-ring increases as the negative pressure in the negative pressure chamber becomes higher.

Abstract: A diaphragm pump including an eccentric circular cam or crank shaft, a connecting rod rotatably connected at one end to the eccentric circular cam or crank shaft, a pair of diaphragms each having one surface serving as pressure receiving surface, center disks mounting the central portions of the pair of diaphragms on the opposite sides thereof, a first housing cooperating with one of the diaphragms and the center disks to define a first discharge chamber, a second housing cooperating with the other of the diaphragms and the center disks to define a second discharge chamber, a third housing cooperating with the pair of diaphragms and the center disks to define a suction chamber, a connecting member connecting the other end of the connecting rod to the center disks in the radial center and in the middle of the thickness thereof in order to minimize any swinging movement of the center disks which would otherwise be caused by reciprocatory swinging movement of the connecting rod, and guide means for guiding the c

Abstract: A pneumatically actuated adjusting device, particularly for throttle flap adjustment on mixture-compressing combustion engines, with a diaphragm held between a housing upper portion and a housing lower portion. This diaphragm forms a vacuum-charged working chamber with the housing upper portion. With the housing lower portion it forms a chamber open to ambient atmosphere. A guide bushing projects from the housing upper portion on the atmosphere vented side of the diaphragm and is rigidly connected to it. The diaphragm is also rigidly connected to two concentric spaced diaphragm plate pairs. The outer diaphragm plate pair is connected to a pipe moving inside the guide bushing. This pipe has one or several recesses, with a ball in every recess. Indentations in the guide bushing have diameters corresponding to the ball diameter, with the depth determining the stroke of the first adjustment stage. The inner diaphragm is rigidly connected to a control piston inside the pipe. This control piston has a recess.

Abstract: A diaphragm stack for a control device and having at least two flexible diaphragms separated by a rigid spacer and a pair of rigid outboard members with the pair of outboard members being secured together by a fastening means passing through the center of the stack. The outboard members and the spacer have interlocking means disposed inboard of the inner peripheral portions of the diaphragms and serially interlocking together in the stack to prevent rotation of the spacer and the outboard members relative to each other in their assembled relation in the stack.

Abstract: A three-position actuator comprising a casing having a diaphragm dividing the casing into separate pressure chambers, an actuating rod connected to said diaphragm and resilient means urging said diaphragm in one direction. One of the resilient means comprise a movable spring seat with a compression spring interposed between the seat and a plate connected to the diaphragm. The seat and plate are in turn interconnected by a single flat connector strap limiting separation between the plate and diaphragm to an amount approximately one-half the total travel of the diaphragm. In one embodiment of the invention the spring seat is connected to a separate diaphragm. In the preferred embodiment of the invention, only a single diaphragm is employed and the spring seat floats in the casing, with its separation from the diaphragm limited by the connector strap.

Abstract: A fluid pressure motor having a movable diaphragm assembly and an output assembly housing a plurality of output members at least some of which can move relative to the diaphragm assembly and can be connected to separate devices for control by a single differential control pressure in the motor.

Abstract: A diaphragm assembly for servo motors has been provided wherein a pair of backing elements have opposed portions acting on opposite sides of a diaphragm assembly and are held in fixed relationship to each other through the means of a sonic weld located at a point remote from the diaphragm to provide a leak-proof diaphragm assembly which lends itself to ready modification to accept valves or diaphragms to change the operating characteristics for different applications.

Abstract: An adjusting drive operated by a pressure medium with a spring-loaded roller diaphragm secured to plates and displaceable within a housing by the pressure medium; the roller diaphragm actuates an adjusting member that is securely connected with a plate and extends out of the housing; in addition to its end positions, the adjusting member is also able to assume at least one intermediate position; the plates are thereby connected with each other by the roller diaphragm while a plate not directly connected with the adjusting member sealingly rests on a ring-shaped abutment projecting out of the inner wall of the housing in the intermediate position of the adjusting member.

Abstract: A deceleration valve for use in a vehicle emission controls system is responsive to increased engine manifold vacuum (thereby indicating a vehicle deceleration) to vent the vehicle air cleaner through the intake manifold for a controlled period of time to eliminate exhaust backfiring and to reduce hydrocarbon emissions. The valve mechanism includes a diaphragm assembly comprising an annular flexible member having an outer periphery clamped to the valve housing and an inner periphery clamped between a pair of diaphragm plates. One of the diaphragm plates has an axially projecting portion which extends through the opening in the flexible member. The other diaphragm plate has a plurality of axially extending, resilient legs which circumscribe the axially projecting portion of the first diaphragm plate and are yieldable in a radial direction so that they are able to snap into a groove on the axially projecting portion when the valve is assembled.

Abstract: A two stage vacuum break or fluid motor device of the type used to control choke valves of internal combustion engine carburetors. The motor uses a single diaphragm in which the fluid motor plunger operates in a first stage in response to movement of a portion of the diaphragm and in a second stage in response to movement of the entire diaphragm. The stages of movement are under the control of separate sources of manifold pressure which may be made available to the device independently of each other. The two stages of operation may be used to control one or more choke valves through a single output plunger or to control a pair of output plungers movable independently of each other.

Abstract: A valve device for an exhaust gas recirculation system of an internal combustion engine, which device has a diaphragm mechanism having a diaphragm to form at least one chamber which is connected to an engine port and has a valve member connected to said diaphragm via a rod to open the valve member against a force caused by a spring acting on the diaphragm, when a vacuum signal of a predetermined level is transmitted from the engine port. The device includes means for allowing adjustment of the position of the diaphragm with respect to the rod and means for securing the diaphragm to the rod after said adjustment of the position of the rod is perfected. Therefore, the EGR valve which is opened at the constant vacuum level can be obtained, with a minimum number of parts requiring high accuracy.

Abstract: The invention involves an improved design for a diaphragm pump. The inlet and outlet valves for the pump have guided stems that prevent the valves from misaligning and jamming during operation. The stems extend away from each other enabling the valve heads to be moved close to each other so that the pump bowl can be made relatively short. The pump diaphragms include rim portions that cover and protect the members securing it in the pump. The stroke of the pump is adjustable by an arrangement that can vary the size of the stroke while keeping the suction and discharge portions of the stroke equal.

Abstract: A vacuum motor suitable for actuating a carburetor choke valve has primary and secondary stages responsive to separate vacuum signals. The secondary stage is carried by the primary stage and has a valve which opens upon full retraction of the primary stage to permit application of a vacuum signal to the secondary stage.

Abstract: A solar engine including an air motor driven by a quantity of pressurized hot air from a solar heater vessel and including an air pump for pumping substantially an equal mass of cool air back into the solar heater. The driving action of the air motor and simultaneous pumping action of the pump is accomplished in one embodiment by means of a moving piston which separates the driving and pumping sides of the air motor enclosure, whereby substantially both displaced volumes are substantially equal. Air is used as both the heat transfer means and as the actual working fluid. The engine provides for an unlimited life for the solar collector, and an engine of relatively low friction and substantial simplicity.

Abstract: Apparatus for cutting or scoring sheet material, e.g. glass, with rapid responses to irregularities in the surface of the sheet material and to commands to commence or interrupt a cutting or scoring operation, employs a fluid pressure actuated diaphragm device to impart movement to a cutting or scoring tool, e.g. a cutting wheel, towards and away from the surface to be cut or scored, and means for controlling selectively the pressure acting on each side of the diaphragm. The tool may be supported and guided in a cutter head which incorporates the diaphragm device and which carries supporting means, such as a pair of wheels, for supporting the cutter head on the surface of the material when the tool is retracted. Fluid pressure supply to the diaphragm device and to a separate piston device for applying the cutting load can be controlled by solenoid-operated values. Supply of a cutting fluid to the tool can be similarly controlled.

Abstract: A hydraulic release mechanism for automotive clutches and the like comprising a housing and a bearing assembly. The assembly comprises a non-rotating race ring, a rotatable race ring adapted to be connected to an operating element for said clutch and a plurality of rolling elements arranged therebetween. The bearing assembly is mounted with respect to the housing for axially slidable movement and radially floating movement. The housing under pressure, the force of which is transmitted through the end of the non-rotating race ring, the rolling elements, and the rotating race ring to the clutch operating element. Preferably, the means for mounting the bearing assembly with respect to said housing comprises a flexible bellows.

Abstract: Apparatus for an improved diaphragm pump wherein hydraulic shock and mechanical wear to the diaphragm membrane is reduced by providing a circular reed valve member adjacent to the diaphragm. The reed valve member provides a barrier to pressurized hydraulic fluid jets from direct impingement upon the diaphragm membrane, and provides a valve closure member for reducing hydraulic shock effects on the diaphragm membrane.

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 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 carburetor has a vacuum operated diaphragm type choke control device that acts in connection with a thermostatic control to permit the carburetor choke valve to be closed during starting but provides a controlled gradual opening of the choke valve after starting. An adjustable stop member permits adjustment of the opening by limiting the extent of movement of the diaphragm. The device includes purge feature for continual self-cleaning of the device. A one-way check valve device and precision by-pass means give exact control of the choke opening.

Abstract: A push rod and tappet assembly for a cam actuated pump in which a tappet having a barbed shank is lightly press fitted, during assembly, part-way into the hollow end of the push rod so that during the initial operating cycle of the pump, as the cam on which the tappet rides rotates through the first cycle of rotation, the pump piston to which the push rod is connected bottoms out and the shank of the tappet will then be forced further into the push rod to a position to thereafter provide substantially zero clearance in the pump.

Abstract: The invention relates to a pilot controlled, magnetic type of valve having a diaphragm with the outer edge floatably attached to the housing. Excessive deformation of the diaphragm is prevented by providing a supporting ring which is axially movable in relation to the body of the valve and has a conical surface which is engaged by the diaphragm and to which the diaphragm conforms when the valve is in an open position.

Abstract: In an air valve carburetor having a diaphragm positioning the air valve to maintain a constant pressure drop thereacross, a small calibrated hole is provided in the diaphragm to create a continuous flow of air through the diaphragm chamber and thereby purge fuel from and inhibit accumulation of fuel in the diaphragm chamber.

Abstract: A vacuum operable unit for use in an ignition distributor of an internal combustion engine comprising a casing divided into first and second chambers by a diaphragm. A push rod is coupled to the diaphragm and extends through one wall of the first chamber, a seal engaging the wall of the chamber and the push rod so as to permit movement of the push rod with the diaphragm, while sealing the first chamber. First and second springs are positioned in the first and second chambers respectively, and either spring is operable on the diaphragm as the diaphragm moves in a direction to reduce the volume of the respective chamber. The housing supports a pair of abutments associated with the springs respectively, the springs engaging their respective abutments when the diaphragm is in a central position, so that in the central position neither spring acts on the diaphragm.