Abstract: A self-aligning piston assembly has a piston member having a sidewall for slidable displacement within a bore, the piston member having an inner curved surface, the piston assembly having an inner race member having means to attach to a connecting member, the inner race member having a curved surface complimentary to the inner curved surface and, an elastomer member disposed therebetween substantially in the form of a sphere to provide a spherical type mounting of the piston to the connecting member. Utilizing a spherical type mounting, axial rigidity is maintained yet any side loading which acts through the connecting member or manufacturing tolerances are absorbed through the spherical elastomer to prevent misalignment or cocking of the piston within the bore during stroking. Utilizing the invention, excessive wear and fluid leakage by the piston is avoided since misalignment is absorbed by the elastomer member.

Abstract: An improvement of a recess formed in one end of an output shaft of a brake booster is disclosed. At its one end, the rear extremity of the output shaft is formed with a flange-like stop, which is formed of an annular sheet material. The engagement of the stop with the retainer is effective to prevent said one end of the output shaft from being disengaged from an annular projection on a valve body. This allows the diameter of a reaction disc to be increased without requiring an increase in the diameter of the valve body. Accordingly, a brake feeling can be adjusted over an increased extent than before by increasing the diameter of the reaction disc.

Abstract: Radial pump with a rotary shaft (4) on which an eccentric (6) is fitted. A sleeve (8) to which a plurality of pistons (12) is connected is fitted rotatably on the eccentric (6). The connection between the sleeve (8) and the pistons (12) is achieved by a part made of elastically deformable material (9) which is fitted around the sleeve (8). A controlled opening and closing movement of the pistons is thus obtained through rotation of the pump shaft (4). More than one series of pistons can be fitted around the shaft.

Abstract: A reaction disc used in a brake booster, in particular, an improvement of an air vent formed in the outer periphery of the reaction disc is disclosed. The reaction disc is provided with a circumferentially discontinous bulge on its external peripheral surface, and a discontinuity in the bulge provides an air vent passage. A burr is formed on the external peripheral surface of the reaction disc as displaced from the bulge. The bulge has a height which is chosen to be greater than the height of the burr. When a reaction disc thus constructed is fitted into a recess of a push rod, the air vent passage provides a positive venting action for the air trapped in the recess. Accordingly, no deburring operation is required during the manufacture of the reaction disc.

Abstract: A piston-cylinder unit for producing and transmitting compressive forces onto adjusting elements which are guided so as to be slidable on a straight line. The piston-cylinder unit includes a push rod mounted so as to be capable of oscillating transversely of the direction of the compressive forces in a unilaterally open skirt-type piston. The push rod is slidingly movable from a centered position into an oscillating position. The centered position is determined by sealing members placed so as to face each other and mounted at an outer periphery of the push rod and an inner rim of the skirt-type piston. The push rod is movable into the skirt-type piston toward a fixed stop arranged in the skirt-type piston. The push rod is movable against the force of a spring element arranged at the bottom of the skirt-type piston.

Abstract: A fluid transmission linear actuator having a chamber with a cylindrical boundary and a central axis. An output plunger has a head in the boundary. A neck is formed on the chamber with a passage entering it. An input plunger is axially movable in the neck. The input plunger and the ouput plunger are coaxial. A transmission capsule has a continuous skin forming a first reentrant fold between the output plunger and the boundary, and a second reentrant fold between the neck and the input plunger. A substantially incompressible fluid fills the capsule so that movement of either plunger results in proportional movement of the other plunger. This input plunger can be formed with an exponential surface so that its movement can result in a non-linear response, or in some circumstances can provide a linear output in response to a non-linear input.

Abstract: A hydraulic actuator (1) with automatic wear take-up, is formed with a first piston (17) sliding in a blind bore (13), a second piston (33) in a bore made in the first piston, and an output rod (3) bearing on the second piston. A first chamber (27) is formed between the blind bore and the first piston and a second chamber (37) is formed between the bore and the second piston. A piece (19) having a shoulder (23) is fixed, on its side of smaller diameter, to an end (21) of the first piston confronting the first chamber, forming an annular space. The annular space contains an annular gasket (39) and stop (41), so as to divide the first chamber into two volumes (43, 45), one (45) connected to a pressure generator (7) and the other (43) communicating with the second chamber through a duct (47) made in the end of the first piston. The two volumes communicate with one another, at rest, via a passage provided between the gasket, the stop and the piece.

Abstract: Apparatus for preventing percussion beats in a brake booster is disclosed. The apparatus prevents percussion beats from occurring as a result of an abutment of a valve plunger, which forms part of a valve mechanism, against a key member which is used to prevent the valve plunger from being withdrawn from the valve body. An elastic member is formed on at least one of the key member and the valve plunger. The key member and the valve plunger are formed with abutting surfaces thereon which are adapted to abut against each other. A normal spacing between the abutting surfaces is chosen to be greater than a spacing as measured between the elastic member and the other member which is abutted by the elastic member. In this manner, the occurrence of percussion beats as the key member abuts against the valve plunger is prevented while also preventing a reduction in the durability of the elastic member.

Abstract: A prosthetic leg has a pivotal knee joint and a hydraulic fluid control unit connected to provide variable forces which dampen flexion and extension of the knee and also bias the leg to its extended position. The unit includes an aluminum housing lined with an axially adjustable sleeve and control bushing defining a cylindrical chamber which receives a piston mounted on a tubular piston rod. The housing and chamber receive hydraulic fluid or oil which flows during movement of the piston through fluid control ports, channel and adjustable gaps defined by the sleeve and bushing for damping the movement of the rod. The piston rod encloses a gas filled flexible bladder which forms an oil accumulator during inward movement of the piston rod and also produces variable forces for moving the piston rod outwardly to its extended position. The housing confines a gap defining ring which compensates for changes in oil viscosity with heat.

Abstract: A joint for connecting a driving member having an end surface to a driven member having an end surface wherein a solid, deformable, non-compressible material is located therebetween and associated therewith to provide a space to permit limited relative movement therebetween so that when a force is applied to the driving member to move the driving member toward the driven member, the solid, deformable, non-compressible material deforms to compensate for any misalignment between the driving member and the driven member until it fills the space and the non-compressible characteristic thereof operates so that a uniform force is then transmitted across the end surface of the driven member to move the driven member.

Abstract: A power source (14) rotates an eccentric (20) engaged within the center of a relatively large drive roller (22) to rotate the drive roller while simultaneously orbiting the center of the drive roller about a circular path so as to cyclically advance and retract from piston assemblies (24) located within pump assemblies (16a-16d). Rotation of the eccentric (20) causes each piston assembly (24) to cyclically advance against and retract from a flexible diaphragm (26) to cause fluid entering the pump assembly to be forced out under pressure. Each diaphragm (26) is "backed" by a spring-loaded support (27) that resiliently pushes against the side of the diaphragm opposite the piston assembly.

Abstract: The present invention is directed to a self-adjusting servo mechanism (10). That is, the servo pin (30) presented from the servo mechanism (10) will protract sufficiently to effect operative engagement of a friction band assembly (13) with a rotating member (18) in a planetary gear set--even though the required axial displacement of the servo pin (30) during such protraction may exceed the axial displacement available to the actuating piston (33). The servo mechanism (10) is incorporated in a housing (20). The housing (20) presents a socket cavity (24) within which an actuating piston (33) is received for axial displacement through a predetermined distance. The servo pin (30) is supported by the housing (20) for axial reciprocation, and a coupling means (35) is interposed between the servo pin (30) and the actuating piston (33) operatively to protract the servo pin (30) in response to displacement of the actuating piston (33).

Abstract: A piston and piston support rod assembly in which the piston is formed as a sheet metal stamping. A central sleeve is attached to the end wall of the stamped piston by a swaging operation performed on an annular section of the end wall. An undercut area of the sleeve defines a mandrel surface that effectively grips the end wall material deformed by the coining operation. A principal advantage of the new structure is a relatively low manufacturing cost.

Abstract: A pressure responsive driver couples a reciprocating motor output to a reciprocable piston of a double-acting pump. In one embodiment, the driver comprises a single spring and in another a pair of springs, which transfer reciprocation forces of the motor output to the piston to reciprocate the piston through its pumping strokes. The spring(s) transfers the entirety of the reciprocation forces of the motor output to the piston until a selected outlet pressure from the pump is reached, whereupon the spring(s) compresses to absorb cranking forces and limit maximum pump outlet pressure to about the selected pressure. The reciprocating motion of the motor output is divided between the spring(s) and piston, such that the extent of flexure of the spring(s) is inversely proportional to movement of the piston, whereby the spring(s) takes up any motion of the motor output not used to move the piston.

Abstract: An electromechanical motion amplifier in accordance with this invention is useful for controllably converting an input displacement into an amplified output displacement. This device comprises a first piston movable within a predetermined range of travel along an axis in response to the input displacement, and a second piston movable within a predetermined amplified range of travel along such axis. Force transmission means cooperating with the first and second pistons is utilized for effecting movement of the second piston in response to movement of the first piston. The relationship between the first and second pistons is such that movement of the first piston along the axis produces amplified movement of the second piston along the axis in a selected direction. In a preferred embodiment, the force transmission means is an elastomer, and the second piston is connected to a valve located in a nearby chamber, so as to directly control the positioning of the valve.

Abstract: A dual master cylinder for a vehicle brake system includes a housing having a housing bore with a open end and a closed end. The open end has a piston stop. Two pistons are reciprocably received in the housing bore and define therewith a first pressurizing chamber between the pistons and a second pressurizing chamber between the second piston and the housing bore closed end. Each piston has a piston cavity opening into the respective pressurizing chamber. A first locator member and a second locator member are respectively received in the pressurizing chambers and slidably mounted in the piston cavities of the respective pistons. The first locator member projects into engagement with the rear wall of the second piston and the second locator member projects into engagement with the housing to establish the pistons at respective normal rest positions enabling fluid communication through the port between the fluid reservoir and the respective chambers.

Abstract: A fluid-operated actuator for collets, vises, chucks and other workpiece engagement devices, for example, the actuator having a piston which moves the engagement device toward the workpiece with a force equal to product of the area of the face of the piston times the pressure of a fluid applied to the face. When the engagement device has engaged the workpiece, additional, relatively slight movement of the piston causes a force multiplying mechanism to provide increased engagement force without increasing the pressure of the actuating fluid. The overall travel of the actuator mechanism is not limited by the force-mulitplying mechanism which begins to function only after the unrelated distance of travel of the engagement device to the workpiece. Thus, for example, compressed air at ordinary shop pressures may be used to actuate collets or chucks on automatic lathes or the like to provide relatively high clamping forces.

Abstract: A self contained servo mechanism (10, 110) for actuating a friction band assembly (13) in a planetary gear set. The servo mechanism (10, 110) is contained within a housing (25, 125) which incorporates a piston chamber (32, 132). The housing (25, 125) is demountably secured within a socket cavity (21, 121) provided in the transmission case (11, 111). A piston means (40, 140) is slidably received within the chamber (32, 132), and the piston means (40, 140) is operatively secured to an actuating pin (55, 155) that is slidably received within a pilot bore (34, 134) which penetrates the housing (25, 125) and which is aligned with the piston chamber (32, 132). The actuating pin is, in turn, operatively connected to a friction band assembly (13) within the transmission case (11, 111).

Abstract: A power source (14) rotates an eccentric (20) engaged within the center of a relatively large drive roller (22) to rotate the drive roller while simultaneously orbiting the center of the drive roller about a circular path so as to cyclically advance and retract from piston assemblies (24) located within pump assemblies (16a-16d). Rotation of the eccentric (20) causes each piston assembly (24) to cyclically advance against and retract from a flexible diaphragm (26) to cause fluid entering the pump assembly to be forced out under pressure. Each diaphragm (26) is "backed" by a spring-loaded support (27) that resiliently pushes against the side of the diaphragm opposite the piston assembly.

Abstract: Hydraulic booster device intended to be arranged in parallel with a primary actuation circuit between an actuator mechanism and a receiver, the device comprising an electromagnetic valve mechanism (10) arranged between an actuator (12) and a pressure-fluid source (16), the actuator (12) comprising a piston means (56, 66, 92) displaceable under the effect of the pressure-fluid and intended to actuate the receiver independently in response to an electrical control signal supplied to the valve mechanism (10).

Abstract: In a rotational working cylinder comprising a shaft arranged concentrically within the working cylinder and driven out of the working cylinder with at least one end of it, a piston being divided into two piston portions perpendicularly to the shaft and the piston portions being held in tensed position in respect to each other, forced trajectories between the working cylinder and the piston portions as well as between the piston portions and the shaft, respectively, at least one of the forced trajectories is formed as a longitudinal spiral path, and the piston portions are locked in relation to each other for maintaining the tensed position of the piston portions in all operational positions and loads of the working cylinder.

Abstract: A spring operated valve actuator with variable return force includes a compact spring mechanism with a short but very powerful closing characteristic. The energy provided by the spring mechanism is applied during the entire movement of the valve, with varying forces localized according to particular needs. The spring mechanism and a movable piston member are mechanically and drivingly interconnected by a variable reduction mechanism.

Abstract: A vacuum booster including a push rod, a housing having a first and second compartments, a power piston located in the housing and operated by a pressure differential between the first and second compartments and including a small and large diameter opening portion, a control valve operatively associated with the push rod and located within the power piston for controlling the pressure differential between the first and second compartments in response to movement of the push rod, an output member having a rear end portion slidably disposed within the large diameter opening portion of the power piston, a valve plunger provided in the control valve and having one end slidably disposed in the small diameter opening of the power piston, a resilient reaction disc located adjacent the rear end portion of the output member and disposed within the large diameter portion of the power piston, and an elastic member disposed between the rear end portion of the output member and the power piston and defining a position of

Abstract: The casing of the jack is divided into two cylinders by a cross partition, with a first piston which moves in one of the cylinders and a second piston, forming two parts, linked by a rod which crosses the partition to its first part which moves in the first cylinder-shaped piston and its second part which moves in the second cylinder of the jack. The fluid is conveyed selectively either to the cylinder formed by the first piston or to the second cylinder which communicates with the first cylinder through holes drilled in the partition.

Abstract: Control device (10) for a twin master cylinder (18) of the type with two master cylinders situated side by side and parallel to one another; the device (10) is capable of being positioned between an actuating pedal (12) and pistons (26, 26') of the master cylinders. According to the invention the device (10) incorporates a compensation (63, 63') of the travel of a control rod (52) situated on the same side as the pedal (12) relative to the travel of two independent push rods (34, 36') which are capable of acting upon each of the pistons (26, 26').

Abstract: A joint for connecting a driving means to a driven means for reciprocating movement wherein a confined deformable, non-compressible material is in contact with a surface area of the driving means and with a surface area of the driven means and when a force is applied to the driving means to move the driving means toward the driven means, the deformable, non-compressible material deforms to compensate for any misalignment between the driving means and the driven means until it reaches its non-compressible state so that a uniform force is then transmitted across the surface area of the driven means in one direction to move the driven means.

Abstract: A reaction mechanism for use in a vacuum brake booster (10). A lever (86) transfers a reaction force from a first plunge (64) into a second plunger (110) to provide an operator with an indication of the output force being produced in response to an input force. A resilient member (118) urges a first connecting member (116) into engagement with the lever (86). When a predetermined input force is applied, the reaction force overcomes the resilient member (118) and thereafter allows the input force to be directly transmitted through a second connecting member (122) and added to the output force.

Abstract: Proportional magnet having a housing in which an armature bar is mounted which is movable under the influence of an armature winding arranged in the housing, wherein a hydraulic unit serving to operate the armature bar is additionally provided.

Abstract: A fail-safe system for use on a hydraulic piloted pressure reducing and regulating valve for holding the valve at the last selected operating pressure in the event of loss of control signals. A pressure regulating valve having a body and a control piston therein is provided with a pilot piston in the body which is adapted to be connected to and responsive to a hydraulic signal pilot pressure. A segmented locking ring surrounds the assembly and coacting concentric V-shaped locking grooves are provided between the locking ring and the assembly for locking the assembly. The segmented ring is biased towards an unlocked position. An annular cam ring engages the exterior of the locking ring. Coacting wedge surfaces between the cam ring and the locking ring are provided for locking and releasing the locking ring. The cam ring is biased for urging the coacting wedge surfaces into engagement.

Abstract: A drive ram, particularly for a yarn winder, has the piston rod freely movable relative to both the piston and the ram cylinder in a first condition in which a locking washer is perpendicular to the longitudinal axis of the piston rod. Upon application of fluid pressure to effect relative movement of the piston and the cylinder, the locking washer is spring-urged against a wedge-like tipping washer which skews the lockingwasher and causes it to clamp the piston rod whereby the piston rod is then driven by the ram through a predetermined travel, from a starting position which is governed only by the diameter of the package at the time of operation of the package lift mechanism.This allows a virtually constant lift travel of the ram, regardless of the diameter of the package at the time of operation of the ram.

Abstract: A pull-type booster for a vehicle includes a main body having an internal space; a movable body including a head portion and a cylindrical portion formed integrally with the head portion, the head portion being arranged in the internal space and partitioning the internal space into a lower pressure chamber at one side and a control chamber at another side, and the cylindrical portion projecting from the main body at the other side; a through hole formed in the movable body; a pull input rod extending across the low pressure chamber and projecting through a seal member from the main body at the one side; a plunger arranged slidably in the through hole and combined with a head portion of the pull input rod; a valve member arranged in the through hole and operated by the plunger for generating pressure difference between the lower pressure chamber and the control chamber and moving the movable body in the direction of the lower pressure chamber, a power transmission assembly arranged in an opening end portion of

Abstract: In a device for the production of pressure by means of a piston (2), the piston (2) which has a rectangular cross-section is arranged in a cylinder (1) whose cylinder bore has also a rectangular cross-section. A cylindrical sleeve (3) is arranged inside the cylinder (1) and its edges rest tightly against two parallel surfaces (11, 12) located opposite each other. When a pressure agent is led into the interior of the sleeve (3) over a cylinder wall (9), the sleeve (3) pushes the piston (2) with a high pressure out of the cylinder block.

Abstract: A planar body spring attaches the inboard shoe and lining assembly to the piston of a disc brake caliper. The spring also serves as a shield for the piston boot seal.

Abstract: Pneumatic diaphragm actuator having a driving rod for acting upon a push rod of a position controller through a return spring, wherein an inversion device when inserted between the diaphragm actuator and the position controller, inverts the force exerted upon the push rod by the driving rod.

Abstract: An oil well sucker well shock absorber having a cylindrical outer casing, a spring disposed therewithin, a plurality of apertures extending through the casing and allowing fluid communication with upwardly extending slidably disposed piston plunger rod attaching device. Thus, unwanted play and travel and its associated wear can be minimized by force dissipation through the associated spring within the casing.

Abstract: An improved double-acting fluid cylinder with primary and secondary chambers of tandem construction, wherein the primary chamber is utilized to provide ram motion in a first direction and wherein the tandemly arranged secondary chamber is provided with a single biasing spring means to resiliently bias the secondary piston and to buffer and control the rate of motion induced in the ram, and also to drive the ram in a direction opposite the stroke of the first direction and at a time subsequent to the stroke so as to temper the ultimate amplitude or extent of motion induced in the ram in response to forces applied within the primary chamber.

Abstract: A force transmitting fluid actuator for use with a control device wherein an actuator member, movable within an actuator housing, actuates the control device due to the urging force of a plurality of pistons which can be selectively pressurized in unitary increments. The plurality of pistons are disposed within pressure chambers formed in the actuator housing in a symmetrical ring-shaped arrangement concentric to a single pressure chamber disposed on the vertical axis of the housing. A number of passageways interconnect the plurality of pressure chambers to form groupings of pressure chambers which act simultaneously in response to operation of a solenoid valve associated with each passageway. In addition to the symmetrical arrangement of the pressure chambers, the valve and passageway arrangement provide for a symmetric pressurization of the pressure chambers thereby resulting in a balanced force being exerted on the actuator.

Abstract: In volumetric dosing of liquids, equal mounts of a liquid must be added in equal time intervals to a primary flow which may consist of either liquid or gaseous substances. This is done most accurately by means of piston pumps as dosing pumps.The dosing pump according to the invention affords simple design and reliable operation. The piston stroke is fixed by means of a collar in a limiting chamber. The compensation required to prevent double fits and compensates for wear, tolerances, etc. is obtained by an elastic length equalizer in the connecting rod. This arrangement leads to being normally represented as a rigid connection which, however, in the two end positions of the piston, when the forces rise suddenly due to the collar striking the limiters, equalizes these forces over the length.

Abstract: An activating apparatus or device, for example for a valve in a liquid conveying system operated by means of a vacuum. The activating apparatus comprises a normally latched or locked operating device which by means of a spring, or the like, is connected to a force accumulator. The force accumulator is moved by the influence of vacuum and thereby tightens the spring which, when a lock arm disengages from the operating device, is released so that the operating device is moved, and thereby opens the valve.

Abstract: A pressurizing syringe includes one or more dimple-shaped snapdomes located between the plunger and piston of a syringe assembly. When the plunger is depressed, the snapdomes will deflect at a known pressure level, giving the user a tactile and audible indication that the syringe is compressing fluid at the desired pressure. A method for using a pressurizing syringe to pressurize the fluid-filled compartment of an ultrasonic scan head is also described.

Abstract: A remote air operator for an air valve which includes a manual override and indicator means. The remote air operator includes a piston having an overtravel push pin which is adapted to be operated by an air pressure signal from a remote location. The push pin is adapted to directly engage the end of a valve spool and move the same from a first position to a second position. The push pin is slidably mounted in a remote control piston operated by the air pressure signal, and it is normally biased to an operative position by an overtravel spring. A second manual operator piston is slidably mounted in the remote operator piston and it is retained therein, and engages one end of the overtravel spring. A manual operator rod is attached to the manual operator piston to permit manual operation of the push pin to operate a valve spool.

Abstract: A power-servo booster having a shortened overall length and lighter weight. A fitting member disposed within a connection hole in a power piston is cylindrically formed and a reaction disk is disposed within the cylindrical fitting member. An annular groove is formed in an outer periphery at the bottom of the connection hole and the power piston. A portion of the power piston within the annular groove projects towards the push rod and the reaction disk disposed within the fitting member is placed within the connection hole so that it can contact with an end surface of the projecting portion. The peripheral end of the fitting member is adapted to fit within the annular groove. An annular gap is formed between the fitting member and the bottom of the annular groove to allow for deformation of the reaction disk.

Abstract: A shock absorbing device in a press is formed by having a telescopically sliding member fastened to the punch plate of the press and a stopper member fastened to the die plate of the press and placing an oil of high viscosity between the post and the outer cylinder of the telescopically sliding member. This shock absorbing device damps the unloading impact produced when the punch of the press collides with a workpiece and fractures it and, thereby, abates the noise generated from the press, the tool and the workpiece.

Abstract: A pump driving mechanism of this applications is formed by supporting a piston body 3 provided with a piston rod 9 and an elastic arm 18 movable in directions vertical to reciprocally moving directions of the piston body, between respective free ends of a pair of elastic leg pieces 16 and 17 fixed at one end and freed at the other end, and connecting an eccentric shaft 23 driven to be rotated by a motor 22 to a shaft bearing 21 formed at a free end of the elastic arm 18, whereby a low noise reciprocating movement within a cylinder 14 is provided to a piston rod 9 by rotations of the eccentric shaft 23.

Abstract: A vibrating ripper having quadrilateral linkage. The linkage, equipped with a remote hydraulic control therefor for making running adjustments as afforded by a depth actuator cylinder during ripping and possibly, but not necessarily, as afforded by a pitch actuator cylinder which also can be provided, has a raised-carry position and a lowered-rip position in which it has a vibratory rocking action, and defines a pitch axis fixed in the linkage and shifting therewith during depth changes. Strategic upper level placement of an elastic strut connection which is provided, and diagonal placement of the lift or depth cylinder connection to the draft frame or to the ripper beam and shank assembly, locate the pitch axis at the node of the rocking assembly as it vibrates.

Abstract: A piston rod is formed of fiber reinforced material so arranged that an elastic connecting zone is provided between the rod and the piston, thereby avoiding bolting one end of the piston rod to the piston. The cavity inside the piston has a dovetail recess. The fibers are anchored in the cavity and recess by embedding the fibers, which fan out in a uniform distribution from said elastic connecting zone, in a synthetic embedding material.

Abstract: A control motor of the type used to control carburetor choke valves wherein the motor has an output member acted on by a pair of springs, one of which is effective to urge the choke valve towards its closed position when the engine is not operating and the other of which resiliently resists opening movement of the choke valve.

Abstract: A booster utilizing fluid pressure which is provided with a power piston disposed between a constant-pressure chamber and a variable-pressure chamber for being actuated by the pressure difference between the two chambers, a control valve actuated by shifting operation of the input member for producing the pressure difference between the constant-pressure chamber and the variable-pressure chamber, a control member disposed, being in connection with the control valve, relatively movably to the power piston in the operation direction thereof, and a spring disposed between the control member and the power piston, whereby the elastic force variation of the spring, due to the relative shifting of the control member and the power piston while in operation, may be transferred by the control member to the control valve for regulating the operation of the control valve.

Abstract: A valve is provided which includes a poppet enclosed in a plug of plastic material, such as Teflon, and which is biased against a seat by a compression spring so that a positive seal is provided even in the presence of cold flow in the plastic plug. A valve stem engages the poppet, and it serves to pull the poppet and plug away from the seat against the force of the spring when the valve is opened, and to force the poppet and plug against the seat when the valve is closed. The valve is closed by a pressurized fluid, such as air, and is opened by means of a spring when the air pressure is removed. The Teflon plug is provided with a sharp corner which contacts a conical seat creating a seal when the valve is closed. The sharp corner of the plug wipes the seat of the debris as the valve is opened and closed.

Abstract: A joint for connecting a driving means to a driven means for reciprocating movement wherein a confined deformable, non-compressible material is in contact with a surface area of the driving means and with a surface area of the driven means and when a force is applied to the driving means to move the driving means toward the driven means, the deformable, non-compressible material deforms to compensate for any misalignment between the driving means and the driven means until is reaches it non-compressible state so that a uniform force is then transmitted across the surface area of the driven means in one direction to move the driven means.