Abstract: A valve for an automotive brake master cylinder piston is disposed at the end of forward stroke of the brake master cylinder piston in a passage defined along the axis of the master cylinder piston and communicating mutually an oil reservoir and an oil outlet, and is adapted to close and open the passage when abutting upon the departing from a side wall surface of the end of forward stoke of the master cylinder piston in accordance with a forward stroke motion and a return stroke motion of the master cylinder piston.

Abstract: A conveyorized transport apparatus has an overhead rail system for transporting articles on a suspended trolley from one location to another. A moveable rail section in the system has a pivotal connection with an adjacent rail section to pivot the moveable section from a conveying position and a diverted position in which articles are delivered closer to a work station disposed laterally of the rail system.

Abstract: The invention relates to an improvement in variable capacity diaphragm pumps. According to the invention, the piston is driven by a cam fast with the wheel of a speed reducing gear pair, the eccentric/wheel assembly rotating idly on a fixzed shaft of which the axis is perpendicular to the axis of the piston, the piston terminating in a U-shaped shank of which the wings are perpendicular to the axis of the piston and spaced apart by a length slightly greater than the diameter of the eccentric, and of which the base is perpendicular to said fixed shaft and is provided with a longitudinal groove parallel to the axis of the piston which is traversed by the fixed shaft, the eccentric being housed between the wings of the shank. The invention is more particularly applicable to the manufacture of diaphagm pumps.

Abstract: Herein disclosed is an accumulator for suppressing an abrupt rise in and suppressing the pressure of a fluid. In this accumulator, a coil spring for urging a piston fitted in a cylinder in the axial direction thereof is secured on the pistion by securing it on one side of a plate and by securing the plate on the piston. The plate is formed with a cylindrical nub, on which is fitted on turn of the coil spring. This coil spring is secured on the plate by deforming the nub radially outward to trap that one turn of the coil spring. The plate in turn is secured in a bottomed cylindrical hollow portion which is formed in the piston.

Abstract: In an accumulator including a piston which slides freely in a cylinder and a spring which presses the piston, a hole of the piston end where, at the bottom, a large diameter section is made, and small diameter section whose diameter is smaller than that of the large diameter section is located at another side of the large diameter section is located at another side of the large diameter section against the bottom of the hole is provided, and the spring assembly having the retaining member and the coil spring whose one end is fixed to the retaining member and another end is free is provided, and the snap ring is provided to hold the retaining member between the bottom of the hole and the snap ring which is installed in the large diameter section with radial expansion force, so that the spring assembly is installed in the hole of the piston.

Abstract: A valve positioning device capable of comparing the travel position of an output shaft of a diaphragm actuator or cylinder with the pressure level of a pneumatic input signal and further being capable of manipulating the pressure of a separate air signal piped to said diaphragm actuator or cylinder in order to correct any imbalance between said stem position and a given pneumatic signal level; wherein said valve positioning device is further capable of varying its dynamic response by built in adjustment means.

Abstract: The invention relates to a linear motor with a cylinder (5) containing a piston linked to a piston rod (8) projecting from either of the end faces of the cylinder (5). To secure the piston rod against torsion and rotation, a guide comprising at least two guide ribs (22, 22') arranged on the circumference of the cylinder (5) is provided, these ribs being arranged at a distance from each other and extending in the axial direction of the cylinder (5). A slide (19) seated on the outside of the cylinder (5) and guided on the guide ribs (22, 22') while at least partially encompassing them is fixed to the piston rod (8).

Abstract: A hydraulic or pneumatic oscillating piston motor has a housing (1), a driven shaft (2) mounted in the housing for rotation and an oscillating piston (3) that is fixed to the shaft. The piston has two lever arms (49,8) having pressure areas of different size, which arms are sealed with respect to the housing (1) dividing the housing (1) into two working spaces (4,5) into which a pressure medium can be introduced. The oscillating piston (3), actuated by the pressure medium, is free to oscillate back and forth through a maximum angle of rotation which is determined by means of a stop (38) and the housing. The first lever arm is designated in the form of a bushing (49) whose shell surface along its external periphery is at least partly surrounded by a coaxial shell seal (64). This seal has uniformly distributed, rib-like sealing lips (75) along its periphery and interacts with a opposite surface (9) attached rigidly to the housing (1). The maximum angle of rotation of the oscillating piston (3) is at least 180.

Abstract: An apparatus for readjusting first and second adjustable pressure relief poppet valves to vent the fluid pressure moving a piston when the piston is at the ends of a second work stroke which is of a length less than a first work stroke for which the poppet valves are adjusted. Each of the poppet valves is carried by the piston and includes a valve seat and a valve member movable relative to the valve seat. The piston is disposed in a fluid chamber defined by a housing. The piston divides the fluid chamber into first and second chamber portions. One of the chamber portions is pressurized and the other is vented to move the piston in a work stroke. The apparatus includes a member supported by the housing for moving the seat of the second poppet valve outwardly relative to the piston in response to the member moving relative to the housing and engaging the seat of the first poppet valve to move the seat of the first poppet valve inwardly relative to the piston.

Abstract: The invention relates to an abutment arrangement for limiting the stroke of a piston and cylinder actuator. The abutment arrangement comprises an integrated detector which may be in the form of a proximity feeler screwed into a guard housing. The abutment arrangement may be furthermore so designed that it prevents twisting of the piston rod in the cylinder.

Abstract: A cylinder actuator has a cylinder barrel, a piston running axially therein, a piston rod running through a first end plate and a stop for limiting motion of the plunger (made up of the piston and its piston rod) by cooperation with an abutment on the plunger. The maximum extent to which the piston rod may be moved out of the barrel is adjustable. The stop mounted within the cylinder is in the form of a radial projection mounted on a stop rod and able to be adjusted in the axial direction. The stop rod extends from the second cylinder and plate along a coaxial hole in the stop rod. This hole has a part of small diameter adjacent to said second end plate and a part of large diameter remote therefrom, said large and small diameters joining at a radial shoulder in said stop rod, said shoulder forming said abutment. The radial projection is located in the hole part with the large diameter.

Abstract: A fluid driven oscillating piston motor is made up of a housing, a shaft mounted in the housing so that it may be oscillated, and a piston running out from the shaft for turning it. The piston divides a space in the housing into two working spaces that are alternately pressurized and relieved of pressure so that the piston is turned through an angle as limited by an adjustable system of stops. The housing is split up into a shell and a lid therefor. Inner faces of the shell engaged by the piston are free or joins because it is made by molding or pressure casting. The shell and the lid are held together by a band with a clamping effect. The piston is joined to the shaft by means of a bush with internal splines fitted into splines of the shaft. A piston seal placed round the shaft is molded in one piece on the oscillating piston.

Abstract: The novel slave pump having a piston rod having a fluid passage through which catalyst is discharged for ultimate use. The slave pump also has an exterior casing which holds it together without contacting the catalyst or other fluids being pumped.A novel combination of a slave pump as just described driven by a master pump having a cylinder and a piston rod, a slave pump having a cylinder and a piston rod, a first means interconnecting the piston rod of the master pump with the piston rod of the slave pump, and a second means connecting the cylinder of the master pump with the cylinder of the slave pump.The position of the slave pump can be adjusted with respect to the master pump to change the amount of catalyst or other fluid delivered by said slave pump per stroke of the slave pump piston. The interconnecting linkages are provided with spherical connections to mitigate wear and binding due to misalignment.

Abstract: An improved switch point setting device for fluid process sensors monitoring a process pressure, including a cylindrical housing, an elongated threaded shaft rotatably mounted in the housing, and a movable post member with a threaded base portion threadably mounted on the threaded shaft within the housing and a dog-leg post portion extending from the housing to form a pressure set point. A coil spring within the housing biases the threaded base portion in positive threaded engagement with the threaded shaft. An O-ring provided around the base portion on each side of the post portion enables threadable movement of the base portion during set point adjustment while otherwise maintaining the base portion reliably in position.

Abstract: A spring loaded safety valve includes a control device which admits the pressurized medium to a supplemental loading system which consists of a spring housing which serves as a cylinder for a spring retainer which serves as a supplemental loading piston that is arranged about two adjustable sleeves which are arranged around the valve stem and which control the response pressure and the supplemental loading of the valve spring.

Abstract: A cylinder device has a main body having therein a cylinder having an inner closed end and an outer open end, a piston slidably fitted in the cylinder and having a small diameter portion on the inner end thereof, a liquid pressure chamber defined between the piston and the inner end of the cylinder, a cup seal fitted around the small diameter portion of the piston with a lip portion thereof directed toward the liquid pressure chamber and sealingly engaged with the cylinder, an annular retainer disposed in the liquid pressure chamber, a spring acting between the piston and the annular retainer to urge the retainer against the inner end of the cylinder, the configuration of the annular retainer being such that when the piston is at the innermost position in the cylinder the annular retainer engages the lip portion of the cup seal to prevent the lip portion from radially inward deflection.

Abstract: Variable displacement cam driven piston pump having means for the stepless adjustment of the length of the pump stroke. The stroke adjusting means has pivotally mounted spaced parallel levers, the levers being interposed between the cam and the piston of the pump, the levers being mutually coupled in their movement by a means adjustably arranged along the length of said levers, said levers being disposed on the opposite sides of a plane defined by the contact points between the lever coupling means and the levers.

Abstract: An improvement for a press, more particularly a press for compacting powder material, provided with a mechanical toggle mechanism actuated ram disposed above the die supporting bed or table of the press. The mechanical toggle mechanism is in turn actuated by the press drive. The pivot support for the ram upper toggle arm is independently reciprocated by a fluid cylinder activated in timed relationship with the mechanical toggle action such as to provide reciprocation of the ram independently of or in addition to the reciprocation caused by the toggle mechanism. Adjustable abutment means are provided for adjustably setting the extreme positions of the fluid cylinder reciprocating member.

Abstract: A reciprocating adjustable stroke positive displacement fluid pump is provided with an expandable chamber driven in the displacement or feed direction by an eccentric drive acting through a driven member. The eccentric drive moves the expandable chamber to its limit of excursion in the displacement or feed direction. Adjustment means cooperating with stop means limits the excursion of the driven member and the expansion of the expandable chamber in the suction or intake direction so that the amount of fluid pumped is continuously adjustable from no volume to the capacity of the expandable chamber by positioning the stop means. The pump is further provided with means for driving a plurality of individually adjustable pumps from the same drive motor and with means for equalizing the load on the pump motor.

Abstract: In a liquid product measuring pump driven by an air motor having air valve controls for reversing the reciprocating motion of the air motor at the end of the stroke for controlling the liquid product measuring, an adjustable stop assembly including a quickly replaceable stop bar with an extendible threaded rod therein, the rod being minutely adjustable by an insert fitting on the mounting for the stop bar.

Abstract: A piston-cylinder unit for use in a disc brake assembly includes a cylinder and a hydraulically actuated piston received in the cylinder for axial movement therein. The unit has a flexible seal member with its opposite ends attached in sealing engagement to respective axially opposed portions of the piston and cylinder for elastic expansion and contraction in the axial direction. The flexible seal member and the opposing portions of the piston and cylinder form a chamber for receiving fluid pressure for actuation of the piston.

Abstract: An injector for delivering fuel to a combustion engine in which the pump chamber of each fuel pump has a volume adjustable by control means, is provided with a displacer body which is connected to an armature of an electromagnet. The stroke of the displacer body is limited by an adjustable stop and should be influenced as less as possible by wear due to stopping a considerable mass of the armature every time. In order to expose the injector less to wear the displacer body is coupled with the armature through an elastic coupling.

Abstract: A lever mechanism having an output end and an input end wherein the input end is pivotally mounted to a fixed support and provided with a track portion. The track portion has a spaced apart relationship to the pivot axis of the lever and is provided with a generally V-shaped portion and lateral side portions oppositely extending therefrom. A reference force is applied through a roller member which is positioned along the track by a variable input position signal applied thereto. The apex of the V-shaped portion is on a line through the pivot axis such that with the roller member held in a bottomed position and engaging both sides of the V-shaped portion there is no input moment applied to the lever mechanism and movement of the roller member in either direction from a null position produces a clockwise or counterclockwise motion of the output end of the lever mechanism, depending upon the direction of movement of the output end in response to the roller movement.