Abstract: A water-activated locking mechanism has a housing with a chamber formed therein. Compressed water-absorbent fiber pellets are housed in the chamber. Ports in the housing allow water to enter the chamber when the housing is immersed in water. Mounted in the housing is a slidable piston assembly that is biased towards the chamber with a first end of the piston assembly residing in the chamber. A pin assembly is slidably mounted in the housing at an angle relative to the piston assembly. The pin assembly is biased towards the piston assembly with one end of the pin assembly contacting an indented portion of the piston assembly to define a first position of the pin assembly. When the housing is immersed in water, the fiber pellets expand and apply a force to the first end of the piston assembly. The piston assembly then slides within the housing with the indented portion thereof moving past the pin assembly.

Abstract: A simplified piston pump which is featured in that the number of components for the assembling thereof can be minimized, that the assembling thereof can be simplified, and low in manufacturing cost thereof. This simplified piston pump comprises; a cylinder having at least one protrusion formed on the inner surface of a proximal end portion of said cylinder for preventing the piston from slipping out; and a piston shaft having a structure wherein the outer surface of the piston shaft is contacted with the inner surface of the cylinder to prevent the decentering of the piston shaft and wherein a groove is formed thereon to ensure the reciprocative movement of the piston.

Abstract: A piston support, in particular for a driving piston (8) of a setting tool, has a cylindrical section (10a) followed by a wedge-shaped section (10) extending toward the trailing end of the driving piston (8) and with a wedge-shaped surface (18) inclined inwardly towards the piston central axis (16). At least one braking element (23), presses against the cylindrical section (10a) in the ready-to-fire position of the driving piston (8) and a pressure force on the driving piston (8) reduces when the braking element (23) on movement of the driving piston (8) in the forward direction of travel, comes to rest opposite the wedge-shaped surface (18). When this is done, the driving piston can be guided smoothly and returned under braking into its ready-to-fire position, and held there securely.

Abstract: A manual air pump includes an outer cylinder comprising a chamber therein, a head provided to an end of the outer cylinder, the head including an outlet passage communicated with the chamber for supplying air to an object to be inflated, and an inner cylinder reciprocatingly mounted in the outer cylinder. An outer piston is attached to an end of the inner cylinder to move therewith and includes a passage for communicating a longitudinal bore of the inner cylinder with one of the outlet passage of the head and the chamber of the outer cylinder. A piston rod is reciprocatingly mounted in longitudinal bore of the inner cylinder and an inner piston is attached to an end of the piston rod to move therewith. A handle is secured to the other end of the piston rod to move therewith. The inner cylinder is rotatable relative to the outer cylinder.

Abstract: A retaining unit 8 is constituted by a first retainer 25 and a second retainer 26. The first retainer 25 and the second retainer 26 are mounted, respectively, on a bleeder screw 7 of a cylinder body 11 and a projecting portion of a piston rod 19. While the piston rod 19 is being forced in a cylinder bore 13, first and second engagement portions 25d, 26e are brought into engagement with each other, and the piston rod 19 is retained in a retracted state. The engaged state of the first and second engagement portions 25d, 26e is released by removing the first retainer 25 from the bleeder screw 7, whereby the piston rod 19 is allowed to extend.

Abstract: A floor pump includes a cylinder and a piston rod having a lower end reciprocatingly received in the cylinder and an upper end beyond the cylinder. A handle is attached to the upper end of the piston rod for manual inflation operation. The handle includes a handle body with a second retainer formed thereon. A positioning member includes an end in pivotal connection with one of the handle body and the cylinder. The handle is retained in place when the other end of the positioning member engages with the second retainer on the handle. The handle is operable when the other end of the positioning member engages with the first retainer on the cylinder.

Abstract: A spindle assembly for reliably locking a vehicle wheel to a vehicle. The spindle assembly includes a slotted sleeve that is engageable with a central opening of the wheel, to cooperate with a plurality of lugs in locking the wheel in place. The slotted sleeve incorporates a number of deflectable fingers, and a mandrel can be reciprocated along the sleeve's longitudinal axis, between an extended position and a retracted position. When the mandrel is in its extended position, the sleeve's deflectable fingers are moved to a position that allows the wheel to be removed and replaced, whereas when the mandrel is in its retracted position, the fingers are moved into engagement with the wheel, to positively lock the wheel in place. A compressible coil spring biases the mandrel to its retracted position, but the application of a positive hydraulic pressure to the spindle assembly overcomes this spring bias, to move the mandrel to its retracted position.

Abstract: A side loading refuse collection vehicle has a lift arm extendible and rotatable relative to the vehicle, the lift arm carrying grabber apparatus at an end for grasping a refuse container which may be lifted and dumped into the top of the body of the vehicle. The lift arm which is guided to move in a path so as to grasp the container, raise it, dump it and return it to its initial position, is driven toward and away from the vehicle by a first hydraulic drive cylinder and lifted and lowered by a second hydraulic drive cylinder. The first hydraulic drive cylinder has a drive rod on which a locking bolt is secured and may be captured in a receptacle of a keeper when the rod is in the fully retracted position to lock the arm against inadvertent and undesirable extension outwardly away from the vehicle. The keeper is pivotally mounted and moved by the output rod of a pneumatic cylinder to permit the bolt to be released from the receptacle when the hydraulic drive is activated.

Abstract: In order to facilitate a simple and cost-effective manufacture of a hydraulic cylinder, the cylinder tube (3) is provided as smooth stock with connectors (9) set up, preferably stud-welded, for the hydraulic attachments (1,2). Assembly parts provided in the cylindrical tube (3), such as the base (10), seal (7), guide casing (8) and fixing device (4), are held inside the cylindrical tube (3) by means of non-cut, indented locking regions (11, 12, 13).

Abstract: A drive unit is designed as a diaphragm drive with return springs for shifting an associated actuator, connected by a diaphragm plate and a driving diaphragm, into a safety position. The drive unit also includes actuating springs that are held in a compressed state by two nested sleeve-shaped counterbearings that are locked during normal operation and located coaxially with respect to the return springs. The lock is formed by a temperature-dependent joint.

Abstract: In a brake device of a linear moving body, a brake member is provided with a hole and a rod is fitted to the hole in clearance fit, and the brake member is moved slantwise and rotational moment is produced in the brake member thereby brake is applied to the rod in relative motion. The brake member is arranged movable slantwise using position as fulcrum remote from the axial center of the rod, and notched portions having width smaller than diameter of the hole are formed at symmetric positions within the hole along a plane including the fulcrum and the axial center of the rod. In this brake device, rotational force (rotational moment) is supplied to the brake member, and drag is produced at a fitting surface within the hole and frictional force due to the drag is made brake force and frictional force due to the drag of the fitting surface is made reaction force of the rotational force.

Abstract: A transport locking system for a movable-deck trailer includes a telescoping sleeve which is positioned in parallel with a main deck piston and cylinder unit beneath the trailer deck. The main cylinder and the telescoping sleeve are placed in a neutral position when the deck is in the transport position, extended to raise the deck to a dock high position, and retracted to lower the deck to a ramp position. A locking bar is pivotably mounted atop the telescoping sleeve and the locking bar is controlled by a locking piston and cylinder unit to selectively engage or disengage a recess in the sleeve to thereby lock or unlock the sleeve, and thus constrain the deck to the transport position. A switching and control system is provided to coordinate the control of the main deck piston and cylinder unit with the control of the locking piston and cylinder unit.

Abstract: A unique indicator system is incorporated into a release tool for a spring brake actuator. The indicator provides an indication of when the release tool has is fully released. The release tool is preferably of the type wherein a threaded member does not extend outwardly of the actuator during caging of the power spring. The inventive indicator is biased outwardly of the actuator when the release bolt has even partially caged the power spring. It is only when release bolt is fully released that the indicator is pulled inwardly. Thus, an observer has a visual indication of when the power spring caging mechanism has been fully released.

Abstract: A tool for lifting a tie rod off of the refueling floor and lowering the tie rod into the downcomer annulus of a boiling water reactor during a shroud repair operation. The tie rod lifting tool can be attached to the end of a strongback suspended from a hoisting cable or to the end of the cable itself. One embodiment of the tie rod lifting tool has redundant locking pins which interlock with corresponding holes formed in the end of the tie rod. The locking pins are moved out of locking engagement in response to actuation of respective pneumatic cylinders. The locking pins are latched so that the tie rod cannot be disengaged from the lifting tool unless the latches are first manually released by an operator using a handling pole.

Abstract: An improved welding apparatus and method of use including a pair of opposed electrodes mounted on arms which are fixed against outward displacement during the application of the welding current. One of the arms includes a pneumatic cylinder for moving an electrode to and away from the work piece. The cylinder includes a piston rod attached to a clutch by a ball screw mechanism. A brake assembly is connected to the unidirectional clutch to prevent outward displacement of the electrodes during expansion of a weld nugget and permitting inward movement of the electrodes to provide indentation of the weld after the nugget softens.

Abstract: An axle driving apparatus which is so constructed that an input pulley for engine power is set lower in mounting position with respect to the axis of a driving axle so as to enable the platform of a vehicle to be lowered. The engine position lowers to promote miniaturization, a lower center of gravity and running stability of the vehicle. For maintenance of the transmission for driving the axle, the entire axle driving apparatus need not be removed from the frame of the vehicle. A bearing for supporting the axle to the casing is held with exact dimensional precision so as not to cause a backlash on the axle, to thereby prolong the life span of the bearing. The axle is ensured to be sealed, the number of mounting bolts for the casing need not be increased in order to improve rigidity, and the casing is strong so that the assembly time for the axle driving apparatus is minimized.

Abstract: An internal safety valve for preventing the discharge chute from rapidly falling due a sudden loss of hydraulic fluid pressure. A safety valve assembly for use in a hydraulic cylinder consisting of a safety valve located in the barrel of a hydraulic cylinder. The moveable piston of the hydraulic cylinder has a cavity for receiving the safety valve therein. The safety valve is actuated when the flow leaving the chute lift cylinder exceeds a predetermined flow. The valve immediately stops the hydraulic fluid from leaving the chute lift cylinder maintaining the position of the discharge chute.

Abstract: A positioning apparatus can perform high-accuracy positioning in a short time without a Curvic (trademark) or positioning coupling. With provision of a hydraulic motor having a rotary shaft fixed to a turret head and a hollow type rotary encoder for detecting the angle of rotation of the rotary shaft, rotation of the hydraulic motor is controlled by a controller via a control valve. Locking of the rotary shaft is performed by a rebound force of a spring provided in a hydraulic cylinder by pressing a pad provided at a tip portion of a rod against a disk. Unlocking of the rotary shaft is performed by supplying a hydraulic fluid into a cylinder chamber by switching a directional control valve.

Abstract: A control force input system for a balance beam pneumatic valve positioner which does not allow the controlled apparatus to make a full travel motion when the overall control signal is removed. The control force is transmitted to the balance beam or other force summing bar using a linear solenoid coupled to a control spring coupled to the balance beam. When the motive power control signal is removed from the linear solenoid, the balance beam establishes an equilibrium position based on the existing position of the linear solenoid. Split wedges are repelled from the linear solenoid when a control signal is applied, releasing the solenoid shaft for movement. Alternatively, split slides are repelled from each other when a control signal is applied, releasing the solenoid shaft bias spring. When the control signal is removed, the split wedges or split slides are biased and attracted to the solenoid, locking the solenoid shaft in position. A variation for use with a current to pressure transducer is detailed.

Abstract: A control force input system for a balance beam pneumatic valve positioner which does not allow the controlled apparatus to make a full travel motion when the overall control signal is removed. The control force is transmitted to the balance beam or other force summing bar using a linear solenoid coupled to a control spring coupled to the balance beam. When the motive power control signal is removed from the linear solenoid, the balance beam establishes an equilibrium position based on the existing position of the linear solenoid. The solenoid shaft extends into a captive cylinder. A piston connected to the solenoid shaft is located in the captive cylinder and forms two chambers in the cylinder. A solenoid valve connects a port in each chamber. When the solenoid valve is activated, the piston is free to travel. When the solenoid valve is deactivated, as when the control signal is removed, the piston is held in position, locking the solenoid shaft in position.

Abstract: A main tail lock for a hydraulic tail trailer comprising a pair of spaced-apart locks which are pivotally secured to the frame of the tail and which are pivoted between locked and unlocked positions by a lock cylinder. When the locks are in their unlocked position, the tail cylinders for the tail may raise or lower the tail of the trailer. When the locks are in their locked position, the tail cylinders are prevented from retracting thereby preventing the lowering of the tail with respect to the main frame of the trailer.

Abstract: A power cylinder assembly including means to positively lock the piston rod of the assembly in the forward extended position of the cylinder assembly. The locking means includes a pair of cam plates that are moved radially outwardly into locking engagement with lock slots defined by inserts positioned in the wall of the cylinder with the radially outward movement of the locking plates being generated by a lost motion connection between the piston and the piston rod in the form of a pin and slot connection. The pin is carried by the piston rod and coacts with cam slots in the cam plates to move the cam plates radially outwardly at the end of the forward stroking movement of the piston assembly so that the final forward movement of the piston generates the radially outward movement of the lock plates.

Abstract: The positively acting mechanism comprises a jack (2) with a rod (10) connected, at one of its ends, to a member whose actuation or retention it ensures, and, at its other end, to a thrust piece (16), on which a spring (18) comes to bear, in order to actuate or retain the member. An axle (25) parallel to the rod (10) of the jack is rotatably mounted in a housing (14) fixed relative to the body (3) of the jack (2) and has a threaded part (26) in engagement with a nut (34) forming an engagement fork for the thrust piece (16) of the rod (10). The axle (25) has an end part (30) engaging with a tool allowing the axle (25) to be set in rotation remotely. It is thus possible, in the event of failure of the jack, to rotate the axle (25) and displace the rod (10) of the jack (2) in the direction of release of the mechanism.

Abstract: An improved self-locking piston for use in ram blowout preventers has a hollow cylindrical outer piston which slidably contains an inner locking piston. The inner locking piston has a tapered, frusto-conically shaped front section with a plurality of circumferentially spaced apart, sloping flats formed therein. Apertures provided through the outer wall surface of the main outer piston contain radially slidable driver segments each having a sloping surface complementary to the sloping surface of the flats on the inner piston. Forward motion of the inner piston relative to the outer piston forces the driver segments radially outwards in the apertures. A plurality of locking segments, one each positioned in a groove rearward of and communicating with a separate one of each of the apertures is provided. Each locking segment has a sloping lower front surface adapted to sliding engagement by the sloping upper rear surface of a driver segment.

Abstract: A cylinder locking device comprises a thick cylindrical brake member whose inner diameter is slightly smaller than the outer diameter of a piston rod to be locked. The cylindrical brake member is disposed in a casing and fitted on the piston rod, and has a slit opening formed axially therein. Two receive rollers are disposed oppositely and rotatably on both margins of the slit opening. An actuator having a tapered portion is disposed in the casing. The locking of the piston rod is released when the tapered portion is forced in between the receive rollers to expand the cylindrical brake member. When the actuator is not in actuation, the piston rod is strongly gripped and locked by the elasticity in the diameter-decreasing direction of the cylindrical brake member.

Abstract: A new and improved ram locking apparatus for blowout preventer rams which allows the rams to be locked in the closed position and compensates for wear on the sealing elements of the rams. The device consists of a tubular cross containing a rod extension with a tapered end attached to the ram, a hydraulically reciprocal piston with a wedging surface to coact with the tapered end of the rod extensions and hydraulic fluid ports. The tapered end of the rod and the wedge surface of the piston have serrated surfaces to increase friction between the wedging surfaces and provide a self-locking engagement and thereby provide a small compact apparatus.

Abstract: The present invention discloses a device for restricting the movement of a hydraulically actuated rudder assembly on a large ocean-going vessel during failure of the hydraulic system. It comprises a half-collar made of a material that is substantially incompressible along its lengthwise axis and is adapted to fit over a ram rod or a guide rod in a steering assembly between a cross-head and a ram rod sleeve or guide rod. The length of the half-collar is minimally less than the length between the cross-head and the terminus of the ram rod or guide rod when the rudder is in a neutral position.

Abstract: A door closer is set forth having a housing, a plunger rod in the housing with a plunger at the inner end of the rod, and a main spring around the rod between the plunger and a housing end for urging the rod into the housing. An actuator carried at the housing end with an opening for the rod and mounted for transverse sliding motion relative to the rod, with a spring for urging the actuator into a latch space in the rod is utilized. With the door closer connected to a door, the actuator slides into the latch space when the door has been opened, to hold the door open. A further opening movement raises the actuator out of the latch space and a sleeve maintains the actuator raised, permitting closing of the door.

Abstract: Disclosed is a fluid powered linear slide employing either a rodless or rod-type cylinder. The slide includes a base which has a movable carriage mounted thereon which moves reciprocably in response to pressurized fluid being fed to the cylinder. In the embodiment employing a rod-type cylinder, a pair of tubular rods are mounted on the base in a fixed position and attached to a piston stationarily mounted inside the cylinder which is movably mounted and attached to the carriage. In the other embodiment, the carriage is mounted on a bracket which is attached to the rodless cylinder carried in the housing for the cylinder. The base has linear guideways therein, each guideway carrying one or more stop members which are manually adjustable and electrically or fluidly actuated.

Abstract: An assembly for stopping and retaining a floating piston within a closed cylinder includes a plurality of retaining ring segments which are seated within a groove provided in the internal wall of the cylinder. The retaining ring segments are held securely in place by a plurality of retaining plates which are clamped together by a plurality of threaded fasteners. The assembly is positioned deep within the cylinder at a specific location by a special tool. This tool also activates portions of the stop assembly to initially seat the retaining ring segments in the groove. A floating piston and associated seals are used in a combination oil and gas cylinder to separate the pressurized oil chamber from the compressed gas chamber. In order to maintain the piston in the cylinder while one chamber is evacuated and the other chamber remains pressurized, a piston stop and retainer assembly is required.

Abstract: Apparatus applicable to the piston rod of a control cylinder inherently operable to selectively limit and control the extent of its retraction. A preferred illustrative embodiment, as applied in use, conforms to a generally L-shaped structure the long leg of which is slim, substantially uniform in width, at least in part transversely arcuate along the length of its inner operative surface, highly resistant to compression and has its base end pivotally connected to the short leg of said structure. Springs interposed between these legs in the pivotal interconnection thereof are established in a secure and stable relation thereto in a manner to positively apply in continuing bias on the long leg which induces it to incline to and over the length of the short leg to inherently form therewith an acute angle. These legs are so formed to lend the minimal amount of material of which they are comprised a very high degree of load bearing strength for their size.

Abstract: A fuel injection pump for supplying fuel to internal combustion engines includes a pump plunger slidable within a bore in a pump body. The plunger is actuated by a rocker mechanism directly by the associated engine and in order to adjust the mechanism the plunger must be set at a known position. This is determined by a spring loaded pin contained within a housing, the pin can be depressed to engage with the side wall of a groove in the plunger to set the plunger at the predetermined position.

Abstract: A positioning device is e.g. used for positioning the door of a motor vehicle in an opened position. The positioning device comprises e.g. a cylinder and a piston rod which extends inward and outwards of the cylinder through one end thereof. A flank face is provided at the inner wall surface of the cylinder. The piston rod carries a piston. The piston is provided with a counter-arresting ring which engages the flank face in a predetermined position. When the piston passes across the arresting flank of the cylinder, the counter-arresting ring is moved radially inwards with respect to the axis of the piston rod against elastic resistence. So, an increased resistance occurs against the axial movement of the piston rod with respect to the cylinder. This increased resistance against axial movement positions the door with respect to the body frame of a motor vehicle in a predetermined opened position and avoids that the door is closed unintentionally.

Abstract: Disclosed is a fluid powered linear slide employing either a rodless or rod-type cylinder. The slide includes a base which has a movable carriage mounted thereon which moves reciprocably in response to pressurized fluid being fed to the cylinder. In the embodiment employing a rod-type cylinder, a pair of tubular rods are mounted on the base in a fixed position and attached to a piston stationarily mounted inside the cylinder which is movably mounted and attached to the carriage. In the other embodiment, the carriage is mounted on a bracket which is attached to the rodless cylinder carried in the housing for the cylinder. The base has linear guideways therein, each guideway carrying one or more stop membes which are manually adjustable and electrically actuated.

Abstract: An apparatus for setting and maintaining a predetermined projected relation of a piston rod of a gas strut or like device with reference to the cylinder unit of which it forms a part having particular application to the support of a hatchback or rear deck closure panel, trunk lid or hood of an automotive vehicle in its open condition comprises a generally L-shaped structure formed to be firm and resistant to deformation save for the longer leg thereof and a limited portion of its shorter leg being provided with a limited capability of lateral flexing. The longer leg of this structure is normally inclined inwardly to and slightly over the shorter leg thereof.

Abstract: A piston is forced in a direction to disengage from a cylinder containing a fluid such as an adhesive. The piston while in engagement with the cylinder abuts a stop in response to the disengagement force. While the disengagement force is kept on the piston, the chamber between the fluid and piston in the cylinder is evacuated. After evacuation, the disengagement force on the piston is gradually released and the piston is forced against the fluid to squeeze the fluid through fluid couplings into an array of corresponding containers releasably secured to the piston, simultaneously filling the containers without exposing the fluid to air.

Abstract: A hydraulic control apparatus, more particularly for operating a motor vehicle clutch release mechanism, comprising a master cylinder, a slave cylinder and a conduit connecting the master cylinder to the slave cylinder. The apparatus is in the form of separate modular units which are separately, but simultaneously, filled with hydraulic fluid after simultaneous evacuation of atmospheric air from the apparatus modular units and test of the integrity of the modular units, and the pre-tested and prefilled modular units are shipped unconnected to a user.

Abstract: A hydraulic control apparatus, more particularly for operating a motor vehicle clutch release mechanism, comprising a master cylinder, a slave cylinder and a conduit connecting the master cylinder to the slave cylinder. A leakproof quick-connect connector is placed between the master cylinder and the slave cylinder, preferably at the end of the conduit where it connects to the master cylinder or the slave cylinder, one member of the connector forming part of the master cylinder or slave cylinder. The apparatus, after assembly, is filled with hydraulic fluid, the two members of the connector being held momentarily engaged. After filling, the connector is broken, and the filled components are shipped to a user. After installation of the apparatus for operation of a mechanism such as a clutch release mechanism, the two connector members are reconnected, and the connector members having been provided with a one-way locking member can no longer be separated such as to preserve the integrity of the system.

Abstract: A hydraulic control apparatus, more particularly for operating a motor vehicle clutch release mechanism, comprising a master cylinder, a slave cylinder and a conduit connecting the master cylinder to the slave cylinder. The apparatus is in the form of separate modular units which are separately filled with hydraulic fluid, and the filled modular units are shipped unconnected to a user. Each modular unit is provided with a leakproof quick-connect connector member, through which filling of the modular unit may be effected, and which mates with a complementary leakproof quick-connect connector member of another modular unit, such that after installation on a utiization device, a motor vehicle for example, complementary connector members are reconnected, thus opening ports in each connector member placing each member in fluid communication with the other. Preferably, the two connector members are provided with a one-way locking arrangement preventing separation of the connector members after coupling.

Abstract: In front loaders designed for drive-in attachment to tractors, two telescopic struts are pivotable between a stowed retracted position alongside the boom assembly which carries the bucket; a first deployed extended position for supporting the rear end of the detachable main portion of the loader, aided by auxiliary struts, when it is not attached to the tractor; and a second deployed extended position, in which the struts engage with abutments on the sub-frame which carries both the boom assembly and the hydraulic cylinders for pivoting the boom assembly and are secured to said cylinders, for locking the boom assembly in its fully raised position whilst the detachable main portion is attached to the tractor.

Abstract: An hydraulically operated clutch release has an annular piston hydraulically moveable in an annular chamber. A felt ring is mounted on a shoulder of the piston away from the chamber, to engage the bore surface of the chamber, and a holding ring is snapped onto the end of the shoulder to hold the felt ring on the shoulder. An extension of the holding ring forms a seal with the bore on the chamber, and defines, with the felt ring a dust catching recess.

Abstract: A disposable rupturable shipping and installation strap holding in a retracted position the output member of a linear actuator such as a pre-filled pre-bled hydraulic actuator. The strap has a retaining member fitted over the end of the actuator output member and a pair of symmetrically disposed strips or bands integrally formed with the retaining member and attached at their other end to a portion of the actuator housing. The strips or bands have portions of reduced strength which cause the strap to break and free the actuator output member upon first operation of the actuator. Preferably, the strap is molded of relatively thin flexible plastic.

Abstract: A locking member is disclosed that is selectively operable to secure the loader boom arms in a raised position for service or repair. The locking member is pivotally connected to a boom arm for movement to an operative position between the boom arm and its respective lift cylinder where it is restrained in compression between the boom arm and lift cylinder to latch the boom arm in a raised position against collapsing movement. The locking member includes a pair of spaced apart, parallel, and aligned mounting plates, each being generally in the form of a right triangle and a generally U-shaped yoke fixed between the mounting plates and extending along opposed corresponding sides of the mounting plates for a part of their length.

Abstract: A locking mechanism for hydraulically actuated devices is disclosed herein. The mechanism includes a slotted lock shaft coaxially mounted with respect to a piston assembly, the piston assembly being disposed in a hydraulic cylinder. The lock shaft has end faces or shoulders which engage a portion of a shaft associated with the piston assembly to lock the piston assembly and the ram shaft in a predetermined position. The lock shaft has a configured surface which cooperates with a configured surface of the piston assembly for unlocking the mechanism. The locking mechanism is described for use with a ram type blowout preventer but can be used with various types of hydraulically actuated devices.

Abstract: In a lift arm structure for a bucket, for instance on a loader-type vehicle, a service support is provided to block the lift arm in the extended position during servicing and repairing either of the lift arm structure or of parts in close proximity to the lift arm structure. The service support is U-shaped in configuration so as to straddle the rod of the lift cylinder when said lift cylinder is substantially completely extended. Pads are provided on the end of the service support to contact the mounting bracket for better distribution of the loads on the service support. Attachment members are mounted on the service support and engage a plate assembly bridging the open space between the sides of the service support so that with the service support in position on an extended cylinder rod, the attachment members and plate assembly lock the service support on the cylinder rod.

Abstract: A quick-closing fire gate is provided having specific application to sectionalized production facilities using vibratory conveyors to transport volatile substances. The conveyor passes through a portal defined by a gate housing at each barrier wall. The gate door or blade initially positioned above the housing is knife-edged to sever the conveyor during its downward translation and is forced flush against the gate housing by the interaction of opposed inclined surfaces on the blade and its support structure. The inclined surfaces furthermore function to eliminate gate rebound by dissipating the kinetic energy of the falling blade and redirecting reaction forces away from the line of blade travel. The rapidity of gate operation is accomplished by a photosensitive cell detonating an explosive bolt which releases a pressurized piston connected to the gate blade.

Abstract: The roller shaft which actuates a pumping element in a fuel injection pump is secured against unintentional release during transport by elastic elements, preferably spring wire parts, whose one end engages a stationary portion of the fuel supply pump and whose other end engages a recess or cutout in the roller shaft and cooperates with a shoulder or stop therein to prevent unintentional drop-out while permitting a normal reciprocating motion after installation. Suitable openings and grooves provided in the roller shaft guide can hold and orient the spring wire.

Abstract: A circuit breaker operating apparatus comprising an operating piston connected to an operating member for operating a breaking section, holding means for mechanically maintaining the operation-complete state of the operating piston at the time of completion of its operation, spring means for giving a restitutive force to the operating member, and means for releasing an operating medium acting on the operating piston at the time of completion of its operation. The holding means includes a first lever connected to the operating piston and a second lever having an end connected to the first lever and the other end adapted to be locked by lock means. The lock means is so simple as to be arranged at an optimum position.