Abstract: The present invention provides the illusion that an elastic apparatus is hooked from within a base unit, wherein actually hooking the elastic apparatus is virtually impossible. An opposite end of a rod is inserted at least partway into a hole of a base unit using the handle end of the rod. The base unit gives the appearance that the elastic device is attached to and extending within the hole thereof. The inserted opposite end of the rod is then pulled partially out of the base unit. But before the opposite end of the rod is exposed in viewable sight, two of a user's fingers are pressed together on substantially opposing sides of the handle end in order to forcibly snap the rod back into the base unit giving the illusion that the rod slipped from the user's fingers due to an opposing force from the elastic apparatus.

Abstract: A lip seal has an internal spring element disposed in an elastomeric ring.

Abstract: An outer ring of a clamp-type joint for vacuum apparatus is disclosed. The joint comprises a base forming an outer circumferential side and a pair of brims respectively extending from the top and bottom of the base toward the center axis of the joint, the inner side of the brims on which the brims come into contact with the O-ring being in the form of a convex sector, of which the arc faces the O-ring. The radius r of the circle forming the sector is 0.6-2.5 mm and the thickness (t0) satisfies the following formula: t1?0.2?t0?t1+0.4, wherein t1 is a thickness (mm) of the center ring at the point at which the center ring engages with the O-ring. A clamp-type joint for vacuum apparatus which can exhibit stable sealing performance at a high temperature of 250° C. or more without cracking of the O-ring, as well as an outer ring and O-ring used with the clamp-type joint are provided.

Abstract: An O-ring 3 used in a clamp-type joint 10 for vacuum apparatus, which engages with a concave groove 21 in the outer circumference edge of the center ring 2 and is sandwiched by an outer ring 5 having a U-shaped outer circumference, characterized in that the diameter of the circular arc in the cross-section on the side coming into contact with the outer ring 5 is smaller than the diameter of the circular arc in the cross-section on the axial side of the joint. A clamp-type joint for vacuum apparatus which can exhibit stable sealing performance at a high temperature of 200° C. or more without cracking of the O-ring, as well as an outer ring and O-ring used with the clamp-type joint are provided.

Abstract: An intake gasket to be inserted between a cylinder head and a manifold, comprising an intermediate rib member 1 with a three-layer structure formed from a thin metal plate 11 and rubber layers 12 and 12 provided on both sides of the thin metal plate, metal plates 2 and 2 disposed on both sides of the intermediate rib member 1, and elastic metal substrates 3 and 3 disposed on both sides of the metal plates 2 and 2, the intermediate rib member 1 comprising a first rib 15 formed around the periphery thereof and a second rib 14 formed around the periphery of a fluid passage hole, wherein a space is formed from the rib of the intermediate rib member 1 and the metal plates 2 and 2 disposed on both sides of the intermediate rib member 1. The intake gasket can shut out heat from the cylinder head so as to make transmission of heat to the manifold difficult.

Abstract: A water treatment apparatus has a two components with surfaces that face each other wherein one surface has an annular groove therein. A sealing ring is provided for placement in the annular groove to form a water tight seal between the two components. The sealing ring has an annular body with an inner perimeter and an outer perimeter. One or more fins project away from either the inner perimeter or the outer perimeter for engaging a wall of the annular groove and spacing the respective inner perimeter or outer perimeter away from the wall. During assembly of the water treatment apparatus, the fins and not the entire inner perimeter or an outer perimeter engage the groove wall thereby enabling the sealing ring to be easily pressed into the groove which facilitates the assembly.

Abstract: The invention pertains to a chuck for detachable connection of two machine parts, with a chuck assembly arranged on or in a first machine part and a cooperating complementary part on or in a second machine part. The chuck assembly contains an axially displaceable tensioning element and several gripper elements associated with the tensioning element and radially movable by axial displacement of the latter, with a clamping surface for contact with a corresponding opposing surface of the complementary part. In order to allow a subsequent alignment or adjustment of the chucked machine part, the complementary part contains an outer part, an intermediate part arranged in the outer part, and an inner part arranged in the intermediate part, which are connected to one another by flexible outer and inner webs and are otherwise separated by outer and inner gaps. The intermediate and inner parts are adjustable in different directions relative to the outer part.

Abstract: A releasable locking member, having a handle, a spindle, and a shank connected at a first end to the handle. The shank has an opening extending through along a longitudinal axis thereof. A shaft extends through an opening of the shank. The shaft has a first portion, a second portion, and a central portion extending between the first and second portions. An actuator member is connected to the first portion of the shaft. A spindle is connected to the second portion of the shaft. A biasing member is positioned between the actuator member and a wall of the handle.

Abstract: The present invention is directed towards a portable, insulated container with lid; particularly towards a portable insulated container with lid and attached tray for movement between a stowed and elevated position above the surface of the container lid capable of supporting various items thereon while simultaneously allowing the user to lift the lid of the container to access the interior; more particularly to a portable cooler with an attached retractable tray constructed and arranged to be readily positioned by a single user at various elevations above the surface of the lid.

Abstract: A first and second stroller portions are described to form a modular stroller. The first and second stroller portions may be reversibly coupled together in a tandem relationship with a means for coupling to operate in a double stroller configuration. Alternatively, the first and second stroller portions maybe uncoupled from one another and used in an independent mode of operation.

Abstract: A swivel adaptation to wheelbarrows is presented for patent that allows the tray assembly to adjust to rolling terrain—independent of ground levelness. The swivel is combined with a limiting feature that prevents the tray from overturning under conditions of load shifting. This invention is of particular value when incorporated into wide wheel-based configurations such as those using multiple wheels.

Abstract: Disclosed is a beauty cart, which includes a wheeled cart body having racks at different elevations for holding devices and accessories for hairdressing, and a facial vaporizer installed in a vertical hollow holder frame of the wheeled cart body for producing steam for treating the skin of a person's face, which facial vaporizer having a nozzle pivoted to the top side of the vertical hollow holder frame of the wheeled cart body, an electric heater installed in the vertical hollow holder frame and connected to the nozzle for heating water in a water container put inside the vertical hollow holder frame into steam and guiding produced steam out of the nozzle.

Abstract: A mobile flat panel monitor and computer cart. The cart has a wheeled base, a support structure coupled to and extending above the base, a shelf coupled to the support structure above the base for supporting a computer, and a bracket coupled to the support structure above the shelf and that is adapted to have mounted to it a flat-panel monitor.

Abstract: A skateboard having a front board, a rear board, a connecting element which interconnects the front board and the rear board in a spaced relationship, at least one direction-caster mounted on the underside of each of the front board and the rear board; and the connecting element comprises an elastic member so that the connecting element can be elastically twisted by application of at least one of a twisting or bending force and restores to its original shape when the force is removed.

Abstract: A method of propelling a wheeled platform, which includes creating a source of energy upon a first change in orientation of the platform around an axis approximately parallel to a longitudinal axis of the platform and wherein the platform rotates around the axis. The source of energy is stored and released to propel the wheeled platform upon a second change in orientation of the platform around the axis.

Abstract: The invention discloses a utility vehicle, in particular an agricultural tractor, with a steering system having single-wheel-suspended steering wheels, which are mounted on a respective wheel carrier (11). Each wheel carrier (11) may be swivelled about the axis of at least one rigidly connected bolt (18) and is connected via a ball-and-socket joint (9) on the at least one bolt, to a transverse steering element (1) that is articulated to the vehicle body. Associated with the ball-and-socket joint (9) is a steering angle sensor (22) comprising a rotatable input member (23), which is located at least approximately in the extension of the axis of the swivel bolt (18). The rotatable input member (23) is connected to the bolt via an entrainment element (25) that transmits the swivel motion of the bolt in an angularly precise manner to detect the current swivel position of the wheel carrier (11).

Abstract: A suspension apparatus for a vehicle includes a stabilizer bar, a hydraulic cylinder, a lever, and a link. The stabilizer bar has a torsion bar portion assembled to an axle. One arm portion of the stabilizer bar is assembled to the frame via the hydraulic cylinder and the lever. The hydraulic cylinder is assembled to the frame at a first connection point on the cylinder body. The lever is connected at a second connection point to the arm portion, is connected at a third connection point to the link, and connected at a fourth connection point to the piston rod. The link is connected at a fifth connection point to the cylinder body. The intersection between a straight line passing through the first and second connection points and a straight line passing through the third and fifth connection points is located near the axis of the piston rod.

Abstract: A swing arm with impact dampener, includes a swing arm having a pivoting coupling end and a non-pivoting coupling end. An impact dampening assembly is positioned at the non-pivoting coupling end.

Abstract: Leg assembly (10) for an amphibious vehicle comprises leg (11) and hydraulic ram (33) each pivotally mounted, above the waterline, externally to hull (17). The line of action of ram (33) is such that it is optimal (eg less than 30 DEG) with respect to the tangent to the arc of travel of leg (11) when it is lowered or raised. Leg (11) carries wheel (13) which may be swivelled for steering using hydraulic linear actuator (15). Assembly (10) is compact, light, yet capable of lifting the vehicle off the ground.

Abstract: The invention relates to an independent wheel suspension for the rear wheels of motor vehicles, having a wheel support which is hinge-connected to at least one upper and one lower control arm, the lower control arm being connected by way of two more or less horizontal arm bearings forming pivot axes on the body of the motor vehicle and on the wheel support and a guide arm of the wheel support to another bearing, and also having a bearing spring resting on the wheel support and a more or less vertically oriented telescopic shock absorber.

Abstract: A movable subframe for a tractor-trailer includes a pair of elongated spaced-apart main members extending longitudinally relative to the tractor-trailer, at least one cross member extending between and being attached to the main members, and a retractable pin mechanism for selectively securing the position of the subframe relative to a body of the tractor-trailer. At least one of the main members includes at least one opening for receiving a pin of the retractable pin mechanism. The main member opening is formed in a shape, such as a D-shape, which reduces or minimizes distortion of the main member adjacent the top of the opening that is associated with forming of the main member.

Abstract: A mobile wheeled device driven by a user's striding his feet on a pair of footbeds through an elliptical path while applying reciprocal force to a pair of upright arm members. The device may utilize an internal gear system in the rear hub.

Abstract: This invention provides a stabilizing system and method for two-wheeled vehicles (typically small, human-powered bicycles) that affords the rider no restriction on the full range of movements (banks, leans, etc.) common to bicycles, but that provides greater stability during turns and other maneuvers so that an unintentional bank or tilt (potentially causing a fall) is less likely, even at relatively slow speeds and startup. A rotating mass of predetermined mass-value and radial mass-distribution is provided coaxially with the front axle. The mass is supported on bearings so as to freewheel with respect to the rotation of the front wheel. As such it can be induced to spin significantly faster than the front wheel thereby generating a gyroscopic effect at the front wheel about the axle. This gyroscopic effect influences the steering of the wheel by the rider. Due to precession, the wheel tends to follow any excessive bank by the bicycle, ensuring that the rider can “steer-out-of” an unintended tilt or bank.

Abstract: A system and method for mounting a shock absorber to a bicycle frame. The system preferably includes at least one spacer having a first spacer member and a second spacer member. Each of the first and second spacer members include a curved contact surface configured to contact the respective surface of the other spacer member. A first one of the spacer members is located relative to the bicycle frame and the second one of the space members is located relative to the shock absorber. The shock absorber and the second one of the spacer members may be rotated relative to the first spacer member and the bicycle frame to achieve a desired alignment between the shock absorber and the bicycle frame to compensate for misalignment between the mounting structures on the bicycle frame for a respective first and second ends of the shock absorber.

Abstract: A towbar for flat-towing a vehicle, including two telescoping arms each pivotally attached at a pivot end having a heavy-gauge eyelet for attaching to a pintle hitch on the rear of a towing vehicle, with each arm having a gear element at the pivot end, in gear engagement with the gear element of the other arm. The telescoping arms automatically lock at a predetermined length.

Abstract: A board is provided particularly for supporting a front of a snow vehicle. The board is provided alone as a single board for a forward portion of the snow vehicle with the board capable of floating upon soft snow. The board includes a mounting bracket on an upper surface for mounting to a chassis of the snow vehicle. The running surface opposite the upper surface floats the board upon the snow or other support surface and preferably includes a central fin and a pair of skegs extending down from the running surface. Side edges of the board can engage the snow to allow turns to be carved by the snow vehicle. The central fin can be adjusted in position and depth and has various different configurations to provide optimal steering control of the snow vehicle through the board.

Abstract: In one embodiment, a snowboard is provided. The snowboard includes a first snowboard portion having an outer riding edge. The snowboard also includes a second snowboard portion having an outer riding edge. The snowboard further includes a central edge piece attached to the first snowboard portion and the second snowboard portion. The first snowboard portion, second snowboard portion and the central edge piece form a profile with a V-shape. In another embodiment, a snowboard is provided. The snowboard includes a board having a curved front end and a curved back end. The snowboard also includes a central edge piece attached to the board. The board and the central edge piece form a profile with a V-shape.

Abstract: Device for sliding on snow, especially a carving ski, having a base running face, which extends over a front, a central and a rear zone and which is waisted in the longitudinal direction, wherein in the front and/or in the rear zone of the base running face, the latter is overlaid by at least one additional running-face segment which, together with a portion, especially the central portion, of the base running face defines a second running face having a second waist with a substantially larger radius of curvature.

Abstract: A mounting arrangement for mounting a toddler seat to a pram or stroller having a framework is disclosed. The mounting arrangement includes a first support element that is pivotably attached to the framework and a second support element connected to the first support element. Also included is a mounting portion to attach the toddler seat. The second support element in a first deployed configuration is attachable to the framework to configure the mounting arrangement for the seating of a toddler and the second support element is further releasable from the framework to allow the mounting arrangement to fold or collapse to a compact folded configuration.

Abstract: A body receptacle for a wheeled frame allows for the transport of babies in a bicycle trailer. The body receptacle has a flexible mat that is brought into the intended transport form with the help of tensioning devices.

Abstract: Disclosed is a portable and adjustable trailer assembly that allows for easy assembling and de-assembling, foldability, portability, requiring small storage space, multi-functional utility, retrofittable to various vehicles, and at the same time light weight and cost effective. It comprises a frame assembly having a frame portion with front and rear ends, pivotally and hingedly coupled at its rear end to a first end of a platform portion, a second end of the platform portion coupled to a rear beam, the portions being releaseably locked with each other and folds out to configure a lateral plane when in operation, a wheel assembly mechanically coupled to the platform portion at its underneath; and a detachable and lockable draw bar assembly having first and second ends, mechanically coupled to the frame assembly at the first end and having means to connect to a tow vehicle at the second end.

Abstract: A vertically stowable modular multi-purpose trailer is provided. The trailer includes a forward support section including a first tubular frame having a main body portion with a first upper platform and rear interface side, and forward trailer neck; a pair of caster wheels attached proximate said rear interface; and a first planar deck substantially covering the first upper platform. The trailer further includes a rear support section including a second tubular frame having a second upper platform and a forward interface; and a second planar deck substantially covering the second upper platform. A pair of hinge assemblies interconnecting rear interface and said forward interface. The trailer is adapted to be configured in a deployed configuration, wherein the forward support section and rear support section are longitudinally positioned next to each other forming a generally horizontally oriented common planar platform for supporting a payload.

Abstract: A head-protecting airbag and a head-protecting airbag device that exhibit a gentle change in internal pressure of chambers and facilitate the adjustment of the internal pressure of a primary chamber. In the event of a side impact or rollover of a vehicle, a gas generator is activated to supply gas into a primary chamber, which is thus inflated. The airbag expands downward like a curtain and inflates between vehicle occupants and an in-vehicle lateral surface. If the cushion cells, upon receiving the head of an occupant, exhibit an internal pressure higher than a predetermined value, gas flows into a secondary chamber through the air-permeable panel.

Abstract: An inflatable curtain (2) having an upper attachment edge (6) provided with mounting elements (14) for mounting the inflatable curtain in a vehicle cabin for deployment beside an interior surface (38) of the vehicle cabin. A gas-flow passage (28) extends along the attachment edge, and communicates with cells (32) defined by seams (30) in an inflatable region (4) which has a lower edge (8). Mounting elements (14) are located between the seams (30) of a respective cell (32). The inflatable curtain is formed from an inboard layer of fabric and an outboard layer of fabric, and is rolled from the region of the lower edge (8) with the roll being adjacent the outboard layer and with part of the inboard layer forming the exterior of the roll.

Abstract: A seat belt system, in one form, includes a buckle anchored along the side of the seat, a tongue slidably mounted on the seat belt for being latched in the buckle to define the shoulder and lap belt portions, and a retractor for pay in and pay out of the seat belt into and out from the retractor. The airbag is fixed to the tongue and configured for sliding along the seat belt so that with the tongue latched in the buckle the airbag extends along the same position irrespective of the size of the occupant. Alternatively, the airbag is fixed to a guide loop adjacent to the shoulder of the occupant and configured to allow for sliding of the seat belt relative thereto so that with the tongue latched in the buckle the airbag extends from the same position and across the occupant's torso irrespective of the size of the occupant.

Abstract: A satellite module mounted near the periphery of a vehicle inboard of a body panel such as a bumper or side door panel includes both primary and secondary (safing) sensors. Response time is enhanced by co-locating the sensors in a satellite module, and reliability is enhanced by utilizing different sensing technologies for the co-located sensors. In a preferred embodiment, either the primary or secondary sensor is responsive to airflow inboard of the body panel due to a crash event.

Abstract: The present invention described hereafter provides a single stage inflator with a disk shaped inflator housing with one initiator having a single initiating squib located in an initiator housing, the initiator housing being offset relative to the centerline of the disk shaped inflator housing.

Abstract: A baffle system (30) for use in a gas generating system (10). The baffle system (30) includes a plurality of adjacent plates (82a, 82b, 86), each plate of the plurality of adjacent plates having at least one through orifice formed therein. Each orifice in any given plate of the plurality of adjacent plates (82a, 82b, 86) is in fluid communication with at least one orifice in each plate adjacent the given plate so as to provide at least one gas flow path extending through the plurality of adjacent plates. A gas generating system (10) incorporating the baffle system (30), and a vehicle occupant protection system (180) incorporating the gas generating system (10), are also described.

Abstract: The present invention relates to a gas generator for an air bag, comprising, in a housing having a gas discharge port, a combustion chamber, and the combustion chamber accommodating a gas generating agent that generates gas by combustion and an ignition device for igniting and combusting the gas generating agent, the ignition device being formed by integrating an electric igniter and a substantially cylindrical igniter collar with a resin in a state where the electric igniter is disposed inside the igniter collar, the ignition device being in contact with the bottom surface of the housing in at least part of the surface of the igniter collar and being attached on the housing bottom surface by at least one from the following attachment structures (1) to (3): (1) The igniter collar is fixed by a support member having a flat section and a tubular section extending upward from the flat section, the flat section is fixed to the housing bottom surface, and the upper end surface of the igniter collar is pressed and

Abstract: A gas generator has a housing extending along an axis and having a front end and a rear end, a propellant charge in the front end of the housing, and an electrically firable igniter in the housing adjacent the charge. An end fitting fitted to the rear end of the housing is formed as a plug. Electrical contacts exposed at the end fitting and extending therethrough are connected to the igniter.

Abstract: An occupant restraining device (S1) is provided with: a shielding member (41) to be let off from the peripheral edge (DW/VW) of a vehicle window (WF) arranged in a door of a vehicle, so as to shield the window; and a let-off means (81, 86, 87) for letting off the housed shielding member (41) so as to shield the window (WF). The shielding member (41) and the let-off means (81, 86, 87) are arranged in the door (FD). A garnish (21) is arranged on the peripheral edge of the door (FD) for covering the housed shielding member (41) so that the shielding member (41) is let off. An airbag device (ABM) can be arranged in the vehicle without any problem even if the occupant restraining device (S1) is mounted together with the airbag device (ABM) on the vehicle.

Abstract: A safely assistant wheel structure of a power-driven wheelchair having a body under which a front wheel and a rear wheel are provided, in which a front end of the front wheel is provided with an assistant wheel of which an axle center is provided for a holder to stretch through above which a fixed link is provided stretching from the body, and a shock absorber spring is provided between the holder and the fixed link, when the forward moving power-driven wheelchair is suddenly braked, an inertial, a forward leaning force of the body is eliminated by the assistant wheel and detracted by the spring for the stability of wheelchair body and the safe ride of a rider.

Abstract: The disclosed seat belt retractor and seat belt device improve the reliability of a belt withdrawn amount sensing unit for detecting the withdrawn amount of a belt with a high accuracy. The seat belt retract may comprise a spool for withdrawably retracting a seat belt and a rotation angle detecting unit for detecting a rotation angle of the spool. The rotation angle detecting unit can be a belt withdrawn amount sensing unit for detecting a predetermined rotation angle of the spool in a belt withdrawn direction. The belt withdrawn amount sensing unit can comprise a Hall switch which includes a magnet for moving according to a predetermined rotation amount of the spool in the seat belt withdrawn direction of the spool and a Hall element which is controlled to be turned on or off by the magnet.

Abstract: A cover assembly for a seat belt guide loop is disclosed having a first, outer cover portion connected by an elongate, thin connector member such as a tether with a second, inner cover portion. The outer cover portion is mounted to the vehicle via a bolt that pivotally mounts and anchors the guide loop. The head of the bolt is left exposed for a torque test or the like; and, then the tethered inner cover is assembled to the outer cover by a snap fit of one to the other. In one form, the tether may be integrally attached to one of the cover members and manually connected by an enlarged free end to the other cover member to tether the cover members together. The tether is hidden from view within the assembly cover portions after cover assembly. In another form, the tether may be a discrete part that is later connected to each of the respective cover portions.

Abstract: A device for repairing automobile, and other vehicle, exhaust pipes that have been broken. The device comprises three major components, four sections of angle steel, four U-bolts, and two thread bolts. The angle steel sections form a trough and a cap. In use, the broken exhaust pipe lies inside the trough formed by the first two sections of angle steel and snugly nestles into the angle. The U-Bolts hold the angle steel in place and each angle steel section can move along the thread bolts. The U-Bolt is tightened where the break in the exhaust pipe exists. The U-Bolt may also be loosened to allow the two exhaust pipe pieces to be pulled apart. The device allows for a clean repair of an exhaust pipe without the need for tape, hangers, welding, or other temporary and/or inefficient measures.

Abstract: A pipe connecting structure has a connector block fixed to a header tank of a heat exchanger and formed with a through-hole and a large diameter hole, a header side pipe having a base end portion connected with the header tank and a diameter expansion portion formed at its top portion and inserted into the large diameter hole of the connector block, and a vehicle side pipe having an end portion connected with a vehicle side device and a top portion inserted into the diameter expansion portion of the header side pipe through the through hole. The diameter expansion portion of the header pipe is brazed to the connector block, and the top portion of the vehicle side pipe is fixed to the connector block with a seal member between the connector block and the top portion of the vehicle side pipe.

Abstract: A disposable sanitary gauge tee with no dead zone for use in pressure measurement of fluid in disposable tubing including a body having a main fluid passageway in fluid connection with a proximal end of a pressure fluid passageway, the main fluid passageway including a fluid port and a second fluid port, wherein a hose barb is operatively attached to the body at the fluid port and the second fluid port, wherein the disposable tubing can be removably attached to the hose barbs, and the pressure fluid passageway including a distal end for removable attachment of a sanitary pressure gauge and a biocompatible gauge protector for isolation of the fluid from the sanitary pressure gauge. No dead zone is achieved within the gauge tee as the proximal end of the pressure fluid passageway is substantially the same diameter as the distal end of the pressure fluid passageway, therein providing a total transfer of fluid within the pressure fluid passageway during fluid flow.

Abstract: A sanitary hose coupler attachable in a fluid pressure-tight, void-free connection to a resiliently deformable hose for conveying liquid food or drug products under pressure, which is releasably coupleable in a fluid pressure-tight connection to a compatible coupler, comprises an elongated tubular connector body having a rearwardly protruding frusto-conically tapered nose piece forcibly insertable into the bore of a hose, a hollow cylindrical compression member which has through its length a central frusto-conically shaped bore and a clamping member for exerting a compression force couple on the compression member and connector body, thereby pressing the tapered inner wall surface of the compression member into a fluid pressure-tight seal with the outer surface of an end portion of the hose which is expanded by insertion of the nose piece into the hose bore.

Abstract: A connection assembly has a male connector, a first engaging ring securely mounted on the male connector, a female connector and a second engaging ring securely received in the female connector. The first engaging ring has first claws formed to abut a periphery defining the second annular groove formed on the female connector and the second engaging ring has second claws formed to abut a periphery defining the first annular groove formed on the male connector. Engagement between the male connector and the female connector is accomplished after the abutment between the first claws and the second annular groove and between the second claws and the first annular groove is finished.

Abstract: A coupling assembly is provided herein which generally includes a female coupler selectively interconnected to a male coupler to provide sealing engagement. In one embodiment, the female coupler and the male coupler are secured together by a pressure activated locking assembly which prevents disengagement of the male and female coupling until the internal pressure in the coupling is reduced to a predetermined level.