A coupling for coupling one or more hoses to a cleaning machine including at least one connector for the connecting of a hose to be cleaned with a pillar and at least one pillar for the connection of the connector with a cleaning machine, wherein the pillar includes a longitudinal hollow body with at least two open ends including; a longitudinal guidance part, situated towards a first end; and a second end opposite to the first end in longitudinal direction; wherein the guidance part is provided with a thickening for the fixing of the connector to the guidance part, which thickening includes a first slope facing the first end, which slope has an angle with the guidance part between 5 and 45 degrees; and includes a second slope facing the second end, which slope has an angle with the guidance part between 30 and 60 degrees.

A coupling for a nipple is disclosed. The coupling comprises a main body (100); and an opening (110), for a fluid, in the main body (100), the opening (110) being cylindrical. The coupling comprises further a holder (130) arranged in the opening (110) holding a plurality of locking elements (140) for locking the nipple to the coupling, the holder (130) and the plurality of locking elements (140) being separate; and a retaining element (150) retaining the holder (130) in the opening (110), the retaining element (150) engaging the plurality of locking elements (140). A method for assembling such a coupling is disclosed. The method comprises inserting the holder (130) with the locking means (140) into the main body (100); and retaining the holder (130) in the main body (100) with the retaining means (150).

A gas supply connector of the present invention includes a gas supply member and two fasteners, wherein the gas supply member has a main body and multiple tubes; the fastener includes a buckling portion, a pressing portion and a neck portion. The pressing portion has an inner layer body and an outer layer body. The neck portion contracts from two lateral ends toward the center to form a tapered section, and the outer surface of the neck portion is arranged with multiple reinforcing ribs. The present invention through the neck portion reduces the force required for pressing the fastener to deform by the user, and through the reinforcing ribs increases the structural strength of the neck portion to prevent the fastener from breaking; in addition, the inner layer is made of plastic, and outer layer body is made of soft material, so as to improve the comfort of pressing fastener.

A gas supply connector of the present invention includes a gas supply member and two fasteners, wherein the gas supply member has a main body and multiple tubes; the fastener includes a buckling portion, a pressing portion and a neck portion. The pressing portion has an inner layer body and an outer layer body. The neck portion contracts from two lateral ends toward the center to form a tapered section, and the outer surface of the neck portion is arranged with multiple reinforcing ribs. The present invention through the neck portion reduces the force required for pressing the fastener to deform by the user, and through the reinforcing ribs increases the structural strength of the neck portion to prevent the fastener from breaking; in addition, the inner layer is made of plastic, and outer layer body is made of soft material, so as to improve the comfort of pressing fastener.

A fluid connection assembly, including a connector body, including a first end, a second end, and a first through-bore, a retainer removably connected to the connector body, the retainer including a ring portion forming a third end, the third end operatively arranged to be secured in the first through-bore, at least one first finger extending from the ring portion, the at least one first finger including a first radially outward extending protrusion and terminating at a fourth end, and at least one second finger extending from the ring portion, the at least one second finger including a second radially outward extending protrusion, and at least one radially inward extending protrusion arranged on at least one of the at least one first finger and the at least one second finger, and a locking band arranged circumferentially around the at least one first finger and the at least one second finger.

A cover for a connector, wherein the cover is adapted to be locateable over at least a portion of the connector, and wherein the connector has a fluid pathway formed therethrough. The connector has a first portion and a second portion, and wherein, when the cover is located over the portion of the connector, ingress of impurities into the fluid pathway is prevented.

A fuel drain engagement tool and a method for draining fuel from a fuel tank are provided. In one example, a fuel drain engagement tool includes a housing. An engagement mechanism is coupled with the housing and extending upward therefrom. The engagement mechanism is configured to engage a fuel drain valve and to move between a contracted state and an expanded state. A compression applicator is coupled with the housing and is positioned to engage the engagement mechanism when the compression applicator is compressed to apply a force to the engagement mechanism that causes the engagement mechanism to move from the expanded state to the contracted state.

A movable holder includes a showerhead seat assembly; a mounting frame having a first receiving groove, the showerhead seat assembly being rotatably mounted on the mounting frame, a mating boss being provided on the mounting frame, and a locking member being mounted on the mating boss; a transmission seat movably mounted in the first receiving groove, a limiting structure being provided between the mounting frame and the transmission seat; and a damping member sleeved with the transmission seat by an interference fit and in a relatively rotatable manner and rotated synchronously with the showerhead seat assembly, an elastic member being pressed between the damping member and the showerhead seat assembly. The transmission seat is configured to drive, along with the rotation of the damping member, the locking member to move between a locked position and an unlocked position. A shower assembly includes the movable holder.

A connector for circuit elements of hydraulic or pneumatic systems, comprising: a first connecting body (10) extending along an axis (X); a second connecting body (20) extending along an axis (Y); wherein the first connecting body (10) and the second connecting body (20) can be installed on respective portions of circuit elements and are configured to provide a reversible fluid connection between the circuit elements in which the connector comprises: a first coupling member comprising a male tubular portion on the first connecting body (10) and a respective female tubular portion (23) on the second connecting body (20) to realize a fluid sealing connection by inserting the male tubular portion into a cavity of the female tubular portion (23) configured to guide the male tubular portion; a second coupling member comprising at least one protuberance (14) on an outer surface (11) of the first connecting body (10) and a respective groove (24) on the second connecting body (20) for making a mechanical reversible connection between the first connecting body (10) and the second connecting body (20) in which the protuberance (14) is configured to fit into the groove (24) and prevent an axial extraction between the first connecting body (10) and the second connecting body (20); a third coupling member comprising on the first connecting body (10) at least one flexible tab (15) having a projection (16) on the outer surface (11) and an opening on an external surface (21) of the second connecting body (20) suitable to contain the projection (16) to prevent a relative rotation between the first connecting body (10) and the second connecting body (20) around the respective development axes (X, Y).

A water separator with a shower seat includes a valve body, a frictional unit, a shower seat, and a water outflow switching mechanism. The valve body is provided with a plurality of snap-fit joints disposed circumferentially. The frictional unit is mounted on the valve body and an outer wall thereof is provided with a first frictional surface. The shower seat is provided with a connecting chamber having an open end, and a snap-fit surface and a second frictional surface are circumferentially disposed in the connecting chamber, respectively. The water outflow switching mechanism is mounted in the valve body. Hook heads of the snap-fit joints are snapped to the snap-fit surface to prevent the shower seat from getting separated from the valve body. When the shower seat rotates with respect to the valve body, the first frictional surface and the second frictional surface rotate accordingly and interact with each other.