Abstract: A quick coupling, for example of a female type, to be connected with a counterpart, of a male type, comprises, inside a valve body, downstream of an inlet fitting for receiving a pressurized fluid flow (F), a guide and conveying body (7) having a parabolic cross section, and a plurality of radially outwardly extending ribs, delimiting, circumferentially of the guide and conveying body, a plurality of flow channels communicating with an annular chamber (6) closed by a valve body (3).

Abstract: A quick coupling comprises a male element (2) which can be threadably assembled to a female element (3), housing an inner tubular supporting body (8) in turn housing a bearing (11) thereon the female element (3) bears, the female element (3) including a plurality of radially extending holes (20) in which are engaged ball elements (21) which can be fitted in a circumferential slot formed in the male body (2) and being adapted to be radially locked by an enlarged portion (16) formed on an inner side of a ring nut which can be driven against an urging spring (17) pertaining to the female element.

Abstract: A tolerance compensated quick coupling comprises a projecting or bulging portion of a male coupling, which can be axially driven in a valve body, the coupling projecting or bulging portion ending with a flange inside the valve body, said flange in said valve body being followed by an axially movable annular body which, through a spring bearing on the bottom of the valve body, is pressed against the flange, the movable annular body having, on a side thereof facing the flange, a circumferential slot housing a sealing ring element contacting an inner surface of the flange, the movable annular body being moreover provided, on an outer circumferential side thereof, with a slot in which is engaged a circumferential sealing ring contacting an inner wall of the valve body.

Abstract: A working device, with coupling means for operatively coupling it to a vehicle, which means form a quick coupling, comprises, on a rear side of a bucket (1), a supporting plate (8) supporting a first portion of the constructional elements forming the quick coupling, whereas a respective end portion of the vehicle arms has a further supporting plate (14), which is driven by a cylinder-piston unit (21), and supports a further portion of the quick coupling forming constructional elements.

Abstract: A quick coupling comprises a male element (2) which can be threadably assembled to a female element (3), housing an inner tubular supporting body (8) in turn housing a bearing (11) thereon the female element (3) bears, the female element (3) including a plurality of radially extending holes (20) in which are engaged ball elements (21) which can be fitted in a circumferential slot formed in the male body (2) and being adapted to be radially locked by an enlarged portion (16) formed on an inner side of a ring nut which can be driven against an urging spring (17) pertaining to the female element.

Abstract: A quick coupling, for example of a female type, to be connected with a counterpart, of a male type, comprises, inside a valve body, downstream of an inlet fitting for receiving a pressurized fluid flow (F), a guide and conveying body (7) having a parabolic cross section, and a plurality of radially outwardly extending ribs, delimiting, circumferentially of the guide and conveying body, a plurality of flow channels communicating with an annular chamber (6) closed by a valve body (3).

Abstract: A tolerance compensated quick coupling comprises a projecting or bulging portion of a male coupling, which can be axially driven in a valve body, the coupling projecting or bulging portion ending with a flange inside the valve body, said flange in said valve body being followed by an axially movable annular body which, through a spring bearing on the bottom of the valve body, is pressed against the flange, the movable annular body having, on a side thereof facing the flange, a circumferential slot housing a sealing ring element contacting an inner surface of the flange, the movable annular body being moreover provided, on an outer circumferential side thereof, with a slot in which is engaged a circumferential sealing ring contacting an inner wall of the valve body.

Abstract: A safety device for threadedly engaged portions of a quick-coupling comprises a first quick-coupling portion, including a thread, and a circumferential slot, and a second quick-coupling portion, having a respective thread and assembled with the thread of the first portion, said second quick-coupling portion having a circumferential region which, at a free end thereof and at said circumferential slot, comprises a hammer enlarged portion which can be coupled with the circumferential slot after having fully assembled the quick-coupling portions.

Abstract: Is herein disclosed a quick-coupling connection device for robotized apparatus of a fire fighting system arranged in a tunnel therethrough a pressurized water pipe passes. The pipe comprises spaced male-portions of quick-connections for coupling with corresponding spaced female portions of said quick-connections. The male part connections comprise in their inside a shut-off disc-like body operating as a valve, arranged in a suitable seat thereof and adapted to be driven by a driving stem urged in a shut-off direction by a spring means bearing against a valve-guide disc arranged at a fixed position and having a plurality of through openings. The male part quick-connection comprises outer slots therein are engaged corresponding pins arranged inside the female part quick-coupling body.

Abstract: An annular gasket is stationarily mounted on one coupler, and a tubular body is mounted for axial sliding movement within another coupler. The body has an outer wall formed with a sealing surface that sealingly engages the gasket in a sealed position, and with an outer channel that is spaced from the gasket in a bleed position in which pressurized fluid within the couplers is released to a bleed fitting.

Abstract: A flat-surface quick coupling for coupling tubes extending between a pressurized fluid user device and fluid feeding means comprises a quick coupling (2) female part (1) and a quick coupling (2) male part (12), to which are coupled concentric tubes for providing a delivery duct and a return duct for a hydraulic fluid, the ducts delimited by the concentric tubes being operatively coupled to a delivery duct, respectively a return duct, made inside the quick coupling parts (1) and (12), said ducts, upon assembling the female part (1) and male part (12) being mutually operatively connected.

Abstract: Quick-action coupling of a flat design, comprising a sleeve-shaped component and a cylinder-shaped component, it being provided that a tube-shaped component, which is provided radially outside the sleeve-shaped component, is connected to the front side of a pipe connecting piece and the opposite end of the pipe connecting piece is connected to an end socket, which is connected to a collector for the hydraulic fluid and, in a chamber which is bounded by the tube-shaped component, there is provided an axially displaceable valve body, which is connected to a pipe body which extends in the longitudinal direction and ends in a tube-shaped component which has at its end openings which are arranged in the circumferential direction and receive arresting balls known per se.

Abstract: A quick coupling with a connecting, respectively a releasing, capability in the presence of a pressurized hydraulic fluid comprises a tubular body slidably supported in a tubular element and having a sealing circumferential and continuous surface cooperating with an annular gasket, near the sealing surface of the slidable body at least a hydraulic fluid outlet channel coupled with a bleeding fitting being provided.

Abstract: Quick-connection coupling with flat connection and arrangements for avoiding the hydraulic fluid escaping during a joining or separating operation Quick-connection coupling with a flat connection and arrangements for avoiding the hydraulic fluid escaping during a joining or separating operation, it being provided that the receiving component has an inner, displaceable sleeve which comprises two components which are arranged concentrically with one another and can be displaced in relation to one another, it being the case that the displaceable component, designed in two parts, comprises a first tubular component, of which the front part has a guide and sliding surface for a sealing ring which is arranged in the interior of the projecting component which is to be connected, and the guide and sliding surface terminates at a stop step on which a spring means acts, it being the case that the first tubular component is accommodated in a displaceable manner by the front part of a second tubular component, which has

Abstract: A radially offset valve is mounted in a bypass passage that extends through two movable members that are jointly moved during coupling between two couplers. The valve is moved from a closed position in which the flow of a pressurized fluid through a flow channel of an outer tubular body is prevented from being discharged through a discharge passage, to an open position in which the fluid is permitted to flow to the discharge passage, thereby resisting fluid leakage to the environment during coupling.

Abstract: Quick-action coupling of a flat design, comprising a sleeve-shaped component and a cylinder-shaped component, it being provided that a tube-shaped component, which is provided radially outside the sleeve-shaped component, is connected to the front side of a pipe connecting piece and the opposite end of the pipe connecting piece is connected to an end socket, which is connected to a collector for the hydraulic fluid and, in a chamber which is bounded by the tube-shaped component, there is provided an axially displaceable valve body, which is connected to a pipe body which extends in the longitudinal direction and ends in a tube-shaped component which has at its end openings which are arranged in the circumferential direction and receive arresting balls known per se.

Abstract: Quick-connection coupling with flat connection and arrangements for avoiding the hydraulic fluid escaping during a joining or separating operation Quick-connection coupling with a flat connection and arrangements for avoiding the hydraulic fluid escaping during a joining or separating operation, it being provided that the receiving component has an inner, displaceable sleeve which comprises two components which are arranged concentrically with one another and can be displaced in relation to one another, it being the case that the displaceable component, designed in two parts, comprises a first tubular component, of which the front part has a guide and sliding surface for a sealing ring which is arranged in the interior of the projecting component which is to be connected, and the guide and sliding surface terminates at a stop step on which a spring means acts, it being the case that the first tubular component is accommodated in a displaceable manner by the front part of a second tubular component, which has

Abstract: A pallet for clamping a workpiece to be processed, in particular by machining operations, wherein the pallet is connected to a holding fixture which accommodates a quick-acting connection which is provided with conduits for the feed of a hydraulic fluid to a piston/cylinder unit and with a quick-acting connection in combination with conduits for the return of the hydraulic fluid, in which case these first connections can be connected to second quick-acting connections which are connected to a conduit for the feed of the hydraulic fluid and to a conduit for the return of the hydraulic fluid to a hydraulic supply unit, and the second quick-acting connections are arranged in a holding body which has an actuating lever for a connecting device, and the actuating lever has an eccentric slot, which can be connected to a guide pin which is fastened to the holding body for the first quick-acting connections.

Abstract: A flat-face quick coupling (1), comprising an outer tubular body (5) and a bushing (6) threaded in the tubular body for receiving, in an axially displaceable manner, a tubular element (8) coupled, in a per se known way, to means (11) for providing a flat-face quick coupling, by providing that the tubular element (8) is rigid with a tubular body (7) which, on an outer circumference thereof, comprises sealing ring elements (12, 13), that through a body of tubular element (8) a throughgoing hole (22) is formed, which, through a cross hole (20) communicates with a chamber (3) of the quick coupling (1), that the throughgoing hole (22) has a valve seat (23) which can be shut-off by a valve stem (24) preloaded by a spring (25), that the valve stem (24) comprises an extension (26) projecting into a chamber (28) formed between the tubular body (7) and tubular body (5), and that from the chamber (28) extends a throughgoing hole (30) connected to a discharging fitting (31).