A system is provided that includes a support structure and a nozzle. The support structure includes a cavity surface and an aperture. The cavity surface at least partially forms a boundary of a cavity. The aperture extends partially into the support structure from the cavity surface. The nozzle includes a mount, a neck and a head. The mount is seated within the aperture. The neck is connected to the mount and extends axially along a centerline away from the surface to the head. The head is configured to inject fluid out of the nozzle and into the cavity.

A system is provided that includes a support structure and a nozzle. The support structure includes a cavity surface and an aperture. The cavity surface at least partially forms a boundary of a cavity. The aperture extends partially into the support structure from the cavity surface. The nozzle includes a mount, a neck and a head. The mount is seated within the aperture. The neck is connected to the mount and extends axially along a centerline away from the surface to the head. The head is configured to inject fluid out of the nozzle and into the cavity.

A coupling for pressure lines, having a housing (10) which has a continuous conveying duct (12) for a pressurised medium and can be connected by one end to a pressure source and attached by the opposite end to a connection nipple (30), and having retaining jaws (136) which are arranged around the mouth of the conveying duct opening into the connection nipple (30) and which can be fixed by a locking mechanism in a position in which they engage around the connection nipple (30), in which the retaining jaws (36) are each supported on a pivot bearing (38) and have, at the end remote from the connection nipple (30), beyond pivot bearing (38), an actuating arm (42) which can be actuated, in order to close the retaining jaws (36), by a piston (44) subjected to the pressure of the medium.

A coupling for pressure lines, having a housing (10) which has a continuous conveying duct (12) for a pressurised medium and can be connected by one end to a pressure source and attached by the opposite end to a connection nipple (30), and having retaining jaws (136) which are arranged around the mouth of the conveying duct opening into the connection nipple (30) and which can be fixed by a locking mechanism in a position in which they engage around the connection nipple (30), in which the retaining jaws (36) are each supported on a pivot bearing (38) and have, at the end remote from the connection nipple (30), beyond pivot bearing (38), an actuating arm (42) which can be actuated, in order to close the retaining jaws (36), by a piston (44) subjected to the pressure of the medium.

A lubricant delivery system and method includes a valve manifold, an electronic controller, and a pressure sensor for determining whether there is adequate lubricant flow in the system. The valve manifold receives lubricant from a pressurized source. The valve manifold includes a plurality of valves configured to control the flow of lubricant to respective applicators. The electronic controller controls the opening and closing of the valves. The pressure sensor measures lubricant pressure in the valve manifold, and outputs a signal to the electronic controller. The signal correlates to a lubricant pressure value in the valve manifold. The electronic controller uses the lubricant pressure values to derive an indication of lubricant flow (via the valves) to the applicators.

The present invention relates to a grease injection nipple coupled to a grease pipe such that the same can function as an opening/closing valve with regard to the corresponding grease pipe, the grease injection nipple being pushed against a nipple of a grease supply target and coupled thereto or separated therefrom. The grease injection nipple according to the present invention comprises a push body, a check valve, a nipple coupling portion, and a valve activation portion. The valve activation portion may operate such that, when the push body makes a primary movement in the forward direction, the check valve is opened and, when the push body makes a secondary movement in the forward direction after external force for the primary movement of the push body is released, the check valve is closed.

Various embodiments of valve assemblies are provided for use in connection with the fluid systems of machines such as engine-powered machines. The valve assemblies may be used for performing fluid refill operations, fluid evacuation operations, fluid purge operations, and other types of fluid operations in connection with machine maintenance.

The present invention relates to a grease replacement method of replacing grease in a case (84) including a sealable gear chamber (31, 36) accommodating a gear (85) as a member to be lubricated, a grease injection port (61, 62) configured to inject grease into the gear chamber (31, 36), and a discharge port (32, 37) configured to discharge the grease in the gear chamber (31, 36), and a grease suction device to be used to perform this method. The grease replacement method includes a suction step (S2) of sucking the grease in the gear chamber (31, 36) from the grease injection port (61, 62) with the discharge port (32, 37) being open, and discharging the grease outside the case (84), and an injection step (S4) of injecting new grease into the grease injection port (61, 62) and supplying the new grease to the gear (85). This facilitates discharging of old grease.

A coupler connected a hose of a grease gun includes a body having a path defined therethrough. A check valve unit and a sealing unit are located in the body. The check valve includes a spring which biases the sealing unit. A groove is defined in an outer surface of the body. A socket is mounted to the body and multiple pawls are received in the socket. The pawls each have a first end engaged with the groove, and a second end of each pawl is controlled to be connected to a fitting member. The socket has a flange extending from the inner periphery. The second ends of the pawls removably contact the flange. A trigger is pivotably connected to the body and drives the socket which is moved by pivoting the trigger so as to control the pawls to engaged with or release the fitting member.

A coupler connected a hose of a grease gun includes a body having a path defined therethrough. A check valve unit and a sealing unit are located in the body. The check valve includes a spring which biases the sealing unit. A groove is defined in an outer surface of the body. A socket is mounted to the body and multiple pawls are received in the socket. The pawls each have a first end engaged with the groove, and a second end of each pawl is controlled to be connected to a fitting member. The socket has a flange extending from the inner periphery. The second ends of the pawls removably contact the flange. A trigger is pivotably connected to the body and drives the socket which is moved by pivoting the trigger so as to control the pawls to engaged with or release the fitting member.