A gimbal apparatus is disclosed, including a tubular envelope with a variable length between first and second rim structures. A rigid ring structure inside the tubular envelope is connected to diametrically opposite first and second portions of the first rim structure, and is connected to diametrically opposite first and second portions of the second rim structure. A spoke bisects the ring structure.

An apparatus for reducing clearances within a flexible joint gimbal system. The apparatus comprises a washer having a centrally located hole. The washer includes a cylindrical side, wherein the cylindrical side is shaped to contact a side of a ring of the gimbal when the washer is located between a clevis of a gimbal and the ring. The washer further includes a spherical side, wherein the spherical side has a shape that enables the clevis to rotate with respect to the ring about an axis extending centrally through the hole in the washer when the washer is located between the clevis and the ring.

An apparatus for reducing clearances within a flexible joint gimbal system. The apparatus comprises a washer having a centrally located hole. The washer includes a cylindrical side, wherein the cylindrical side is shaped to contact a side of a ring of the gimbal when the washer is located between a clevis of a gimbal and the ring. The washer further includes a spherical side, wherein the spherical side has a shape that enables the clevis to rotate with respect to the ring about an axis extending centrally through the hole in the washer when the washer is located between the clevis and the ring.

A gas pipe joint contains: a connection pipe, a first threaded pipe, and a second threaded pipe. The connection pipe includes a first part and a second part, the first part has a first threaded orifice, and the second part has a second threaded orifice. The first threaded pipe includes a first coupling section, a first nut section, and a second coupling section. The second threaded pipe includes a second nut section and a third coupling section, the second nut section has a second screwing portion, and the third coupling section has at least one second recessed portion and a second groove. The third coupling section has a second shoulder. The second shoulder has a second lower gasket. The first groove has two first loops, and the second groove has two second loops.

A water delivery device includes a first conduit section and a second conduit section rotatably coupled to the first conduit section by a magnetic joint. The magnetic joint includes a plurality of magnets that cooperatively define a plurality of rotational positions between the first conduit 5 section and the second conduit section.

Systems, devices, and methods for treating a patient are disclosed. The systems can include a cryotherapy apparatus for selectively treating targeted tissue. The cryotherapy apparatus includes one or more stress relief couplings located along a conduit to help keep an applicator positioned at a treatment site without significant rotational torque being imparted to the applicator by the conduit so that the applicator does not tend to move relative to patient skin during a tissue treatment. The stress relief couplings can include swivel connectors and clamps that cooperate to minimize or limit a rotational force exerted on the applicator by the conduit after the applicator is applied to the patient's skin.

Systems, devices, and methods for treating a patient are disclosed. The systems can include a cryotherapy apparatus for selectively treating targeted tissue. The cryotherapy apparatus includes one or more stress relief couplings located along a conduit to help keep an applicator positioned at a treatment site without significant rotational torque being imparted to the applicator by the conduit so that the applicator does not tend to move relative to patient skin during a tissue treatment. The stress relief couplings can include swivel connectors and clamps that cooperate to minimize or limit a rotational force exerted on the applicator by the conduit after the applicator is applied to the patient's skin.

A flexible dual duct coupling, comprising: a coupling body having an inner flow passage and an outer flow passage therethrough; a first nut assembly configured for reversible attachment to the coupling body; and, a second nut assembly configured for reversible attachment to the coupling body, wherein the second nut assembly is opposite the first nut assembly.

A coupling device for joining two lines has two coupling parts that are coupled and connected together in the axial direction to connect the two lines to each other, and wherein the two coupling parts are fixed to each other via a plurality of spring-loaded coupling elements distributed in the circumferential direction of the coupling device, such that the two coupling parts are operable to be bent relative to each other with respect to a normal position by forces acting laterally with respect to the axial direction of the coupling device, and wherein the coupling elements in the bent position exert a restoring force on the coupling parts in the direction of the normal position by the spring load.

A compliant jumper tube fitting assembly may comprise an outer housing comprising a first annular cylindrical structure including a first opening defined by a base wall, and an inner housing comprising a second annular cylindrical structure including a second opening defined by an annular wall, wherein the inner housing is configured to generate a seal between an inner diameter wall of the outer housing and an outer diameter wall of the inner housing in response to inserting the inner housing into a mouth end of the outer housing, wherein the inner housing is configured to receive an end fitting and generate a seal between an inner diameter wall of the inner housing in response to inserting the end fitting into the inner housing.