A piston unit of a working cylinder has first and second coupling partners. The first coupling partner is a piston. The second coupling partner a piston rod. The piston rod is inserted axially into the piston. Each of the coupling partners has an annular groove. The groove of the piston rod is an external groove. The groove of the piston is an internal groove. The grooves of the coupling partners lie opposite one another. The unit has a coupling strand which engages in the grooves of the coupling partners and is placed into engagement by insertion into an annular groove gap defined by the grooves. The engagement of the coupling strand in the grooves produces a form-locking connection between the partners. The piston rod is oversized in relation to the piston and provides an additional frictional connection.

A piston unit of a working cylinder has first and second coupling partners. The first coupling partner is a piston. The second coupling partner a piston rod. The piston rod is inserted axially into the piston. Each of the coupling partners has an annular groove. The groove of the piston rod is an external groove. The groove of the piston is an internal groove. The grooves of the coupling partners lie opposite one another. The unit has a coupling strand which engages in the grooves of the coupling partners and is placed into engagement by insertion into an annular groove gap defined by the grooves. The engagement of the coupling strand in the grooves produces a form-locking connection between the partners. The piston rod is oversized in relation to the piston and provides an additional frictional connection.

The invention relates in particular to a nut 1 for a clamping mechanism 10, a clamping mechanism 10 comprising a tie bolt 11 and two nuts 1, a vulcanizing press 20 comprising clamping mechanisms 10 and a support device 23.

A pin comprises a metal body extending along a longitudinal insertion axis (Ox) and has a first and a second end along the longitudinal axis (Ox), an upper face and a lower face opposite the upper face. The pin has two convex portions each having an inclined inner wall and an inclined outer wall, the inclined walls of each convex portion forming a ridge and extending along the longitudinal axis. At least one ridge has on its lower face a protruding blade obtained by cutting and folding the metal body along the longitudinal axis. A concave portion of the pin connects the inner walls of each convex portion via a central surface. The pin has at least one blocking member.

A threaded fastener composed of separate upper and lower portions with a small axial freedom of movement relative to one another. After being threaded into a blind hole together, the portions are moved relative to one another and locked in place, creating a distribution of stresses which resists backing-out of the fastener without the various drawbacks which limit prior art solutions to this and similar threaded fastener applications.

A threaded fastener composed of separate upper and lower portions with a small axial freedom of movement relative to one another. After being threaded into a blind hole together, the portions are moved relative to one another and locked in place, creating a distribution of stresses which resists backing-out of the fastener without the various drawbacks which limit prior art solutions to this and similar threaded fastener applications.

An assembly of a gas turbine engine includes a first component, a second component disposed radially outboard of the first component. The second component includes one or more flange segments circumferentially spaced apart by one or more flange openings. Each flange segment includes a groove extending radially outwardly from a radially inboard surface of each flange segment between the first component and the second component. A retaining wire extends along each groove and is located radially between the first component and the second component to axially retain the second component to the first component. A radial cross-sectional size of the retaining wire is greater than a radial gap between the radially inboard surface of the second component and the first component.

A joint assembly joins first and second components about a common axis. The first component has a first end portion having a radially outwardly facing surface shaped to fit radially inside a second surface of a hollow second end portion of the second component to form an interface between the opposing first and second surfaces. The first and second surfaces have a concavity extending laterally with respect to the axis such that when the first and second surfaces are opposingly arranged the opposing concavities define a cavity at the interface. A retaining member is insertable into the cavity at the interface to prevent axial separation of the first and second components. One of the first and second end portions has a free end protrusion axially spaced from the concavity and the other of the first and second end portions has an axially extending recess arranged to receive the free end.

A pin assembly component for earth working equipment comprises a body including at least one opening into which a pin is received to couple the pin assembly component to at least one other part. A hole extends transverse to and communicating with the opening. A hammerless lock is secured in the hole and is adjustable to alternatively retain the pin in the opening and release the pin to permit installation and removal of the pin from the opening. The lock is retained to the body in the hole when holding the pin and when releasing the pin.

A pin assembly component for earth working equipment comprises a body including at least one opening into which a pin is received to couple the pin assembly component to at least one other part. A hole extends transverse to and communicating with the opening. A hammerless lock is secured in the hole and is adjustable to alternatively retain the pin in the opening and release the pin to permit installation and removal of the pin from the opening. The lock is retained to the body in the hole when holding the pin and when releasing the pin.