This device allows for gentle coupling.

A full wheel drive system allows to suppress as desired the differential effect.

A holding device (6) is linked by friction and/or interlocked with the needle carrier (4) and can be at least partially interlocked with a coupling part of the syringe body (2).

A pulling too (90) contains a plurality of dog members (122) disposed about a mandrel, and a spring (116) that urges the dob members into engagement with a protuberance on the mandrel.

The revolving roller (6) is provided with recesses (12) interlockingly engaged by the chain (3) when the latter is deflected.

A vibrator comprises two axially parallel, interlocking, counterrotating unbalanced shafts.

A coupling clutch activates the front-wheel drive in just half a second.

The holding device (40; 75) has an accessory device for hydraulic and/or spring-assisted reinforcement of the holding forces.

At least eight forward speeds are achieved through a combination of locking the respective synchronizers and engaging the respective clutches.

The constructional element(s) (14), and tube (12) are connected by interlocking and/or frictional engagement.

In this operating position, the clamp strap (5) surrounds the opposed surfaces (9) of the strips (4) in such manner as to cause them to interlock at least in certain areas, and thus aligns them.

In summary, the HRBN is a hydraulic cylinder with integrated clutch for locking at the end of the stroke.

A sliding tooth sleeve (7) is then placed over a toothing on the input and output sides, and a pure positive fit is established after the multi-disk clutch (5) is opened.

The invention relates to a heavy-duty clutch, consisting of a synchronizer part (4), designed as a multi-disk clutch (5), and a positive fit part, designed as a sliding tooth sleeve (7).

The cutting hammer (2) can be mounted in the desired oscillating position with respect to the digging bucket arm (1) by means of a positive clutch (6, 7, 8, 9).