An inner shaft (14) has a plurality of projections (82-90) which extend between opposite end portions of the inner shaft.

The first shaft (31) is formed by an outer rotating shaft (31a) and an inner rotating shaft (31b) which is inserted in the outer rotating shaft (31a).

The surgical instrument and handle comprise complementary features to ensure a secure connection between the instrument and handle. hi one embodiment the instrument comprises an outer shaft (12), an inner shaft (14) and an operative portion.

The contra rotating generator comprises a cylindrical armature supported on an inner shaft.

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An inner shaft (5) is concentrically arranged in the interior of the support shaft, said inner shaft (5) being rotatable relative to the support shaft (3).

The present invention relates to a camshaft (1) which comprises an inner shaft (5) which is arranged coaxially in the outer shaft (6).

A brake actuator mechanism has an inner shaft (42) received at least partially within an outer shaft (44) .

A seal and seal assembly (20) for providing a seal between an outer shaft (40) and an inner shaft (30).

Device for coupling an inner shaft (1) and an outer shaft (2) which slide along their common axis with balls (3) positioned between the two shafts.

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The disk portion connects the inner shaft to the cylinder and transmits the vibrational energy from the inner shaft to the cylinder.

The invention relates to a camshaft comprising a first hollow outer shaft and a second inner shaft arranged coaxially in the outer shaft (1) and mounted in such a way that it can rotate in relation to the outer shaft (1).

The invention relates to a device for coupling an inner shaft (1) and an outer shaft (2) sliding in the direction of the common axis (4) thereof, with balls (3) provided between the two shafts.

An inner shaft (8) is in turn mounted displaceably in the shafts (10, 11) and in the intermediate piece (6).