Actuator device with intermediate rollers

Details Actuator device with intermediate rollers Actuator device with intermediate rollers

2006-02-21

2006-02-21

Fenstermacher, David (Department: 3682)

Machine element or mechanism

Gearing

Directly cooperating gears

C074S424890

Reexamination Certificate

active

07000495

ABSTRACT:
Actuator device comprising a support (2); a longitudinal drive rod (8), part of the rear end (9) of which is mounted and rotates inside the support, and of which a front end section (17) has an external screw thread (18) and on its annular section, gear teeth (19); a longitudinal sheath (39) positioned around and coaxially to the drive rod has an internal screw thread; a series of rollers (28) positioned longitudinally between the drive rod and the sheath and having an external screw thread engaged with the external screw thread of the drive rod and with the internal screw thread of the sheath, and gear teeth engaged with the gear teeth of the drive rod. The helix angle of the screw thread of the rollers is equal to the screw thread helix angle of the screw thread of the drive rod, and different from the helix angle of the screw thread of the sheath.

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