Controllable drive for a motor vehicle, in particular for a...

Details Controllable drive for a motor vehicle, in particular for a... Controllable drive for a motor vehicle, in particular for a...

2011-03-29

2011-03-29

Kramer, Devon C (Department: 3746)

Pumps

Condition responsive control of drive transmission or pump...

Disconnectable drive element

C417S319000, C192S058610

Reexamination Certificate

active

07914264

ABSTRACT:
A controllable drive (1) suitable for a motor vehicle coolant pump (2) comprises a rotatably mounted shaft (5), a driven member (7) which is rotationally fixedly mounted on the shaft (5), a driving member (9) which is mounted so as to be rotatable relative to the shaft (5), and a coupling region (7/8) which is arranged between the driving and driven members (9, 7) and holds a viscous fluid. At least one first flow path and at least one second flow path connect a fluid reservoir to the coupling region (7/8), and an actuation device (11a, 11b, 12, 13, 14) changes at least one passage opening of at least one flow path. A coupling housing (8, 8a, 8b) is connected to the driving member (9), and the actuator (14) is arranged within the coupling housing (8, 8a, 8b).

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