System for a linear drive

• US 8,102,229 B2
• Filed: 11/23/2004
• Issued: 01/24/2012
• Est. Priority Date: 12/19/2003
• Status: Active Grant

• Current Assignee: Sew-Eurodrive GmbH & Company KG (BV Beteiligung GmbH & Company KG)
• Original Assignee: Sew-Eurodrive GmbH & Company KG (BV Beteiligung GmbH & Company KG)
• Inventors: Simon, Olaf, Mahlein, Jochen, Schmidt, Josef
• Primary Examiner(s): NGUYEN, TUYEN T
• Application Number:
  US10/583,479
• Publication Number:
  US 20080122294A1
• Time in Patent Office: 2,618 Days
• Field of Search: 336130-136, 307/17, 307/19, 307/104, 307/1
• US Class Current: 336/130
• CPC Class Codes: H02J 50/12 of the resonant type
• CPC Class Codes: H02J 50/402 the two or more transmitting or the two or more receiving devices being integrated in the same unit, e.g. power mats with several coils or antennas with several sub-antennas

Abstract

A system, whereby drive units on a movable part, e.g., a turntable or linear drive, are powered in a contactless manner via, in each instance, an inductive coupling to one or more primary conductors.

Claims

1. A system, comprising:

drive units arranged on a movable part, each drive unit powered in a contactless manner by an inductive coupling to at least one primary conductor;

wherein the at least one primary conductor is removably fixed to the drive units on the movable part, the at least one primary conductor being provided in at least one of (a) an indentation and (b) a cable duct of the drive unit.

2. The system according to claim 1, wherein the movable part includes at least one of (a) a turntable and (b) a linear drive.

3. The system according to claim 1, wherein the movable part is one of (a) rotationally mounted and (b) linearly movable.

4. The system according to claim 1, wherein the primary conductor is adapted to power the drive units in series.

5. The system according to claim 1, wherein at least one of (a) the primary conductor is supplied with energy in a contactless manner by stationary coil cores including at least one coil winding and (b) the primary conductor is supplied with energy by a loop wire.

6. The system according to claim 1, wherein the primary conductor is arranged as a closed loop.

7. The system according to claim 1, wherein at least one drive unit includes an electric motor and an electronic circuit adapted to power the electric motor, the drive unit powered inductively.

8. The system according to claim 1, wherein a primary conductor is provided on the drive unit such that an inductive coupling to a secondary winding included in the drive unit is providable.

9. The system according to claim 1, wherein at least one secondary winding is wound around at least one of (a) a U-shaped and (b) an E-shaped core.

10. The system according to claim 1, wherein the primary conductors are at least one of (a) partially encapsulated and (b) protected by a cover.

11. The system according to claim 1, wherein at least one drive unit is arranged at least one of (a) impervious, (b) smooth on an outer surface, (c) to provide a high degree of protection and (d) for use in at least one of (a) wet areas and (b) aseptic areas.

12. The system according to claim 1, wherein the drive unit does not include a plug-and-socket connector or other electrical connection terminals on its exterior.

13. The system according to claim 1, wherein the drive unit is arranged such that information is transmittable by modulating higher-frequency signals onto the primary conductor.