# US 2017/0255222 A1 · Tensioning device having a transport securing concept

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- Number: US 2017/0255222 A1
- Document ID: US20170255222A1
- Status: Published application
- Kind: A1
- Application number: 15/507,558
- Filed: 2015-06-01
- Published: 2017-09-07
- Earliest claimed: 2014-09-08
- Assignees: Schaeffler Technologies AG & Co. KG
- Applicants: Schaeffler Technologies AG & Co. KG
- Inventors: Thomas Ullein; Matthias Goeb
- Web page: https://patentgrep.com/patent/US20170255222A1

## CPC

- G05G 5/06: for holding members in one or a limited number of definite positions only ({G05G5/005}, G05G5/03, G05G5/05, G05G5/28 take precedence)
- F16H 7/08: Means for varying tension of belts, ropes or chains (pulleys of adjustable construction F16H55/52)
- F16H 2007/0806: {Compression coil springs}
- F16H 2007/0812: {Fluid pressure}
- F16H 2007/0859: {Check valves}
- F16H 2007/0878: {Disabling during transport}
- F16H 2007/0891: {Linear path}
- F16H 2057/0093: {Means or measures for transport, shipping or packaging}
- G05G: CONTROL DEVICES OR SYSTEMS INSOFAR AS CHARACTERISED BY MECHANICAL FEATURES ONLY ("Bowden" or like mechanisms F16C1/10; gearings or mechanisms not peculiar to this purpose F16H; speed changing or reversing mechanisms for gearings conveying rotary motion F16H59/00 - F16H63/00)
- F16H: GEARING

## Abstract

A tensioning device (1) for tensioning a traction mechanism of a traction mechanism drive, including a housing (2), a piston (3) that is mounted such that the piston can be displaced in an axial direction inside the housing (2), and a transport securing element (4), which in at least one transport position of the tensioning device (1) is arranged in the housing (2) transversely to the piston (3) and in abutment with the piston (3) such that a displacement of the piston (3) in at least one first axial direction is blocked. The transport securing element (4) is provided with a support portion (5), wherein in the transport position at least one first web area (6) of the support portion (5) is in abutment with one end face (7) of the piston (3), and an additional web area (8) of the support portion (5) extending in an axial direction away from the first web area (6) is supported in the housing (2), at least in a radial direction.

## Claims

### Claim at position 1

1-10. (canceled)

### Claim 11

A tensioning device for tensioning a traction mechanism of a traction mechanism drive, the tensioning device comprising:
a housing;
a piston displaceably supported in the axial direction within this housing; and
a transport securing element, the transport securing element, in at least one transport position of the tensioning device, being situated transversely to the piston and in abutment with the piston in the housing in such a way that a displacement of the piston in at least one first axial direction is blocked,
the transport securing element including a supporting section, a first web area of the supporting section being in abutment with an end face of the piston in the transport position, and a second web area of the supporting section, the second web area extending away from the first web section in the axial direction, being supported on the housing at least in the radial direction.

### Claim 12 (depends on 11)

The tensioning device as recited in claim 11 wherein the transport securing element has an L-shaped, double L-shaped, S-shaped or Z-shaped cross section, at least in the area of the supporting section, viewed in cross section, the first web area being designed as a first leg of the cross section and the second web area being designed as a second leg of the cross section, or another, third web area of the supporting section being designed as a third leg of the cross section.

### Claim 13 (depends on 11)

The tensioning device as recited in claim 11 wherein the transport securing element is designed as a pin-shaped component, or an additional web area is longer than the first web area, viewed in the axial direction of the piston.

### Claim 14 (depends on 11)

The tensioning device as recited in claim 11 wherein an inner side of the first web area abuts the end face of the piston in the transport position.

### Claim 15 (depends on 14)

The tensioning device as recited in claim 14 wherein an outer side of the first web area facing away from the inner side of the first web area abuts a hook-shaped projection of the housing in the transport position.

### Claim 16 (depends on 11)

The tensioning device as recited in claim 11 wherein an inner side of an additional web area faces an outer shell side of the piston in the transport position.

### Claim 17 (depends on 16)

The tensioning device as recited in claim 16 wherein an outer side of the second web area faces away from the inner side of the additional web area is supported on the housing in the radial direction in the transport position.

### Claim 18 (depends on 11)

The tensioning device as recited in claim 11 wherein an additional web area of the transport securing element is positioned in a recess of the housing in the transport position.

### Claim 19 (depends on 11)

The tensioning device as recited in claim 11 wherein the transport securing element is manufactured from a metal material or from a plastic material.

### Claim 20 (depends on 11)

The tensioning device as recited in claim 11 wherein the transport securing element is manufactured from a profiled wire.