# US 10,871,207 B2 · Hydraulic tensioner expandable clip lock

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- Number: US 10,871,207 B2
- Document ID: US10871207B2
- Status: Granted
- Kind: B2
- Application number: 16/052,979
- Filed: 2018-08-02
- Published: 2020-02-06
- Granted: 2020-12-22
- Earliest claimed: 2018-08-02
- Assignees: BorgWarner Inc.
- Applicants: BorgWarner, Inc.
- Inventors: Paul Freemantle; SeongDo Hong; Nicholas D. Andrus
- Web page: https://patentgrep.com/patent/US10871207B2

## CPC

- F16H 7/08: Means for varying tension of belts, ropes or chains (pulleys of adjustable construction F16H55/52)
- F02B 67/06: driven by means of chains, belts, or like endless members
- F16H 2007/0812: {Fluid pressure}
- F16H 2007/0872: {Sliding members}
- F16H 2007/0878: {Disabling during transport}
- F16H 2007/0893: {Circular path}
- F16H: GEARING
- F02B: INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL (gas-turbine plants F02C; hot-gas or combustion-product positive-displacement engine plants F02G)

## Abstract

A clip lock for securing an expandable clip of a chain tensioner includes an elongated member having a first surface configured to engage an exterior surface of the chain tensioner and a second surface, spaced apart from the first surface, that is configured to engage the expandable clip and maintain the expandable clip in contact with an annular groove of a chain tensioner component preventing radially-outward expansion and axial movement of the expandable clip with respect to the chain tensioner component while the first surface engages that exterior surface of the hydraulic tensioner and the second surface engages the expandable clip.

## Claims

### Claim 1

A clip lock for securing an expandable clip of a chain tensioner, comprising:
an elongated member having a first surface configured to engage an exterior surface of the chain tensioner and a second surface, spaced apart from the first surface, that is configured to engage the expandable clip and maintain the expandable clip in contact with an annular groove of a chain tensioner component preventing radially-outward expansion and axial movement of the expandable clip with respect to the chain tensioner component while the first surface engages that exterior surface of the hydraulic tensioner and the second surface engages the expandable clip.

### Claim 2 (depends on 1)

The clip lock recited in claim 1, further comprising a groove formed in the second surface.

### Claim 3 (depends on 1)

The clip lock recited in claim 1, wherein the chain tensioner component is a piston received within a piston bore formed in a housing.

### Claim 4 (depends on 1)

The clip lock recited in claim 1, wherein the elongated member has a substantially circular cross-sectional shape.

### Claim 5 (depends on 1)

The clip lock recited in claim 1, wherein the first surface and the second surface are planar.

### Claim 6 (depends on 1)

The clip lock recited in claim 1, further comprising a handle connected to the elongated member.

### Claim 7 (depends on 6)

The clip lock recited in claim 6, wherein the handle is planar.

### Claim 8

A clip lock for securing an expandable clip of a chain tensioner, comprising:
a positioning portion having a receiving surface that is configured to engage a chain tensioner component; and
an elongated member, attached to the positioning portion, having a first surface configured to engage an exterior surface of the chain tensioner and a second surface, spaced apart from the first surface, that is configured to engage the expandable clip and maintain the expandable clip in contact with an annular groove of a piston preventing radially-outward expansion and axial movement of the expandable clip with respect to the piston while the first surface engages that exterior surface of the chain tensioner and the second surface engages the expandable clip.

### Claim 9 (depends on 8)

The clip lock recited in claim 8, further comprising a groove formed in the second surface.

### Claim 10 (depends on 8)

The clip lock recited in claim 8, wherein the chain tensioner component is a piston received within a piston bore formed in a housing.

### Claim 11 (depends on 8)

The clip lock recited in claim 8, wherein the elongated member has a substantially circular cross-sectional shape.

### Claim 12 (depends on 8)

The clip lock recited in claim 8, wherein the first surface and the second surface are planar.

### Claim 13 (depends on 8)

The clip lock recited in claim 8, further comprising a groove formed in the second surface.

### Claim 14 (depends on 8)

The clip lock recited in claim 8, wherein the chain tensioner component is a piston received within a piston bore formed in a housing.

### Claim 15 (depends on 8)

The clip lock recited in claim 8, wherein the elongated member engages a first leg of the expandable clip.

### Claim 16 (depends on 8)

The clip lock recited in claim 8, wherein the positioning portion comprises a decreasing cross-sectional area.

### Claim 17 (depends on 8)

The clip lock recited in claim 8, wherein the elongated member is attached to the positioning portion at a distal end.