# US 2008/0185896 A1 · Chair footring adjustment mechanism

> Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt

- Number: US 2008/0185896 A1
- Document ID: US20080185896A1
- Status: Published application
- Kind: A1
- Application number: 11/701,191
- Filed: 2007-02-01
- Published: 2008-08-07
- Earliest claimed: 2007-02-01
- Inventors: Chen Wei
- Web page: https://patentgrep.com/patent/US20080185896A1

## CPC

- A47C 7/5064: {in vertical direction}
- A47C 7/004: {for chairs or stools with central column, e.g. office chairs}
- A47C 7/506: {of adjustable type}
- A47C: CHAIRS; SOFAS; BEDS

## Abstract

The present invention provides a chair assembly having a support member defining a plurality of positioning stations separated by a predetermined vertical distance. A coupling element may be included that defines a first portion and a second portion, such that the first and second portions are pivotably coupled to one another. The coupling element may be engageable with one or more of the positioning stations of the support member. A foot ring may also be included, where the foot ring is engageable with the coupling element to be positioned at a desired height while being securely affixed to the coupling element and thus, the support member of the chair assembly.

## Claims

### Claim 1

A chair assembly, comprising:
a support member defining a plurality of positioning stations;
a coupling element engageable with at least one of the positioning stations; and
a foot ring engageable with the coupling element.

### Claim 2 (depends on 1)

The chair assembly according to claim 1, wherein at least one positioning station is defined by a groove.

### Claim 3 (depends on 2)

The chair assembly according to claim 2, wherein the positioning stations are separated by a predetermined vertical distance.

### Claim 4 (depends on 3)

The chair assembly according to claim 3, wherein the coupling element includes an engagement structure matable with at least one of the positioning stations.

### Claim 5 (depends on 4)

The chair assembly according to claim 4, wherein the engagement structure defines a protruding rim positionable within one of the plurality of grooves.

### Claim 6 (depends on 1)

The chair assembly according to claim 1, wherein the coupling element defines a hollow passage for receiving a portion of the support member.

### Claim 7 (depends on 6)

The chair assembly according to claim 6, wherein the coupling element includes a first portion and a second portion pivotably coupled to the first portion.

### Claim 8 (depends on 1)

The chair assembly according to claim 1, wherein the coupling element defines a first end and a second end, the second end having a width larger than that of the first end.

### Claim 9 (depends on 8)

The chair assembly according to claim 8, wherein the foot ring defines a central opening slideably engageable with at least a portion of the coupling element.

### Claim 10 (depends on 1)

The chair assembly according to claim 1, wherein the support member is an elongated, cylindrically shaped member.

### Claim 11 (depends on 10)

The chair assembly according to claim 10, wherein each positioning station is defined by an annular groove circumscribing the cylindrically shaped member.

### Claim 12

A coupling element for a chair assembly, comprising:
a first portion defining a substantially arcuate body;
a second portion defining a substantially arcuate body, wherein the second portion is movably coupled to the first portion.

### Claim 13 (depends on 12)

The coupling element according to claim 12, wherein the first and second portions are positionable about each other to form a substantially cylindrical shape defining a passage therethrough

### Claim 14 (depends on 13)

The coupling element according to claim 13, wherein the coupling element further defines a first end and a second end, the second end having a width larger than that of the first end.

### Claim 15 (depends on 14)

The coupling element according to claim 14, wherein the coupling element includes an engagement structure defined by a protruding rim.

### Claim 16

A method of positioning a foot ring about a chair assembly, comprising the steps of:
providing a support member, the support member defining a plurality of positioning stations;
affixing a coupling element to at least one of the positioning stations of the support member; and
slideably positioning the foot ring about the coupling element.

### Claim 17 (depends on 16)

The method according to claim 16, wherein the coupling element defines a protruding rim matable with at least one of the plurality of positioning stations.

### Claim 18 (depends on 16)

The method according to claim 16, wherein the coupling element defines a first end and a second end, the second end having a width larger than that of the first end.