# US 7,464,949 B1 · Wheelchair wheel positioning system

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

- Number: US 7,464,949 B1
- Document ID: US7464949B1
- Status: Granted
- Kind: B1
- Application number: 11/248,063
- Filed: 2005-10-12
- Granted: 2008-12-16
- Earliest claimed: 2005-10-12
- Inventors: James R. Downey
- Web page: https://patentgrep.com/patent/US7464949B1

## CPC

- A61G 5/10: Parts, details or accessories
- A61G 7/1025: {Lateral movement of patients, e.g. horizontal transfer}
- A61G: TRANSPORT, PERSONAL CONVEYANCES OR ACCOMMODATION SPECIALLY ADAPTED FOR PATIENTS OR DISABLED PERSONS (appliances for aiding patients or disabled persons to walk A61H3/00); OPERATING TABLES OR CHAIRS; CHAIRS FOR DENTISTRY; FUNERAL DEVICES (embalming corpses A01N1/00)

## Abstract

A wheelchair wheel positioning system for providing an unobstructed path into and out of a wheelchair. The wheelchair wheel positioning system includes a frame member fastened to a wheelchair frame, an actuation member pivotably connected to both a frame bar and a rear wheel of the wheelchair and a stabilizer member utilized for lifting and maintaining the wheelchair in place. The actuation member pivotally connects at one end to the frame member and pivotally connects near the middle to a rear wheel of the wheelchair. The stabilizer member is affixed near the middle of the actuation member at a preferred angle. As the actuation member and rear wheel are rotated rearward, the stabilizer member contacts the floor surface to lift the rear wheel that the wheelchair wheel positioning system is attached to and stabilizes the wheelchair for entry and exit.

## Claims

### Claim 1

A wheelchair wheel positioning system, hereinafter called a wheelchair accessory, comprising:
a wheelchair, which is required for mounting the wheelchair accessory;
a frame member (70) connected to the framework of wheelchair;
an actuation member (20) pivotally-connected to frame member (70) and a rear wheel of wheelchair; and;
a stabilizing member (50) attached to actuation member (20); and,
a handle member (30) pivotally connected to actuation member (20);
a locating member (60) pivotally connected to actuation member, wherein the locating member (60) includes a front and an aft notch for receiving pin (72); and;
a connecting link (40) pivotally connected to handle, member (30) and locating member (60).

### Claim 2 (depends on 1)

A wheelchair accessory of claim 1, comprising a wheelchair, which is required for mounting the wheelchair accessory and provides a safe transfer for the user by moving either or both rear wheels rearward, clear of the wheelchair seat, and locking the wheelchair in position during transfers; a frame member (70) connected to the framework of wheelchair at an angle of approximately 20 degrees; an actuation member (20) pivotally connected to frame member (70) and a rear wheel of wheelchair; and; a stabilizing member (50) attached to actuation member (20); and, a handle (30) including a grip pivotally connected to actuation member (20); a locating member (60) pivotally connected to actuation member (20), wherein the locating member (60) includes a front and an aft notch for receiving pin (72); and; a connecting link (40) pivotally connected to handle member (30) and locating member (60); a stabilizing member (50) is attached to actuation member (20) at an angle of approximately 27 degrees, wherein the lower end of stabilizing member (50) extends beyond the perimeter of the rear wheel, and wherein stabilizing member (50) is positioned approximately vertical to the floor surface when forward notch in locating member (60) aligns with pin (72) in frame member (70), lifting the wheel clear of the floor and locking the wheelchair in a safe position for transferring.

### Claim 3 (depends on 2)

The wheelchair accessory of claim 2, wherein the lower end of stabilizing member (50), is covered with a material resistant to slipping to prevent wheelchair from moving during transfers.

### Claim 4 (depends on 2)

The wheelchair accessory of claim 2, wherein the lower end of stabilizing member (50), is covered with a material resistant to wear caused by continual use.