# US 11,027,849 B1 · Portable leg lift device for an airplane seat

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- Number: US 11,027,849 B1
- Document ID: US11027849B1
- Status: Granted
- Kind: B1
- Application number: 16/985,032
- Filed: 2020-08-04
- Granted: 2021-06-08
- Earliest claimed: 2020-08-04
- Applicants: Srinivasan Chellappa
- Inventors: Srinivasan Chellappa
- Web page: https://patentgrep.com/patent/US11027849B1

## CPC

- B64D 11/0607: {with devices specially adapted for exercising during travel; with devices specially adapted to prevent thrombosis}
- B64D 11/0643: {Adjustable foot or leg rests}
- A47C 7/52: of detachable type
- B64D 11/0639: {with features for adjustment or converting of seats}
- B64D: EQUIPMENT FOR FITTING IN OR TO AIRCRAFT; FLIGHT SUITS; PARACHUTES; ARRANGEMENT OR MOUNTING OF POWER PLANTS OR PROPULSION TRANSMISSIONS IN AIRCRAFT
- A47C: CHAIRS; SOFAS; BEDS

## Abstract

A portable leg lift device for an airplane seat with a seat panel, a movable leg lift panel, a stationary panel, an inflatable chamber, an inflation tube, an outer foldable outer panel and a inner foldable panel. The outer foldable panel is attached to the seat panel and the movable leg lift panel. The inner foldable panel is attached to the stationary panel. The inner foldable panel is also attached to the outer foldable panel. The inflatable chamber is attached on its distal surface to the inner wall of the movable leg lift panel and on its proximal surface to the stationary panel. The seat panel rests on the surface of an airplane seat. The inflation chamber can be inflated thereby lifting the movable leg panel and raising the lower legs of a person sitting on the seat panel.

## Claims

### Claim 1

A portable leg lift device for an airplane seat comprising:
a seat panel;
a movable leg lift panel, wherein the movable leg lift panel comprises an inner wall and an outer wall, the inner wall disposed closer to the airplane seat;
a non-moving panel;
an inflatable chamber, wherein the inflatable chamber comprises a front surface and a rear surface;
an inflation tube, wherein the inflation tube comprises a proximal end attached to an orifice in the inflatable chamber and a distal end removably covered by an airtight cap;
an outer foldable panel;
an inner foldable panel, wherein the inner foldable panel comprises a proximal and a distal end;
the outer foldable panel fixedly attached to the seat panel and the movable leg lift panel;
the proximal end of the inner foldable panel fixedly attached to the non-moving panel;
the distal end of the inner foldable panel also fixedly attached to the movable leg lift panel;
the inflatable chamber attached on its front surface to the inner wall of the movable leg lift panel and on its proximal surface to the non-movable panel;
the seat panel capable of resting on a surface of an airplane seat;
the non-movable panel capable of being in close contact with the front surface of a standard airplane seat; and
the inflatable chamber capable of being inflated whereby exerting a force to rotatably lift the movable leg lift panel thereby raising the lower legs of a passenger sitting on the seat panel.

### Claim 2 (depends on 1)

A portable leg lift for an airplane seat as claimed in claim 1 wherein the inflation tube is attached to a rubber ball type air pump.

### Claim 3 (depends on 1)

A portable leg lift for an airplane seat as claimed in claim 1 wherein the outer foldable panel includes a carry handle.

### Claim 4 (depends on 1)

A portable leg lift for an airplane seat as claimed in claim 1 wherein the seat panel and the movable leg lift panel can be folded in book like fashion for compact storage and transport.

### Claim 5 (depends on 1)

A portable leg lift for an airplane seat as claimed in claim 1 wherein the inflatable chamber is made in an accordion type fashion allowing additional leg lifting ability.

### Claim 6 (depends on 1)

A portable leg lift for an airplane seat as claimed in claim 1 wherein the seat panel is semi-rigid.

### Claim 7 (depends on 1)

A portable leg lift for an airplane seat as claimed in claim 1 wherein the movable leg lift panel is rigid.

### Claim 8 (depends on 7)

A portable leg lift for an airplane seat as claimed in claim 7 wherein the movable rigid panel includes a cushion panel fixedly attached to its distal surface to allow more comfort for the passenger's lower legs.