Foldable Leg Support

• US 20120181838A1
• Filed: 01/13/2011
• Published: 07/19/2012
• Est. Priority Date: 01/13/2011
• Status: Active Grant

• Current Assignee: Yao-Chuan Wu
• Original Assignee: Yao-Chuan Wu
• Inventors: Wu, Yao-Chuan
• Granted Patent: US 8,523,282 B2
• Time in Patent Office: Days
• US Class Current: 297/423.2
• CPC Class Codes: A47C 7/506 of adjustable type
• CPC Class Codes: A47C 7/5062 rectilinearly
• CPC Class Codes: A47C 7/5066 by rotation

Abstract

A foldable leg support contains two rotary arms and a supporting plane between the two rotary arms, and the two rotary arms being axially connected with a seat member, such that when in a rest, the foldable leg support is pull outward to expand the supporting plane, hence the legs are capable of being extended on the supporting plane comfortably to improve blood circulation, and the foldable leg support is suitable for any sizes of the legs; and when the foldable leg support is not used, the supporting plane is put between the two rotary arms, and then the rotary arms and the supporting plane are folded under an office chair, saving a store space.

Claims

1. A foldable leg support comprising:

two rotary arms and a supporting plane between the two rotary arms, and the two rotary arms being axially connected with a seat member.

2. The foldable leg support as claimed in claim 1, wherein two first ends of the two rotary arms are axially connected with two sides of the seat member respectively, and two second ends of the rotary arms are axially coupled with the supporting plane individually.

3. The foldable leg support as claimed in claim 2, wherein the supporting plane includes two semi-periphery projections disposed on two peripheral sides thereof respectively, and each semi-periphery projection is biased against by a spring, each rotary arm includes a notch fixed on an inner side thereof to retain with the semi-periphery projection.

4. The foldable leg support as claimed in claim 2, wherein the supporting plane includes two semi-periphery projections disposed on two peripheral sides thereof respectively, and each semi-periphery projection is biased against by a spring, each rotary arm includes a hole fixed on an inner side thereof to retain with the semi-periphery projection.

5. The foldable leg support as claimed in claim 3, wherein each rotary arm includes a limiting block defined on an inner side of the first end thereof.

6. The foldable leg support as claimed in claim 4, wherein each rotary arm includes a limiting block defined on an inner side of the first end thereof.

7. The foldable leg support as claimed in claim 1, wherein the two first ends of the two rotary arms are axially coupled with the two sides of the seat member, and the supporting plane is fixed between the two rotary arms.

8. The foldable leg support as claimed in claim 1, wherein the two first ends of two rotary arms are axially connected with the two sides of the seat member, and the supporting plane is slidably defined between the two rotary arms by using two guide rails formed on inner sides of the two rotary arms.

9. The foldable leg support as claimed in claim 1, wherein the seat member includes at least one positioning protrusion formed therebeneath, and a shaft is inserted through the positioning protrusions, the rotary arms are fitted on the shaft to connect with the positioning protrusions axially.

10. The foldable leg support as claimed in claim 9, wherein between the rotary arm and the positioning protrusions is defined a rotating bar, and each positioning protrusion includes two locking elements disposed therein, each locking element is retained with a boss of the rotating bar.

11. The foldable leg support as claimed in claim 10, wherein the locking element is selected from a cutout, a bore, and a recess.

12. The foldable leg support as claimed in claim 1, wherein the supporting plane is made of a soft fabric material and is formed by selecting from a curved surface and a flat surface.

13. The foldable leg support as claimed in claim 1, wherein the supporting plane is made of a soft net-shaped material and is formed by selecting from a curved surface and a flat surface.

14. The foldable leg support as claimed in claim 1, wherein the supporting plane is made of a feather material and is formed by selecting from a curved surface and a flat surface.