IP Library Granted Patent US 7,866,062
Granted Patent B2
US 7,866,062 · App. 11/577,269 · Granted Jan 11, 2011

Footwear separable to two piece

Assignee: Sungshin New Material Co., Ltd.
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Quick Facts
Patent No.
US 7,866,062
App. No.
11/577,269
Granted
Jan 11, 2011
Kind
B2
Abstract

Disclosed herein is footwear separable into two pieces in which an insertion body is adapted to be fit into an insertion recess formed at the heel portion of a footwear body, for absorbing the impact applied to a wearer upon walking, thus to achieve better wearing effect, the insertion body is freely assembled with and separated from the footwear body, thus to form a variety of designs thereon, the insertion recess has a drain hole connected from the bottom portion thereof to the corresponding bottom portion of the footwear body, thus to prevent water from gathering into the insertion recess, and if the footwear body is formed of a polyurethane material, the insertion body is formed of an ethyl-vinyl acetate (EVA) material, and vice versa, thus to provide high flexibility to the footwear, which makes the wearer feel comfortable.

Claims (11)

1. A footwear and separable into two pieces, the footwear comprising:

a footwear body having an insertion recess formed on an upper surface at a sole portion thereof, the insertion recess having a drain hole formed on the bottom portion thereof for preventing water from gathering in the insertion recess by draining through the drain hole, the footwear body made of a first plastic material; and

an insertion body adapted to fit to the insertion recess of the footwear body in such a manner as to be separable from the footwear body, for absorbing impact to a wearer's sole portion, the insertion body being tapered such that the bottom surface thereof becomes larger than the top surface thereof and made of a second plastic material which is softer than the first plastic material, the top surface of the insertion body having a convex surface contour with a central area thereof protruding upwardly from the upper surface of the footwear body so as to further facilitate absorption of the impact to the wear's sole portion.

2. The footwear according to claim 1 , wherein the insertion recess is formed at a heel portion of the footwear body, and the second plastic material is EVA (ethylene-vinyl acetate) or polyurethane material.

3. The footwear according to claim 1 , wherein the insertion recess and the insertion body each have a circular or oval shape.

4. The footwear according to claim 3 , wherein the footwear is a sandal or slipper.

5. A footwear in the form of sandal or slipper and separable into two pieces, the footwear comprising:

a footwear body having a shape of sandal or slipper, the footwear body including an insertion recess of generally circular or oval shape formed on an upper surface at a sole portion thereof, the insertion recess having a drain hole formed on the bottom portion thereof for preventing water from gathering in the insertion recess by draining through the drain hole, the footwear body made of a first plastic material; and

an insertion body of generally circular or oval shape adapted to fit to the insertion recess of the footwear body in such a manner as to be separable from the footwear body, for absorbing impact to a wearer's sole portion, the insertion body being tapered such that the bottom surface thereof becomes larger than the top surface thereof and made of a second plastic material softer than the first plastic material, the top surface of the insertion body having a convex surface contour with a central area thereof protruding upwardly from the upper surface of the footwear body so as to further facilitate absorption of the impact to the wear's sole portion.

6. The footwear according to claim 5 , wherein the footwear is formed of two pieces, namely the footwear body and the insertion body.

7. The footwear according to claim 5 , wherein the first plastic material is a polyurethane material and the second plastic material is EVA (ethylene-vinyl acetate).

Assignments (1)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Apr 13, 2007
From: YANG, JANG SIK
To: SUNGSHIN NEW MATERIAL CO., LTD.
Reel/Frame 019158/0742 →
Priority Claims (1)
KR 20-2004-0028971 U · Oct 13, 2004 · national
Continuity (1)
Related Publication 20070245593A1 · Oct 25, 2007