IP Library › Granted Patent US 10,165,831
Granted Patent B2
US 10,165,831 · App. 15/589,866 · Granted Jan 1, 2019

Shoelace

Inventors: Chung-Yang Tsai (Shengang Township, Changhua County, TW); Ching-Fu Tsai (Shengang Township, Changhua County, TW)
Assignee: San Dai Enterprise Co., Ltd.
A43C1/02A43C9/02
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Quick Facts
Patent No.
US 10,165,831
App. No.
15/589,866
Granted
Jan 1, 2019
Kind
B2
Abstract

An improved shoelace has an elastic inner core having a plurality of elastic members and a woven string covering the elastic inner layer. The woven string has a plurality of narrow sections and wide sections evenly disposed on two ends of the elastic inner core. Each narrow section wraps around the elastic inner core, each wide section is longer than each narrow section and separated from the elastic inner core. When the elastic inner core is not pulled, the wide sections overlap and fold onto the elastic inner core 10 and has a cone shape with at least three times thickness than the narrow section. When the elastic inner core is pulled, the wide sections are stretched straight.

Claims (2)

1. An improved shoelace comprising an elastic inner core and a woven string covering the elastic inner layer; the woven string having a plurality of narrow sections and wide sections evenly disposed on two ends of the elastic inner core; each narrow section wrapping the elastic inner core, each wide section being longer than each narrow section and separated from the elastic inner core; wherein when the elastic inner core is not pulled the wide sections overlap and fold onto the elastic inner core, and when the elastic inner core is pulled, the wide sections are stretched straight.

2. The improved shoelace as claimed in claim 1 , wherein the elastic inner core comprises a plurality of elastic members.

Assignments (1)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded May 10, 2017
From: TSAI, CHUNG-YANG; TSAI, CHING-FU
To: SAN DAI ENTERPRISE CO., LTD.
Reel/Frame 042327/0371 →
Priority Claims (1)
TW 105208561 U · Jun 7, 2016 · national
Continuity (1)
Related Publication 20170367442A1 · Dec 28, 2017
Cited By (1)
US 1,130,993