发明申请
US20100077635A1 ARTICLES WITH RETRACTABLE TRACTION ELEMENTS 有权
具有可退回追踪元素的文章

ARTICLES WITH RETRACTABLE TRACTION ELEMENTS
摘要:
Articles of manufacture and articles of wear may include one or more retractable traction elements. A plurality of the retractable traction elements may be interconnected by a base member and may form an insert. Each of the retractable traction elements may include an extension inducing element and a ground (or other surface) contacting element. The extension inducing element may flex in response to an applied force and may cause the ground or other surface contacting element to extend and engage an underlying surface.
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