The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Apr. 30, 1996
Filed:
Jan. 31, 1995
Yong E Kim, Guro-Ku, Seoul, KR;
Other;
Abstract
A convertible roller footwear comprises: a sole; an elongate bushing embedded in the sole and extending in a transverse direction of the sole to terminate at opposite open ends, the bushing having an inner circumferential surface and generally hemispherical recesses disposed on the inner circumferential surface in the vicinity of the opposite ends of the bushing; a plurality of roller assemblies, each including a hollow nipple removably fitted into the bushing, the nipple having a radial through-hole formed adjacent to an internal end of the nipple to receive a ball therein, a pushpin slidably inserted through the nipple, the pushpin having an annular groove for selective communication with the radial through-hole, the pushpin movable between a pushed-in position for allowing the ball to move radially inwardly into engagement with the annular groove and a pulled-out position for causing the ball to move radially outwardly into engagement with the recesses, and a roller rotatably mounted on an external end of the nipple.