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:
Aug. 09, 2011
Filed:
Nov. 19, 2009
Hyoung Kyoun Ahn, Seoul, KR;
Ghi Young Kim, Seoul, KR;
Hyoung Kyoun Ahn, Seoul, KR;
Ghi Young Kim, Seoul, KR;
Medison Co., Ltd., Kangwon-do, KR;
Abstract
There is provided a caster device including a caster, a crank shaft, a rotating member, a pushing member and a connecting rod. The crank shaft is coaxially coupled to a reciprocatingly rotatable cam element of the caster. The rotating member is rotatably coupled to a movable object. The rotating member has a plurality of pins spaced apart from one another in a circumferential direction. The pushing member is vertically movably coupled to the movable object. The pushing member rotates the rotating member by contact with the pin. The connecting rod and the crank shaft convert a rotation of the rotating member to a reciprocating rotation of the cam element. The caster is set to one of a plurality of operating modes according to the reciprocating rotation of the cam element.