|국가/구분||United States(US) Patent 등록|
|미국특허분류(USC)||280/652; 280/040; 280/654; 280/655; 280/04729|
|발명자 / 주소|
|대리인 / 주소||
|인용정보||피인용 횟수 : 26 인용 특허 : 13|
A collapsible trolley includes a main member provided with a retractable pull rod and a handle; a carrier frame, which has one end pivotally provided on the main member and is rotatable between an extended position and a collapsed position; two wheel assemblies, each of which includes a wheel frame and a wheel, the two wheel frame being pivotally provided on the main member such that the two wheel assemblies can be rotated outwardly to a use position or rotated inwardly to a collapsed position; and two first gears and two second gears, in which the two f...
1. A collapsible trolley, comprising:a main member having a handle; a carrier frame having one end pivotally mounted on said main member so that said carrier frame can be rotated to an extended position substantially perpendicular to said main body, or to a collapsed position substantially parallel to said main member; two wheel assemblies, each of which includes a wheel frame and a wheel mounted pivotally on said wheel frame, wherein said wheel frames are pivotally mounted on said main member such that said two wheel assemblies can be rotated to a use p...