|국가/구분||United States(US) Patent 등록|
|국제특허분류(IPC7판)||B60B-027/00 B60B-001/00 B60B-011/10 B60B-011/00 B60B-015/26 B60B-015/00 B60B-019/00 B60B-033/00|
|미국특허분류(USC)||280/079.11; 301/005.23; 301/040.2; 301/005.1; 016/045; 016/046; 016/047|
|발명자 / 주소|
|출원인 / 주소|
|대리인 / 주소||
|인용정보||피인용 횟수 : 13 인용 특허 : 14|
A low profile roller includes a wheel mounted on a hollow hub and having a roller ball mounted within the hollow hub. The roller is configured to function in a first, low profile operating mode when the roller ball is in contact with a support surface and in a second, high profile mode when the wheel is in contact with the support surface. A base for a movable support platform includes a base frame and a pivot sleeve rotatably mounted to the base frame and non-rotatably mounted to an arm connected to the hub. The pivot sleeve is configured to rotate the ...
What is claimed is: 1. A convertible low profile roller comprising: a hub; a first roller rotatably mounted to the hub and having an axis of rotation; a second roller rotatably mounted to the hub and having an axis of rotation; wherein the axis of rotation of the first roller intersects the second roller and the axis of rotation of the second roller intersects the first roller, and wherein the first roller is configured to contact a floor surface with the hub in a first orientation and the second roller is configured to contact the floor surface with th...