公开(公告)号：US11253418B2

公开(公告)日：2022-02-22

申请号：US16849929

申请日：2020-04-15

Applicant: Wistron Corp.

Inventor： Chen Yi Liang ,  Cheng Hsing Liu ,  Chien-Wei Chen

IPC: A61H3/04

Abstract: An omnidirectional wheel is provided. The omnidirectional wheel includes a support unit, a major wheel, a first minor wheel and a second minor wheel. The major wheel is annular and is rotatably disposed on the support unit. The first minor wheel is rotatably disposed on the support unit. The first minor wheel is disposed on one side of the major wheel. The second minor wheel is rotatably disposed on the support unit. The second minor wheel is disposed on the other side of the major wheel. The omnidirectional wheel can easily roll over an obstacle when the omnidirectional wheel rolls laterally or forward.

公开(公告)号：US11471362B2

公开(公告)日：2022-10-18

申请号：US16935151

申请日：2020-07-21

Applicant: Wistron Corp.

Inventor： Chen Yi Liang ,  Cheng Hsing Liu ,  Chien-Wei Chen

IPC: A61H3/04 ,  A61G5/00

Abstract: A walker is provided. The walker includes a walker body, a handle unit, a first wheel unit and a second wheel unit. The handle unit is connected to the walker body. The first wheel unit is connected to the walker body. The second wheel unit is connected to the walker body. In an auxiliary mode, a first gap is formed between the first wheel unit and the second wheel unit. In a driving mode, a second gap is formed between the first wheel unit and the second wheel unit. The first gap is smaller than the second gap.