US Patent 10179698 Transfer device and method of controlling transfer device

A transfer device includes a first engaging member to be inserted between a first engagement receiving portion, which is spaced away from a first surface portion of an article toward an outside in a transfer direction by a predetermined distance, and the first surface portion, due to rotation of the first engaging member about a first axis of rotation along the transfer direction. The first engaging member includes a first push-up portion which lifts the first surface portion by making contact with a first jaw portion in a state in which the first jaw portion protrudes toward the outside from the first surface portion.