公开(公告)号：US10323624B2

公开(公告)日：2019-06-18

申请号：US15760695

申请日：2016-08-30

Applicant: ENDO KOGYO CO., LTD.

Inventor： Tomio Komaba

IPC: F03G1/00 ,  F03G1/02 ,  B60B33/00 ,  F03G1/08 ,  F16D41/06 ,  B60B33/04 ,  B62B5/00

Abstract: There is provided a spring-powered drive apparatus including a casing (102), an output shaft (103) mounted on the casing (102) in a relatively rotatable manner, a one way clutch (112) externally fitted on the output shaft (103) in the casing (102) and, a spiral spring (105, 107) housed in the casing and wound by turning of the output shaft (103) in the direction in which the one way clutch (112) transmits torque. Thus, there can be provided a compact spring-powered drive apparatus and a self-propelled caster that can be applied to a work cart or the like.