| 摘要 |
A non-handed door operator comprising a motor connected to a mounting plate; at least one gear assembly coupled to the motor and having a driven gear and a driving gear; a gear coupled to the at least one gear assembly; a shaft fixed to the gear and rotatable around an axis in a first rotational direction, the shaft having a first end and an opposing second end; at least one cam positioned on the shaft and having a shell of revolution about the shaft axis; at least one switch intersecting the shell of revolution of the at least one cam; and an arm attachable to the first end and the second end of the shaft. |
