Cam release system for jackshaft conversion from a ceiling garage door opener

A garage door operator (GDO) system comprising:

• a sectional door movable on rails between an open position and a closed position;
• a GDO motor operable to provide power for movement of the sectional door between the open and closed positions via turning of a drive tube in a jackshaft configuration or via movement of a trolley in a ceiling mounted configuration;
• and
• a transmission assembly for enabling conversion from the ceiling mounted configuration to the jackshaft configuration, the transmission assembly comprising:
• an output coupler for operably coupling a drive tube rotatable to alternately open and close a sectional door;
• a pinion assembly operably coupled to the output coupler via a flexible coupling member;
• a releasable coupling assembly operably coupled to a motor output shaft of the GDO motor, the releasable coupling assembly having an engaged state in which rotation of the motor output shaft is transferred to the pinion assembly and a disengaged state in which the rotation of the motor output shaft is not transferred to the pinion assembly;
• a handle;
• and
• a cam operated engagement assembly operably coupled to the handle and the releasable coupling assembly to transition the releasable coupling assembly between the engaged state and the disengaged state based on a position of the handle, wherein the transmission assembly further comprises a first cover member,
• wherein the handle engages the engagement assembly through the first cover member,
• wherein the first cover member comprises a ramped surface facing a cam base of the engagement assembly, and
• wherein the cam base comprises a sloped surface that slides along the ramped surface responsive to rotation of the handle to provide camming action to translate the cam base along an axis of the motor output shaft toward the pinion assembly to transition the releasable coupling assembly to the disengaged state.