초록 ▼

A clutch for altering the direction of a drive unit of a transportation device between a first direction of travel and a second direction of travel, the drive unit having at least one drive wheel connected to a shaft, the shaft being rotatably mounted with respect to the transportation device betwee

A clutch for altering the direction of a drive unit of a transportation device between a first direction of travel and a second direction of travel, the drive unit having at least one drive wheel connected to a shaft, the shaft being rotatably mounted with respect to the transportation device between at least a first position, corresponding to the first direction of travel, and a second position, corresponding to the second direction of travel, the clutch comprises a housing to receive a portion of the shaft, a lock having a first preset locked position corresponding to the first direction of travel and a second preset locked position corresponding to the second direction of travel and, a connecting member connected to the shaft and the lock for alternately locking the shaft in one of the directions of travel.

대표청구항 ▼

[We claim:] [1.](a) a lock having a first preset locked position corresponding to the first direction of travel and a second preset locked position corresponding to the second direction of travel; and,(b) a connecting member connected to the shaft and drivingly linked to the lock by a linking arm fo

[We claim:] [1.](a) a lock having a first preset locked position corresponding to the first direction of travel and a second preset locked position corresponding to the second direction of travel; and,(b) a connecting member connected to the shaft and drivingly linked to the lock by a linking arm for alternately locking the shaft in one of the directions of travel, the connecting member is configured such that when the lock is in one of the preset positions, the connecting member is at about 90.degree. to the linking arm.