Patent ID: 6178575
Filing Date: 2001-01-30
Classification: A61G

Abstract:
A stretcher mounting unit comprising:a unit body detachably mounted on a stretcher;drive means attached to said unit body for providing an output;operating means detachably mounted on the stretcher for operating said drive means;a center shaft for receiving the output of said drive means;a coupling that couples said drive means and said center shaft for transmitting the output of said drive means to said center shaft;a roller pressed on said center shaft to produce torque;a carrier swingably disposed on said center shaft;a pair of wheels rotatably mounted on said carrier and rotated by the torque of said roller; anda friction clutch rotatably provided on said center shaft and associated with said carrier for swinging said carrier until one of said pair of wheels touches the ground;whereby the output of said drive means, upon said one wheel touching the ground, is transmitted to said one wheel to idly rotate said friction clutch relative to said center shaft and enable the stretcher to attain a self-advancing travel.