| 摘要 |
A machine for assisting a partially ambulatory user to rise and move about. The wheeled frame comprises a rigid, U-shaped base which supports a pair of upwardly extending sides. The frame sides border an open front in which the user is received. Rigid hand rails associated with the frame sides and a push-handle associated with the frame rear may be grasped by the user for support. A cushioned yoke engages the user's torso to support body weight. The yoke may be interchanged with a custom yoke which conforms to the user's body. The yoke is pivotally coupled to a winch-driven linkage assembly comprising a pair of cooperating levers mounted for movement within the frame interior. The top and bottom levers pivot about pivot points defined by bearings coupled to the frame sides. The levers are of different lengths, and their pivot points are offset, so that the camber of the yoke varies during operation. The linkage assembly is driven by a battery-powered winch. Electrical switches associated with the yoke or the hand rails are conveniently accessed by the user to activate the winch. As the user rises from a seated position, the yoke undergoes camber loss until it reaches an intermediate position of maximum negative camber. Camber gain occurs as the yoke rises to its uppermost position of maximum positive camber. The user is thus comfortably and positively supported.
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