Prosthetic arm powered by an ultrasonic motor
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Jul 23, 2002
Issued Date -
N/A
app pub date -
Oct 17, 2000
filing date -
May 22, 2000
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A movable prosthetic limb includes a drive linkage which is configured to move the prosthetic limb. An ultrasonic drive motor is coupled to the drive linkage and powers the drive linkage. The ultrasonic motor is non-backdrivable and has high torque at low speeds. Specifically, a prosthetic limb uses an ultrasonic motor to drive an elbow joint or prosthetic fingers. A movable prosthetic wrist includes a base configured to be coupled to an amputee. An ultrasonic drive motor is attached to the base, and a hand piece is attached to the ultrasonic drive motor to form a wrist joint. In this configuration, the ultrasonic drive motor directly moves the wrist joint. A harmonic drive can also be used for gear reduction in the wrist joint.
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