Harmonic drive driven by a pneumatic stepper motor

Details Harmonic drive driven by a pneumatic stepper motor Harmonic drive driven by a pneumatic stepper motor

F - Mech Eng,Light,Heat,Weapons

16

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F16H 49/00 (2006.01) F16H 7/00 (2006.01) F16H 19/06 (2006.01) F16H 57/00 (2006.01) F16H 57/08 (2006.01)

Patent

CA 2100772

A pneumatic stepper motor weight actuator (7) captures the advantages of polymeric harmonic gears while occupying less space and eliminating the problems associated with air entrapment in the stator grooves (31, 49). Air entrapment is eliminated by providing orificed air passages (47) from the bottom of the longitudinal stator grooves (31) to the center stator hole (45). Advanta- geously, the actuator (7) includes a rigid gear (23) comprising a toothed polymeric sleeve (61) adhesively bonded inside a metal cup (63).

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