Pneumatic stepper motor actuator

Details Pneumatic stepper motor actuator Pneumatic stepper motor actuator

1991-01-18

1991-10-29

Look, Edward K.

Machine element or mechanism

Gearing

74 8915, 92 2, 92 61, 92 92, F16H 3300

Patent

active

050605399

ABSTRACT:
A pneumatic stepper motor weight actuator captures the advantages of polymeric harmonic gears while occupying less space and eliminating the problems associated with air entrapment in the stator grooves. Air entrapment is eliminated by providing orificed air passages from the bottom of the longitudinal stator grooves to the center stator hole. Advantageously, the actuator includes a rigid gear comprising a toothed polymeric sleeve adhesively bonded inside a metal cup.

REFERENCES:
patent: 3088333 (1963-05-01), Musser
patent: 3523488 (1970-08-01), Robinson
patent: 4425822 (1984-01-01), Marschner et al.
patent: 4479403 (1984-10-01), Marschner et al.
patent: 4719816 (1988-01-01), Carlnas
patent: 4833941 (1989-05-01), Lepranen et al.
Engineering Design with DuPont Plastics.

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