Automatic door operator with compound epicyclic gear drive syste

Details Automatic door operator with compound epicyclic gear drive syste Automatic door operator with compound epicyclic gear drive syste

1992-01-21

1993-06-22

Bonck, Rodney H.

Planetary gear transmission systems or components

Planetary gearing or element

Coaxial teeth around planet pinion engage axially spaced...

49334, F16H 128, E05F 1512

Patent

active

052212394

ABSTRACT:
Door operator for commercial and domestic use with swing-mounted doors are disclosed. Each operator employs a variable-speed d.c. motor as prime mover, and a vertically oriented door-driving operator output shaft journalled in a transmission having a compact transmission housing which includes shock mounts for mounting of the transmission housing and operator within structure associated with the door. The transmission provides speed reduction coupling of the motor drive shaft to the operator output shaft with substantially right-angled relationship between their axes of rotation. The transmission includes a drive gear, to which the motor drive shaft is coupled by miter gear arrangement of different types, with the drive gear in coaxial relation with the operator output shaft but independently rotatable about it. Epicyclic sun-and-planet gear drive mechanism of specialized design is coaxial with the operator shaft and includes planet gears driven for epicyclic movement about the axis of the operator output shaft, providing speed reduction coupling of the drive gear to the output shaft. Different possible spring arrangements, including rack-gear operated spring modules of interchangeable character, are used for resiliently coupling restorative force to the operator output shaft upon rotation thereof in at least one direction.

REFERENCES:
patent: 1799740 (1931-04-01), Felton
patent: 3422704 (1969-01-01), Catlett
patent: 3457674 (1969-07-01), Catlett et al.
patent: 4045914 (1977-09-01), Catlett
patent: 4116293 (1978-09-01), Fukui
patent: 4220051 (1980-09-01), Catlett
patent: 4333270 (1982-06-01), Catlett
patent: 4366727 (1983-01-01), Jonsson
patent: 4599824 (1986-07-01), Mitsuhashi et al.

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