Browse Prior Art Database

Twin Stepper Motors

IP.com Disclosure Number: IPCOM000078954D
Original Publication Date: 1973-Apr-01
Included in the Prior Art Database: 2005-Feb-26
Document File: 2 page(s) / 48K

Publishing Venue

IBM

Related People

Chai, HD: AUTHOR [+2]

Abstract

A stepper motor comprises, as shown in Figs. 1a and 1b, separate units A and B, each having a stator 10 with phase windings and rotor 12 mounted on a common shaft 14. The rotors are mounted in a 1/2 tooth out of phase relation. Clockwise rotation is obtained by using a pulsing sequence phi 3, phi 2, phi 4 and phi 1 of the phase windings.

This text was extracted from a PDF file.
At least one non-text object (such as an image or picture) has been suppressed.
This is the abbreviated version, containing approximately 100% of the total text.

Page 1 of 2

Twin Stepper Motors

A stepper motor comprises, as shown in Figs. 1a and 1b, separate units A and B, each having a stator 10 with phase windings and rotor 12 mounted on a common shaft 14. The rotors are mounted in a 1/2 tooth out of phase relation. Clockwise rotation is obtained by using a pulsing sequence phi 3, phi 2, phi 4 and phi 1 of the phase windings.

Such an arrangement permits smaller diameters for the same torgue.

The A and B units may be integral, as shown in Fig. 2, and connected through gears 16 to drive a tractor belt 18 for feeding a continuous form. They may be connected by a platen driven by the shaft 14 as shown in Fig. 3, or they may be separate, as shown in Fig. 4, and connected by the tractor belt 18.

1

Page 2 of 2

2

[This page contains 3 pictures or other non-text objects]