Electric stepper motor having a cylindrical magnetic rotor with a pair of cups made of magnetic material
US6002186A · kind A · utility
33Cited by
13References
5Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 13, 1998 |
| Grant date | Dec 14, 1999 |
| Priority date | — |
| Expiry date | Jul 13, 2018 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T29/49012
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
An electric stepper motor includes a thru-hole, a rotor and a stator. The rotor consists of a pair of hollow magnetic metal flange-shaped laminations arranged within a hollow magnetic sleeve. The motor can be field-converted from rotary to lineal translation by attachment of a threaded nut to the motor shaft mounting face. The thru-hole allows use with a chamber and provides transport of hardware and elements into the chamber.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.