Resources Contact Us Home
Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
Stepper motor










Image Number 5 for United States Patent #5448117.

A stepper motor includes a stator with magnetic poles extending radially outward from a central core to form segments of an outer stator surface, an armature ring fitting loosely over the stator, and a rotor with a drive plate rotationally driven by rollers extending from the armature ring into apertures in the drive plate. Current is supplied, according to a sequence, through coils surrounding each magnetic pole, so that the armature ring, being sequentially attracted to adjacent magnetic poles, moves around the stator with a modified orbital motion including an orbital motion, in which the ring is translated around a circular path, and a rotational motion. The stepper motor may also include a stationary cam plate with a number of peripheral notches, into which the rollers are moved individually by the orbital motion.








 
 
  Recently Added Patents
Simplifying lexicon creation in hybrid duplicate detection and inductive classifier systems
Cylindrical LED fixture
Data processing method
Methods and devices for coding and decoding images, computer program implementing them and information carrier enabling their implementation
Pallet
Mobile tablet information handling system support
Input device with photodetector pairs
  Randomly Featured Patents
Electronic survey target
Method of fabricating a sub-lithographic sized via
Connector assembly for electric vehicle charging
Laundry spreader
Data sequence display system and time-compression system therefor
Antiperspirant compositions containing film-forming polymers
Method for reducing size of semiconductor unit in packaging process
Optical communication device
Keyboard
Method and apparatus for deskewing data transmissions