Electromagnetic stepping motor

• US 3,115,589 A
• Filed: 10/23/1961
• Issued: 12/24/1963
• Est. Priority Date: 10/23/1961
• Status: Expired due to Term

• Current Assignee: Stanley O. Bender, Wayne A. Barden
• Original Assignee: Stanley O. Bender, Wayne A. Barden
• Inventors: Bender, Stanley O., Barden, Wayne A.
• Application Number:
  US04/146,747
• Time in Patent Office: 792 Days
• US Class Current: 310/21
• CPC Class Codes: H02K 37/00 Motors with rotor rotating step by step and without interrupter or commutator driven by the rotor, e.g. stepping motors
• CPC Class Codes: Y10T 74/1555 Rotary driven element
• CPC Class Codes: Y10T 74/1582 Single ratchet or clutch
• CPC Class Codes: Y10T 74/2133 Pawls and ratchets

Claims

1. AN ELECTROMAGNETIC STEPPER FOR ADJUSTING A ROTATABLY ADJUSTABLE CONTROL COMPRISING:

TWO ELECTROMAGNETS;

A PIVOTALLY MOUNTED ARMATURE ASSOCIATED WITH EACH ELECTROMAGNET;

STOP MEANS ARRANGED TO LIMIT THE DISTANCE EACH ARMATURE CAN PIVOT AWAY FROM ITS ASSOCIATED ELECTROMAGNET;

FIRST RESILIENT MEANS BIASING EACH ARMATURE TOWARD THE STOP MEANS SO THAT EACH ARMATURE CAN BE CAUSED TO OSCILLATE BETWEEN THE STOP MEANS AND ITS ASSOCIATED ELECTROMAGNET BY ALTERNATELY ENERGIZING AND DE-ENERGIZING THE ELECTROMAGNET;

AN ADJUSTING MEMBER FOR THE CONTROL;

A CIRCULAR MEMBER EQUIPPED WITH TEETH ATTACHED TO THE ADJUSTING MEMBER;

AND TOOTH ENGAGING MEANS CARRIED BY EACH ARMATURE SO THAT BY ENERGIZING ONE ELECTROMAGNET AND THEREBY CAUSING ITS ASSOCIATED ARMATURE TO PIVOT AWAY FROM THE STOP MEANS, THE TOOTH ENGAGING MEANS CARRIED BY THE ARMATURE WILL ENGAGE THE TEETH ON THE CIRCULAR MEMBER CAUSING IT TO ROTATE AN INCREMENTAL DISTANCE BEFORE THE ARMATURE REACHES THE END OF ITS TRAVEL TOWARD THE ELECTROMAGNET;

SAID STEPPER BEING FURTHER CHARACTERIZED BY THE FACT THAT THE ARMATURES ARE ARRANGED ON OPPOSITE SIDES OF THE CIRCULAR MEMBER SO THAT EACH ARMATURE ROTATES THE CIRCULAR MEMBER IN OPPOSITE DIRECTIONS.