Nutating motor gate valve operator and rotor assembly
AssigneeMorgan Actuators, Inc.
InventorWilliam L. Morgan
Life of this patent
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Abstract
A rotor for a nutating motor has an annular cavity formed in one face thereof, which cavity receives a helically wound ring of magnetically permeable material. A gate valve operator assembly couples the hollow output shaft of a nutating motor to a valve stem, which axially moves within the hollow output shaft. An internally threaded spindle, or stem nut, is rotatably mounted to engage the externally threaded valve stem. The spindle and the hollow motor shaft are coupled together by means of a tab engaging a correspondingly formed notch. Axial movement of the spindle is prevented by means of a flanged radially extending circumferential rim formed as part of the spindle.
Claims7
A valve operator, driven by a nutating motor having a hollow output shaft, comprising:
- said motor being located centrally of said valve operator and having said hollow output shaft rotatable about an axis;
- a linearly movable valve stem coaxially aligned with the hollow output shaft, said valve stem and hollow output shaft adapted to coaxially interfit;
- and
- coupling means between the hollow output shaft and the valve stem for converting the rotary motion of the hollow output shaft to linear motion of the valve stem.
Dependencies are inferred from the claim text.