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US 4,697,476 AGranted
Planetary worm gear apparatus, and methods of constructing and utilizing same
OwnerRichard L. Maxwellinventor
Life of this patent
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Abstract
A gear assembly having a primary worm; a planetary worm/gear engaging said primary worm; and a split ring, internal double enveloping worm gear surrounding and engaging said planetary worm/gear. The planetary worm/gear is attached to a planetary carrier on a planetary support shaft which allows the planetary worm/gear to rotate thereon. Primary worm input is utilized. Output may be taken from the planetary carrier or the split ring, internal, double enveloping worm gear.
Claims6
A gear assembly comprising, in combination:
- a gear assembly housing;
- an input shaft for said housing;
- a gear assembly in said housing;
- said gear assembly including an input worm fixedly attached to said input shaft;
- a planetary carrier having a barrel shaped planetary worm/gear enveloping said input worm;
- and
- a double enveloping internal worm gear enveloping said planetary worm/gear;
- wherein said barrel shaped planetary worm/gear includes a first end;
- an opposing second end;
- a concave mid-section intermediate said first end and said second end;
- a first surface intermediate said first end and said mid-section;
- a second surface intermediate said second end and said concave mid-section;
- said first and said second surface each having worm threads thereon for engaging said split ring, internal, double enveloping worm gear;
- and
- said concave mid-section having gear teeth thereon about the circumference of said planetary worm/gear at its mid section for engaging said input worm.
12 more elements
Dependencies are inferred from the claim text.