US3330171A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Bearingless roller gear drive
Assignee: Northrop Grumman Space and Mission Systems Corp
•
Filing: 1964-05-19
•
Granted: 1967-07-11
•
Expires: 1984-05-19
Abstract
No abstract record available.
Inventors
- 👤 Algirdas L Nasvytis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 11:04
CPC Classifications
F; F16; F16H; F16H1/00; F16H1/28; F16H1/36; F16H57/00; F16H57/02; F16H57/02004; Y; Y10; Y10S; Y10S475/00; Y10S475/904
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
102 words
IN COMBINATION IN A PLANETARY GEAR SYSTEM, A SUN GEAR, A PLURALITY OF FREE FLOATING PLANETS ROTATABLY MOUNTED IN GEAR DRIVE INTERCONNECTION WITH SAID SUN GEAR, A RING GEAR IN GEAR DRIVE CONTACT WITH SAID PLANETS AT POINTS OF CONTACT AXIALLY SPACED FROM THE POINT OF GEAR DRIVE INTERCONNECTION, AND A PAIR OF ANNULAR FREE-WHEELING SUPPORT RINGS IN FRICTION DRIVE RELATION WITH THE RADIALLY OUTWARDLY FACING SURFACES OF SAID PLANETS FOR MAINTAINING SAID PLANETS IN SAID DRIVE INTERCONNECTION WITH SAID SUN GEAR, SAID ANNULAR SUPPORT RINGS BEING AXIALLY SPACED FROM EACH OTHER TO AXIALLY BALANCE THE DRIVE INTERCONNECTION WITH SAID SUN GEAR.
Claim 2
Dependent Claim
102 words
IN COMBINATION IN A PLANETARY GEAR SYSTEM, A SUN GEAR, A PLURALITY OF FREE FLOATING PLANETS ROTATABLY MOUNTED IN GEAR DRIVE INTERCONNECTION WITH SAID SUN GEAR, A RING GEAR IN GEAR DRIVE CONTACT WITH SAID PLANETS AT POINTS OF CONTACT AXIALLY SPACED FROM THE POINT OF GEAR DRIVE INTERCONNECTION, AND A PAIR OF ANNULAR FREE-WHEELING SUPPORT RINGS IN FRICTION DRIVE RELATION WITH THE RADIALLY OUTWARDLY FACING SURFACES OF SAID PLANETS FOR MAINTAINING SAID PLANETS IN SAID DRIVE INTERCONNECTION WITH SAID SUN GEAR, SAID ANNULAR SUPPORT RINGS BEING AXIALLY SPACED FROM EACH OTHER TO AXIALLY BALANCE THE DRIVE INTERCONNECTION WITH SAID SUN GEAR.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-07-10 | 1971-01-09 | 1971-07-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-07-10 | 1975-01-09 | 1975-07-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-07-10 | 1979-01-09 | 1979-07-11 | $7700.00 | Window Closed / Lapsed |