US3421383A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Multiextend screw mechanism
Assignee: Motors Liquidation Co
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Filing: 1964-06-11
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Granted: 1969-01-14
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Expires: 1984-06-11
Abstract
No abstract record available.
Inventors
- 👤 Lowell F Smith
- 👤 George A Widmoyer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 12:38
CPC Classifications
F; F16; F16H; F16H25/00; F16H25/18; F16H25/20; F16H25/22; F16H25/2204; F16H25/2056; Y; Y10; Y10T; Y10T74/00; Y10T74/18; Y10T74/18568; Y10T74/18576; Y10T74/18672
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
84 words
IN A MULTIEXTENDED SCREW MECHANISM THE COMBINATION OF (A) AN INNER MEMBER, A FIRST INTERMEDIATE MEMBER ENCIRCLING SAID INNER MEMBER, A SECOND INTERMEDIATE MEMBER ENCIRCLING SAID FIRST INTERMEDIATE MEMBER, AN OUTER MEMBER ENCIRCLING SAID SECOND INTERMEDIATE MEMBER, (B) FIRST THREAD MEANS OPERATIVELY THREADABLY CONNECTING SAID FIRST INTERMEDIATE MEMBER AND SAID SECOND INTERMEDIATE MEMBER HAVING A PITCH ANGLE EXTENDING IN ONE DIRECTION, SECOND THREAD MEANS OPERATIVELY THREADABLY CONNECTING SAID SECOND INTERMEDIATE MEMBER AND SAID OTHER MEMBER HAVING A PITCH ANGLE EXTENDING IN THE OPPOSITE DIRECTION,
Claim 2
Dependent Claim
84 words
IN A MULTIEXTENDED SCREW MECHANISM THE COMBINATION OF (A) AN INNER MEMBER, A FIRST INTERMEDIATE MEMBER ENCIRCLING SAID INNER MEMBER, A SECOND INTERMEDIATE MEMBER ENCIRCLING SAID FIRST INTERMEDIATE MEMBER, AN OUTER MEMBER ENCIRCLING SAID SECOND INTERMEDIATE MEMBER, (B) FIRST THREAD MEANS OPERATIVELY THREADABLY CONNECTING SAID FIRST INTERMEDIATE MEMBER AND SAID SECOND INTERMEDIATE MEMBER HAVING A PITCH ANGLE EXTENDING IN ONE DIRECTION, SECOND THREAD MEANS OPERATIVELY THREADABLY CONNECTING SAID SECOND INTERMEDIATE MEMBER AND SAID OTHER MEMBER HAVING A PITCH ANGLE EXTENDING IN THE OPPOSITE DIRECTION,
References Cited (Backward Citations)
US2458272A
Cited
US3154954A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-01-14 | 1972-07-15 | 1973-01-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-01-14 | 1976-07-15 | 1977-01-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-01-14 | 1980-07-15 | 1981-01-14 | $7700.00 | Window Closed / Lapsed |