US3402613A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Differential screw with variable adjustments
Assignee: Northrop Grumman Space and Mission Systems Corp
•
Filing: 1966-08-01
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Granted: 1968-09-24
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Expires: 1986-08-01
Abstract
No abstract record available.
Inventors
- 👤 Robert H Neusel
- 👤 Gordon J Hunt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 17:44
CPC Classifications
G; G05; G05G; G05G23/00; G05G2700/00; G05G2700/02; Y; Y10; Y10T; Y10T74/00; Y10T74/18; Y10T74/18568; Y10T74/18576; Y10T74/18672; Y10T74/18752
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
142 words
A DIFFERENTIAL SCREW WITH VARIABLE ADJSUTMENTS WHICH COMPRISES; A FIRST LONGITUDINAL MEMBER, SAID MEMBER HAVING THREADS ON THE EXTERIOR THEREOF AND A LONGITUDINAL BORE THERETHROUGH, SAID BORE BEING THREADED ON A PORTION THEREOF WHEREBY TO RECEIVE AN EXTERIORLY THREADED MEMBER, A SECOND LONGITUDINAL MEMBER, SAID SECOND MEMBER HAVING A FIRST PORTION WITH EXTERIOR THREADS THEREON RECEIVED BY THE THREADED BORE OF SAID FIRST MEMBER, SAID SECOND MEMBER HAVING A SECOND PORTION WITH EXTERIOR THREADS THEREON, SAID THREADS HAVING A PITCH DIFFERENT FROM THAT OF THE THREADS ON SAID FIRST PORTION, A THIRD LONGITUDINAL MEMBER HAVING INTERIOR THREADS THEREON CORRESPONDING TO THE THREADS ON SAID SECOND PORTION OF SAID SECOND MEMBER AND SLIDABLE AXIALLY WITHIN SAID FIRST MEMBER WHEN SAID SECOND MEMBER IS ROTATED RELATIVE TO SAID FIRST MEMBER, AND MEANS TO PREVENT ROTATION OF SAID THIRD MEMBER RELATIVE TO SAID FIRST MEMBER,
Claim 2
Dependent Claim
142 words
A DIFFERENTIAL SCREW WITH VARIABLE ADJSUTMENTS WHICH COMPRISES; A FIRST LONGITUDINAL MEMBER, SAID MEMBER HAVING THREADS ON THE EXTERIOR THEREOF AND A LONGITUDINAL BORE THERETHROUGH, SAID BORE BEING THREADED ON A PORTION THEREOF WHEREBY TO RECEIVE AN EXTERIORLY THREADED MEMBER, A SECOND LONGITUDINAL MEMBER, SAID SECOND MEMBER HAVING A FIRST PORTION WITH EXTERIOR THREADS THEREON RECEIVED BY THE THREADED BORE OF SAID FIRST MEMBER, SAID SECOND MEMBER HAVING A SECOND PORTION WITH EXTERIOR THREADS THEREON, SAID THREADS HAVING A PITCH DIFFERENT FROM THAT OF THE THREADS ON SAID FIRST PORTION, A THIRD LONGITUDINAL MEMBER HAVING INTERIOR THREADS THEREON CORRESPONDING TO THE THREADS ON SAID SECOND PORTION OF SAID SECOND MEMBER AND SLIDABLE AXIALLY WITHIN SAID FIRST MEMBER WHEN SAID SECOND MEMBER IS ROTATED RELATIVE TO SAID FIRST MEMBER, AND MEANS TO PREVENT ROTATION OF SAID THIRD MEMBER RELATIVE TO SAID FIRST MEMBER,
References Cited (Backward Citations)
US3204471A
Cited
US3281944A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-09-24 | 1972-03-25 | 1972-09-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-09-24 | 1976-03-25 | 1976-09-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-09-24 | 1980-03-25 | 1980-09-24 | $7700.00 | Window Closed / Lapsed |