Patent US3213702A successfully refreshed from Google Patents.
US3213702A
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Jackscrew
Assignee: Unisys Corp
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Filing: 1963-10-15
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Granted: 1965-10-26
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Expires: 1983-10-15
Abstract
No abstract record available.
Inventors
- 👤 Leonard W Deehan
- 👤 Peter E Jacobson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 05:03
CPC Classifications
F; F16; F16H; F16H25/00; F16H25/18; F16H25/20; F16H25/22; F16H25/2204; F16H25/2214; B; B64; B64C; B64C13/00; B64C13/02; B64C13/16; B64C13/18; Y; Y10; Y10T; Y10T74/00; Y10T74/18; Y10T74/18568; Y10T74/18576; Y10T74/18656
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
212 words
A JACKSCREW OF THE BALL BEARING TYPE INCLUDING A FRAME HAVING A BEARING A PART WITH A RECTILINEAR BALL GUIDE, A SCREW WITH A HELICAL BALL GROOVE MOUNTED IN THE BEARING TO TURN ABOUT A LONGITUDINAL AXIS PARALLEL TO THE GUIDE, A JACK ARRANGED BETWEEN THE SCREW AND FRAME TO MOVE ALONG THE AXIS HAVING AXIALLY SPACED BALL PORTS NORMAL TO THE AXIS AND AN EXTERNAL BALL RACE CONNECTING THE PORTS HAVING A LOWER LEVEL PORTION WITH AN END TERMINATING AT ONE OF THE PORTS, AN AXIALLY EXTENDING UPPER LEVEL PORTION WITH AN END TERMINATING AT THE OTHER OF THE PORTS AND A RAMP PORTION BETWEEN THE OTHER ENDS OF THE UPPER AND LOWER PORTIONS OF THE RACE, A TRAIN OF BALL BEARINGS ENCIRCLING THE GROOVE IN THE SCREW BETWEEN THE PORTS AND FILLING THE BALL RACE OF THE JACK WITH THE BALLS ON THE UPPER LEVEL PORTION OF THE RACE ENGAGING THE RECTILINEAR BALL GUIDE ON THE FRAME OPERABLE TO TRAVEL ALONG THE RACE AND THROUGH THE PORTS INTO AND OUT OF THE GROOVE IN THE SCREW, AND REVERSIBLE MEANS FOR TURNING THE SCREW HAVING A PART FIXED TO THE FRAME AND A PART CONNECTED TO THE SCREW TO MOVE THE JACK THROUGH THE TRAVEL OF THE TRAIN OF BALL BEARINGS.
Claim 2
Dependent Claim
212 words
A JACKSCREW OF THE BALL BEARING TYPE INCLUDING A FRAME HAVING A BEARING A PART WITH A RECTILINEAR BALL GUIDE, A SCREW WITH A HELICAL BALL GROOVE MOUNTED IN THE BEARING TO TURN ABOUT A LONGITUDINAL AXIS PARALLEL TO THE GUIDE, A JACK ARRANGED BETWEEN THE SCREW AND FRAME TO MOVE ALONG THE AXIS HAVING AXIALLY SPACED BALL PORTS NORMAL TO THE AXIS AND AN EXTERNAL BALL RACE CONNECTING THE PORTS HAVING A LOWER LEVEL PORTION WITH AN END TERMINATING AT ONE OF THE PORTS, AN AXIALLY EXTENDING UPPER LEVEL PORTION WITH AN END TERMINATING AT THE OTHER OF THE PORTS AND A RAMP PORTION BETWEEN THE OTHER ENDS OF THE UPPER AND LOWER PORTIONS OF THE RACE, A TRAIN OF BALL BEARINGS ENCIRCLING THE GROOVE IN THE SCREW BETWEEN THE PORTS AND FILLING THE BALL RACE OF THE JACK WITH THE BALLS ON THE UPPER LEVEL PORTION OF THE RACE ENGAGING THE RECTILINEAR BALL GUIDE ON THE FRAME OPERABLE TO TRAVEL ALONG THE RACE AND THROUGH THE PORTS INTO AND OUT OF THE GROOVE IN THE SCREW, AND REVERSIBLE MEANS FOR TURNING THE SCREW HAVING A PART FIXED TO THE FRAME AND A PART CONNECTED TO THE SCREW TO MOVE THE JACK THROUGH THE TRAVEL OF THE TRAIN OF BALL BEARINGS.
References Cited (Backward Citations)
US2197155A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-10-25 | 1969-04-26 | 1969-10-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-10-25 | 1973-04-26 | 1973-10-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-10-25 | 1977-04-26 | 1977-10-26 | $7700.00 | Window Closed / Lapsed |