Patent US3170244A successfully refreshed from Google Patents.
US3170244A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Device for ensuring constant step length in step-by-step hoisting mechanisms
Assignee: Individual
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Filing: 1962-04-03
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Granted: 1965-02-23
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Expires: 1982-04-03
Abstract
No abstract record available.
Inventors
- 👤 Johansson Rolf Gustaf
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 10:13
CPC Classifications
E; E04; E04G; E04G11/00; E04G11/06; E04G11/20; E04G11/22; E04G11/24
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
201 words
A DEVICE FOR CONTROLLING THE LIFTING MOVEMENT OF A HOISTING MECHANISM ADAPTED TO CLIMB STEPWISE ALONG A CLIMBING ROD AND FOR ENSURING A PREDETERMINED LIFT LENGTH OF SAID HOISTING MECHANISM, SAID DEVICE COMPRISING A RING DISPLACEABLE ALONG SAID ADAPTED TO BE LOCATED IN SELECTED POSITIONS ON SAID CLIMBING ROD AND HAVING ABUTMENT FACES ON ITS UNDERSIDE AND UPPER SIDE, AND A BRACKET HAVING TWO SIDE MEMBERS AND UPPER AND LOWER EDGE MEMBERS AND PROVIDED WITH AN INTERIOR ABUTMENT FACE AT ITS UPPER EDGE, AN INTERIOR ABUTMENT FACE AT ITS LOWER EDGE, AND AN EXTERIOR ABUTMENT FACE AT ITS LOWER EDGE, SAID BRACKET BEING DISPLACEABLE ALONG SAID CLIMBING ROD BETWEEN A POSITION IN WHICH IT ABUTS WITH ITS UPPER INTERIOR ABUTMENT FACE AGAINST THE UPPER ABUTMENT FACE OF SAID RING TO THUS PREVENT THE RING FROM BEING MOVED UP, AND A POSITION IN WHICH SAID BRACKET ITSELF IS PREVENTED FROM BEING MOVED UP BY ABUTMENT WITH ITS LOWER INTERIOR ABUTMENT FACE AGAINST THE UNDERSIDE ABUTMENT FACE OF SAID RING AND IN WHICH IT IS ADAPTED TO BE LOCKED, TO THUS PREVENT FURTHER ADVANCE TO THE UPWARDLY CLIMBING HOISTING MECHANISM UPON ABUTMENT OF SAID MECHANISM AGAINST THE EXTERIOR ABUTMENT FACE OF SAID BRACKET.
Claim 2
Independent Claim
201 words
A DEVICE FOR CONTROLLING THE LIFTING MOVEMENT OF A HOISTING MECHANISM ADAPTED TO CLIMB STEPWISE ALONG A CLIMBING ROD AND FOR ENSURING A PREDETERMINED LIFT LENGTH OF SAID HOISTING MECHANISM, SAID DEVICE COMPRISING A RING DISPLACEABLE ALONG SAID ADAPTED TO BE LOCATED IN SELECTED POSITIONS ON SAID CLIMBING ROD AND HAVING ABUTMENT FACES ON ITS UNDERSIDE AND UPPER SIDE, AND A BRACKET HAVING TWO SIDE MEMBERS AND UPPER AND LOWER EDGE MEMBERS AND PROVIDED WITH AN INTERIOR ABUTMENT FACE AT ITS UPPER EDGE, AN INTERIOR ABUTMENT FACE AT ITS LOWER EDGE, AND AN EXTERIOR ABUTMENT FACE AT ITS LOWER EDGE, SAID BRACKET BEING DISPLACEABLE ALONG SAID CLIMBING ROD BETWEEN A POSITION IN WHICH IT ABUTS WITH ITS UPPER INTERIOR ABUTMENT FACE AGAINST THE UPPER ABUTMENT FACE OF SAID RING TO THUS PREVENT THE RING FROM BEING MOVED UP, AND A POSITION IN WHICH SAID BRACKET ITSELF IS PREVENTED FROM BEING MOVED UP BY ABUTMENT WITH ITS LOWER INTERIOR ABUTMENT FACE AGAINST THE UNDERSIDE ABUTMENT FACE OF SAID RING AND IN WHICH IT IS ADAPTED TO BE LOCKED, TO THUS PREVENT FURTHER ADVANCE TO THE UPWARDLY CLIMBING HOISTING MECHANISM UPON ABUTMENT OF SAID MECHANISM AGAINST THE EXTERIOR ABUTMENT FACE OF SAID BRACKET.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-02-23 | 1968-08-24 | 1969-02-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-02-23 | 1972-08-24 | 1973-02-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-02-23 | 1976-08-24 | 1977-02-23 | $7700.00 | Window Closed / Lapsed |