US3208789A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Self-aligning lifting device
Assignee: Individual
•
Filing: 1962-12-27
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Granted: 1965-09-28
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Expires: 1982-12-27
Abstract
No abstract record available.
Inventors
- 👤 Leonard D Barry
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 18:07
CPC Classifications
B; B66; B66C; B66C1/00; B66C1/10; B66C1/62; B66C1/64
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
212 words
A GRAB COMPRISING IN COMBINATION: A PLURALITY OF GRAP LEVERS, MEANS PIVOTALLY SECURING SAID LEVERS TO SWING IN PARALLEL PLANES TO SUPPORT A LOAD THEREBETWEEN, LINKAGE MEANS FOR LIFTING SAID LEVERS AND FOR FORCING SAID LEVERS TO ENGAGE UPON THE LIFTING OF SAID LINKAGE, LOCATOR MEANS FOR ALIGNING SAID GRAB ON THE LOAD, MEANS FOR SUPPORTING SAID LOCATOR MEANS ON SAID GRAB IN HORIZONTAL ALIGNMENT THEREWITH AND SO SAID LOCATOR CAN VERTICALLY MOVE FROM A POINT BELOW TO A POINT ABOVE THE BOTTOM OF SAID GRAB LEVERS AS THE WEIGHT OF THE GRAB IS RESTED ON THE LOAD, SAID LEVERS CAMMING OPEN WHEN RESTED ON THE LOAD, LATCH MEANS FOR HOLDING SAID GRAB LEVERS WIDE OPEN AFTER THE WEIGHT OF THE GRAB IS RESTED ON THE LOAD, AND MEANS FOR ACTUATING SAID LATCH MEANS TO RELEASE SAID LEVERS AS SAID LOCATOR EXTEND BELOW THE GRAB LEVERS AS THE OPEN GRAB IS LIFTED FROM THE LOAD, CAM MEANS CONTROLLED BY SAID LOCATOR FOR HOLDING SAID GRAP LEVERS OPEN WHEN RELEASED BY SAID LATCHING MEANS TO HOLD THE LEVERS OPEN TO RECEIVE A LOAD WHEN SAID LOCATOR IS EXTENDED, SAID CAM MEANS BEING DESIGNED TO RELEASE SAID LEVERS TO ENGAGE THE LOAD AS THE LOCATOR IS PUSHED IN TO ENGAGING POSITION OF THE LOAD.
Claim 2
Dependent Claim
212 words
A GRAB COMPRISING IN COMBINATION: A PLURALITY OF GRAP LEVERS, MEANS PIVOTALLY SECURING SAID LEVERS TO SWING IN PARALLEL PLANES TO SUPPORT A LOAD THEREBETWEEN, LINKAGE MEANS FOR LIFTING SAID LEVERS AND FOR FORCING SAID LEVERS TO ENGAGE UPON THE LIFTING OF SAID LINKAGE, LOCATOR MEANS FOR ALIGNING SAID GRAB ON THE LOAD, MEANS FOR SUPPORTING SAID LOCATOR MEANS ON SAID GRAB IN HORIZONTAL ALIGNMENT THEREWITH AND SO SAID LOCATOR CAN VERTICALLY MOVE FROM A POINT BELOW TO A POINT ABOVE THE BOTTOM OF SAID GRAB LEVERS AS THE WEIGHT OF THE GRAB IS RESTED ON THE LOAD, SAID LEVERS CAMMING OPEN WHEN RESTED ON THE LOAD, LATCH MEANS FOR HOLDING SAID GRAB LEVERS WIDE OPEN AFTER THE WEIGHT OF THE GRAB IS RESTED ON THE LOAD, AND MEANS FOR ACTUATING SAID LATCH MEANS TO RELEASE SAID LEVERS AS SAID LOCATOR EXTEND BELOW THE GRAB LEVERS AS THE OPEN GRAB IS LIFTED FROM THE LOAD, CAM MEANS CONTROLLED BY SAID LOCATOR FOR HOLDING SAID GRAP LEVERS OPEN WHEN RELEASED BY SAID LATCHING MEANS TO HOLD THE LEVERS OPEN TO RECEIVE A LOAD WHEN SAID LOCATOR IS EXTENDED, SAID CAM MEANS BEING DESIGNED TO RELEASE SAID LEVERS TO ENGAGE THE LOAD AS THE LOCATOR IS PUSHED IN TO ENGAGING POSITION OF THE LOAD.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-09-27 | 1969-03-29 | 1969-09-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-09-27 | 1973-03-29 | 1973-09-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-09-27 | 1977-03-29 | 1977-09-28 | $7700.00 | Window Closed / Lapsed |