US3243161A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for elevating rigid loads
Assignee: Individual
•
Filing: 1963-10-04
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Granted: 1966-03-29
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Expires: 1983-10-04
Abstract
No abstract record available.
Inventors
- 👤 Howard C R Green
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 09:00
CPC Classifications
B; B66; B66F; B66F7/00; B66F7/06; B66F7/0691; B60; B60P; B60P1/00; B60P1/64; B60P1/6418; B60P1/6427; B60P3/00; B60P3/32; B66F7/0633; B66F7/08
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
251 words
A DEVICE FOR ELEVATING AND LOWERING RIGID LOADS RELATIVE TO THE GROUND COMPRISING: A PAIR OF JACK ASSEMBLIES FOR ENGAGING THE RIGID LOAD AT SPACED LOCATIONS, EACH JACK ASSEMBLY HAVING A PAIR OF SUBSTANTIALLY PARALLEL AND VERTICALLY SPACED ELONGATED MEMBERS FOR ENGAGING THE UNDERSIDE OF THE RIGID LOAD AND THE GROUND, RESPECTIVELY, A PAIR LONGITUDINALLY MOVABLE AND SLIDABLY INTERENGAGING MEMBERS POSITIONED BETWEEN AND SUBSTANTIALLY PARALLEL TO SAID PAIR OF ELONGATED MEMBERS OF EACH ASSEMBLY, OPERABLY MEANS ON EACH JACK ASSEMBLY FOR CAUSING LONGITUDINAL TELESCOPING MOVEMENT BETWEEN SAID PAIR OF INTERENGAGING MEMBERS, MEANS ON EACH JACK ASSEMBLY CONNECTING SAID INTERENGAGING MEMBERS TO SAID ELONGATED MEMBERS FOR CAUSING RELATIVE VERTICAL MOVEMENT BETWEEN SAID ELONGATED MEMBERS UPON RELATIVE LONGITUDINAL MOVEMENT BETWEEN SAID INTERENGAGING MEMBERS AND FOR STRUCTURALLY CONFINING SAID ELONGATED MEMBERS AND SAID INTERENGAGING MEMBERS IN PARALLEL RELATION TO EACH OTHER UPON SUCH MOVEMENT FOR RAISING AND LOWERING THE RIGID LOAD, AND A LATERAL SUPPORTING MEANS ON EACH SAID JACK ASSEMBLY INCLUDING AN ELONGATED ARM HAVING ONE END PIVOTALLY CONNECTED TO SAID UPPER ELONGATED MEMBER FOR PIVOTAL MOVEMENT ABOUT AN AXIS PARALLEL TO THE LENGTH OF SAID ELONGATED MEMBER AND THE OTHER END ADAPTED TO ENGAGE THE GROUND, A CONNECTING ARM OF APPROXIMATELY HALF THE LENGTH OF SAID ELONGATED ARM PITOVALLY CONNECTED TO APPROXIMATELY THE MID-POINT OF SAID ELONGATED ARM AND TO SAID LOWER ELONGATED MEMBER, WHEREBY THE SAID OTHER END OF SAID ELONGATED ARM CONTINUALLY ENGAGES THE GROUND FOR LATERAL SUPPORT AS THE SAID ELONGATED MEMBERS MOVE TOWARD AND AWAY FROM EACH OTHER.
Claim 2
Independent Claim
251 words
A DEVICE FOR ELEVATING AND LOWERING RIGID LOADS RELATIVE TO THE GROUND COMPRISING: A PAIR OF JACK ASSEMBLIES FOR ENGAGING THE RIGID LOAD AT SPACED LOCATIONS, EACH JACK ASSEMBLY HAVING A PAIR OF SUBSTANTIALLY PARALLEL AND VERTICALLY SPACED ELONGATED MEMBERS FOR ENGAGING THE UNDERSIDE OF THE RIGID LOAD AND THE GROUND, RESPECTIVELY, A PAIR LONGITUDINALLY MOVABLE AND SLIDABLY INTERENGAGING MEMBERS POSITIONED BETWEEN AND SUBSTANTIALLY PARALLEL TO SAID PAIR OF ELONGATED MEMBERS OF EACH ASSEMBLY, OPERABLY MEANS ON EACH JACK ASSEMBLY FOR CAUSING LONGITUDINAL TELESCOPING MOVEMENT BETWEEN SAID PAIR OF INTERENGAGING MEMBERS, MEANS ON EACH JACK ASSEMBLY CONNECTING SAID INTERENGAGING MEMBERS TO SAID ELONGATED MEMBERS FOR CAUSING RELATIVE VERTICAL MOVEMENT BETWEEN SAID ELONGATED MEMBERS UPON RELATIVE LONGITUDINAL MOVEMENT BETWEEN SAID INTERENGAGING MEMBERS AND FOR STRUCTURALLY CONFINING SAID ELONGATED MEMBERS AND SAID INTERENGAGING MEMBERS IN PARALLEL RELATION TO EACH OTHER UPON SUCH MOVEMENT FOR RAISING AND LOWERING THE RIGID LOAD, AND A LATERAL SUPPORTING MEANS ON EACH SAID JACK ASSEMBLY INCLUDING AN ELONGATED ARM HAVING ONE END PIVOTALLY CONNECTED TO SAID UPPER ELONGATED MEMBER FOR PIVOTAL MOVEMENT ABOUT AN AXIS PARALLEL TO THE LENGTH OF SAID ELONGATED MEMBER AND THE OTHER END ADAPTED TO ENGAGE THE GROUND, A CONNECTING ARM OF APPROXIMATELY HALF THE LENGTH OF SAID ELONGATED ARM PITOVALLY CONNECTED TO APPROXIMATELY THE MID-POINT OF SAID ELONGATED ARM AND TO SAID LOWER ELONGATED MEMBER, WHEREBY THE SAID OTHER END OF SAID ELONGATED ARM CONTINUALLY ENGAGES THE GROUND FOR LATERAL SUPPORT AS THE SAID ELONGATED MEMBERS MOVE TOWARD AND AWAY FROM EACH OTHER.
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) | 1969-03-28 | 1969-09-27 | 1970-03-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-03-28 | 1973-09-27 | 1974-03-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-03-28 | 1977-09-27 | 1978-03-29 | $7700.00 | Window Closed / Lapsed |