US3213575A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cranes
Assignee: Individual
•
Filing: 1962-09-13
•
Granted: 1965-10-26
•
Expires: 1982-09-13
Abstract
No abstract record available.
Inventors
- 👤 Boczek Walter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 12:28
CPC Classifications
E; E04; E04G; E04G21/00; E04G21/14; E04G21/16; B; B66; B66C; B66C23/00; B66C23/18; B66C23/26; B66C23/28; B66C23/283; E04H; E04H12/00; E04H12/34
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
212 words
A CRANE OF THE TYPE WHICH IS ERECTABLE IN SITU, COMPRISING A VERTICAL PILLAR AND A HEAD UNIT SUPPORTED AT THE TOP END OF SAID PILLAR, SAID PILLAR COMPRISING A PLURALITY OF SEPARATE SECTIONS WHICH ARE JOINABLE WITH EACH OTHER END TO END TO FORM SAID VERTICAL PILLAR, A FRAME FIXEDLY ATTACHABLE SUCCESSIVELY TO EACH ONE OF SAID SECTIONS, SAID HEAD UNIT COMPRISING A CAGE, WHICH COMPRISES SIDE PORTIONS EXTENDING DOWNWARDLY AND ABOUT THE UPPER END PORTION OF SAID PILLAR, LIFTING MEANS ASSOCIATED WITH SAID FRAME AND SAID CAGE WHEREBY ACTUATION OF SAID LIFTING MEANS WHEN SAID FRAME IS FIXEDLY ATTACHED TO A ONE OF SAID SECTIONS CAUSES SAID CAGE TO MOVE VERTICALLY RELATIVE TO SAID PILLAR AND TO SAID FRAME, LOCKING MEANS FOR LOCKING SAID CAGE RELATIVE TO SAID PILLAR, SAID FRAME BEING RELEASABLE FROM ITS FIXED ATTACHMENT WITH SAID PILLAR AND BEING MOVABLE VERTICALLY RELATIVE TO SAID PILLAR AND TO SAID CAGE A DISTANCE SLIGHTLYIN EXCESS OF THE VERTICAL HEIGHT OF ANY ONE OF SAID PILLAR SECTIONS WHEN SAID CAGE IS LOCKED RELATIVE TO SAID PILLAR WHEREBY AN ADDITIONAL ONE OF SAID PILLAR SECTIONS CAN BE ATTACHED ATOP SAID PILLAR BELOW SAID FRAME AND TO THE PRECEDING TOPMOST SECTION IN SAID PILLAR, AND DRIVE MEANS FOR ACTUATING SAID LIFTING MEANS.
Claim 2
Dependent Claim
212 words
A CRANE OF THE TYPE WHICH IS ERECTABLE IN SITU, COMPRISING A VERTICAL PILLAR AND A HEAD UNIT SUPPORTED AT THE TOP END OF SAID PILLAR, SAID PILLAR COMPRISING A PLURALITY OF SEPARATE SECTIONS WHICH ARE JOINABLE WITH EACH OTHER END TO END TO FORM SAID VERTICAL PILLAR, A FRAME FIXEDLY ATTACHABLE SUCCESSIVELY TO EACH ONE OF SAID SECTIONS, SAID HEAD UNIT COMPRISING A CAGE, WHICH COMPRISES SIDE PORTIONS EXTENDING DOWNWARDLY AND ABOUT THE UPPER END PORTION OF SAID PILLAR, LIFTING MEANS ASSOCIATED WITH SAID FRAME AND SAID CAGE WHEREBY ACTUATION OF SAID LIFTING MEANS WHEN SAID FRAME IS FIXEDLY ATTACHED TO A ONE OF SAID SECTIONS CAUSES SAID CAGE TO MOVE VERTICALLY RELATIVE TO SAID PILLAR AND TO SAID FRAME, LOCKING MEANS FOR LOCKING SAID CAGE RELATIVE TO SAID PILLAR, SAID FRAME BEING RELEASABLE FROM ITS FIXED ATTACHMENT WITH SAID PILLAR AND BEING MOVABLE VERTICALLY RELATIVE TO SAID PILLAR AND TO SAID CAGE A DISTANCE SLIGHTLYIN EXCESS OF THE VERTICAL HEIGHT OF ANY ONE OF SAID PILLAR SECTIONS WHEN SAID CAGE IS LOCKED RELATIVE TO SAID PILLAR WHEREBY AN ADDITIONAL ONE OF SAID PILLAR SECTIONS CAN BE ATTACHED ATOP SAID PILLAR BELOW SAID FRAME AND TO THE PRECEDING TOPMOST SECTION IN SAID PILLAR, AND DRIVE MEANS FOR ACTUATING SAID LIFTING MEANS.
References Cited (Backward Citations)
US2857994A
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 |