Patent CA856570A successfully refreshed from Google Patents.
US3302801A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Gantry crane with extensible bridge girder carrying legs
Assignee: Individual
•
Filing: 1965-02-17
•
Granted: 1967-02-07
•
Expires: 1985-02-17
Abstract
No abstract record available.
Inventors
- 👤 Poroli Vincenzo
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 10:35
CPC Classifications
B; B66; B66C; B66C23/00; B66C23/18; B66C23/26; B66C23/28; B66C23/283; B66C19/00; B66C19/02; E; E04; E04H; E04H12/00; E04H12/34
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
160 words
A GANTRY CRANE COMPRISING AT LEAST ONE BRIDGE GIRDER AND TRUSSED LEGS CARRYING THE BRIDGE GIRDER, SAID TRUSSED LEGS COMPRISING A PLURALITY OF VERTICALLY ALIGNED AND SUPERPOSED TRUSSED SECTIONS REMOVABLEY CONNECTED TOGETHER, AT EACH OF SAID TRUSSED LEGS: A VERTICALLY EXTENDING AND VERTICALLY MOVABLE AUXILIARY TRUSSED STRUCTURE LATERALLY ARRANGED WITH RESPECT TO SAID TRUSSED LEGS AND HAVING A LOWER END REMOVABLY CONNECTED WITH ONE OF SAID TRUSSED SECTIONS, AT EACH OF SAID TRUSSED LEGS: A JACK MEANS HAVING A FIRST JACK MEMBER AND A SECOND JACK MEMBER MOVABLE RELATIVE TO EACH OTHER, SAID FIRST JACK MEMBER BEING VERTICALLY RIGID WITH SAID AUXILIARY TRUSSED STRUCTURE AND SAID SECOND JACK MEMBER BEING VERTICALLY RIGID WITH SAID BRIDGE GIRDER, POWER MEANS FOR ACTUATING SAID JACK MEANS, THEREBY TO VERTICALLY MOVE RELATIVE TO EACH OTHER SAID AUXILIARY TRUSSED STRUCTURE AND SAID BRIDGE GIRDER, AND ADDITIONAL TRUSSED SECTIONS TO BE INTERPOSED BETWEEN SAID AUXILIARY TRUSSED STRUCTURE AND SAID BRIDGE GIRDER WHEN SPACED FROM ONE ANOTHER.
Claim 2
Dependent Claim
160 words
A GANTRY CRANE COMPRISING AT LEAST ONE BRIDGE GIRDER AND TRUSSED LEGS CARRYING THE BRIDGE GIRDER, SAID TRUSSED LEGS COMPRISING A PLURALITY OF VERTICALLY ALIGNED AND SUPERPOSED TRUSSED SECTIONS REMOVABLEY CONNECTED TOGETHER, AT EACH OF SAID TRUSSED LEGS: A VERTICALLY EXTENDING AND VERTICALLY MOVABLE AUXILIARY TRUSSED STRUCTURE LATERALLY ARRANGED WITH RESPECT TO SAID TRUSSED LEGS AND HAVING A LOWER END REMOVABLY CONNECTED WITH ONE OF SAID TRUSSED SECTIONS, AT EACH OF SAID TRUSSED LEGS: A JACK MEANS HAVING A FIRST JACK MEMBER AND A SECOND JACK MEMBER MOVABLE RELATIVE TO EACH OTHER, SAID FIRST JACK MEMBER BEING VERTICALLY RIGID WITH SAID AUXILIARY TRUSSED STRUCTURE AND SAID SECOND JACK MEMBER BEING VERTICALLY RIGID WITH SAID BRIDGE GIRDER, POWER MEANS FOR ACTUATING SAID JACK MEANS, THEREBY TO VERTICALLY MOVE RELATIVE TO EACH OTHER SAID AUXILIARY TRUSSED STRUCTURE AND SAID BRIDGE GIRDER, AND ADDITIONAL TRUSSED SECTIONS TO BE INTERPOSED BETWEEN SAID AUXILIARY TRUSSED STRUCTURE AND SAID BRIDGE GIRDER WHEN SPACED FROM ONE ANOTHER.
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) | 1970-02-06 | 1970-08-08 | 1971-02-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-02-06 | 1974-08-08 | 1975-02-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-02-06 | 1978-08-08 | 1979-02-07 | $7700.00 | Window Closed / Lapsed |