US3262580A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Slewable gantry crane
Assignee: McDowell-Wellman Engineering Co
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Filing: 1964-06-23
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Granted: 1966-07-26
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Expires: 1984-06-23
Abstract
No abstract record available.
Inventors
- 👤 Morton L Markowitz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 14:25
CPC Classifications
B; B66; B66C; B66C19/00; B66C19/002; B66C13/00; B66C2700/00; B66C2700/01; B66C2700/012; B66C2700/017
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
190 words
A GANTRY CRANE COMPRISING FIRST AND SECOND SPACED LEGS AND AN INTERCONNECTING BRIDGE MEMBER, THE FIRST OF SAID LEGS BEING INTERCONNECTED AT ITS UPPER END TO SAID BRIDGE MEMBER, SAID FIRST LEG HAVING FIRST PIVOT MEANS THEREON PERMITTING ROTATION OF SAID BRIDGE MEMBER ABOUT A LONGITUDINAL AXIS OF SAID FIRST LEG, THE SECOND OF SAID LEGS BEING PIVOTALLY CONNECTED AT ITS UPPER END TO SAID BRIDGE MEMBER FOR RELATIVE ROTATION ABOUT A LONGITUDINAL AXIS OF THE SECOND LEG, SAID PIVOTAL CONNECTION BETWEEN SAID BRIDGE AND SAID SECOND LEG INCLUDING SECOND PIVOT MEANS AND STABILIZING MEANS, SAID STABILIZING MEANS COMPRISING A PAIR OF UPWARDLY FACING ANTI-FRICTION MEMBERS SECURED TO THE UPPER END OF SAID SECOND LEG ON OPPOSITE SIDES OF SAID SECOND PIVOT MEANS, AND COOPERATING BEARING MEMBERS SECURED TO SAID BRIDGE MEMBER AND BEING OF SUFFICIENT LATERAL EXTENT TO ENGAGE SAID ANTI-FRICTION MEMBERS DURING RELATIVE ROTATION OF SAID BRIDGE MEMBER AND SAID SECOND LEG THROUGH AN ARC OF AT LEAST 10. IN EITHER DIRECTION FROM A NORMAL POSITION, THE LOWER END OF AT LEAST ONE OF SAID LEGS BEING MOUNTED FOR LINEAR MOVEMENT RELATIVE TO THE OTHER OF SAID LEGS.
Claim 2
Dependent Claim
190 words
A GANTRY CRANE COMPRISING FIRST AND SECOND SPACED LEGS AND AN INTERCONNECTING BRIDGE MEMBER, THE FIRST OF SAID LEGS BEING INTERCONNECTED AT ITS UPPER END TO SAID BRIDGE MEMBER, SAID FIRST LEG HAVING FIRST PIVOT MEANS THEREON PERMITTING ROTATION OF SAID BRIDGE MEMBER ABOUT A LONGITUDINAL AXIS OF SAID FIRST LEG, THE SECOND OF SAID LEGS BEING PIVOTALLY CONNECTED AT ITS UPPER END TO SAID BRIDGE MEMBER FOR RELATIVE ROTATION ABOUT A LONGITUDINAL AXIS OF THE SECOND LEG, SAID PIVOTAL CONNECTION BETWEEN SAID BRIDGE AND SAID SECOND LEG INCLUDING SECOND PIVOT MEANS AND STABILIZING MEANS, SAID STABILIZING MEANS COMPRISING A PAIR OF UPWARDLY FACING ANTI-FRICTION MEMBERS SECURED TO THE UPPER END OF SAID SECOND LEG ON OPPOSITE SIDES OF SAID SECOND PIVOT MEANS, AND COOPERATING BEARING MEMBERS SECURED TO SAID BRIDGE MEMBER AND BEING OF SUFFICIENT LATERAL EXTENT TO ENGAGE SAID ANTI-FRICTION MEMBERS DURING RELATIVE ROTATION OF SAID BRIDGE MEMBER AND SAID SECOND LEG THROUGH AN ARC OF AT LEAST 10. IN EITHER DIRECTION FROM A NORMAL POSITION, THE LOWER END OF AT LEAST ONE OF SAID LEGS BEING MOUNTED FOR LINEAR MOVEMENT RELATIVE TO THE OTHER OF SAID LEGS.
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) | 1969-07-25 | 1970-01-24 | 1970-07-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-07-25 | 1974-01-24 | 1974-07-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-07-25 | 1978-01-24 | 1978-07-26 | $7700.00 | Window Closed / Lapsed |