US3261476A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Vertically swinging boom having asymmetrical actuation
Assignee: Ohio Brass Co
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Filing: 1965-01-06
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Granted: 1966-07-19
•
Expires: 1985-01-06
Abstract
No abstract record available.
Inventors
- 👤 Paul D Gernhardt
- 👤 Curtis W Verrell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 08:57
CPC Classifications
B; B66; B66C; B66C13/00; B66C13/18; B66C2700/00; B66C2700/06; B66C2700/062
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
73 words
IN A DERRICK COMPRISING A SUPPORT, A BOOM PIVOTALLY MOUNTED ON THE SUPPORT, A RECEPROCAL MOTOR UNIT EXTENDING BETWEEN THE SUPPORT AND BOOM FOR SWINGING THE BOOM IN A GENERALLY VERTICAL PLANE, SAID MOTOR UNIT BEING OFFSET LATERALLY FROM THE LENGTHWISE AXIS OF THE BOOM, AND MEANS EXTENDING BETWEEN THE BOOM AND THE SUPPORT FOR RESISTING OFFSET LOADING APPLIED BY THE MOTOR UNIT TO THE PIVOTAL CONNECTION OF SAID BOOM TO SAID SUPPORT.
Claim 2
Dependent Claim
73 words
IN A DERRICK COMPRISING A SUPPORT, A BOOM PIVOTALLY MOUNTED ON THE SUPPORT, A RECEPROCAL MOTOR UNIT EXTENDING BETWEEN THE SUPPORT AND BOOM FOR SWINGING THE BOOM IN A GENERALLY VERTICAL PLANE, SAID MOTOR UNIT BEING OFFSET LATERALLY FROM THE LENGTHWISE AXIS OF THE BOOM, AND MEANS EXTENDING BETWEEN THE BOOM AND THE SUPPORT FOR RESISTING OFFSET LOADING APPLIED BY THE MOTOR UNIT TO THE PIVOTAL CONNECTION OF SAID BOOM TO SAID SUPPORT.
References Cited (Backward Citations)
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US3051324A
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US2948411A
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Cited
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Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-07-18 | 1970-01-17 | 1970-07-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-07-18 | 1974-01-17 | 1974-07-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-07-18 | 1978-01-17 | 1978-07-19 | $7700.00 | Window Closed / Lapsed |