Patent US5133931A successfully refreshed from Google Patents.
Patent US3259251A successfully refreshed from Google Patents.
US3259251A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Extensible boom with tandem operating cylinders
Assignee: Jeffrey Galion Manufacturing Co
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Filing: 1963-12-26
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Granted: 1966-07-05
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Expires: 1983-12-26
Abstract
No abstract record available.
Inventors
- 👤 Robert E Stauffer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 12:45
CPC Classifications
B; B66; B66C; B66C23/00; B66C23/62; B66C23/72; B66C13/00; B66C13/18; B66C23/64; B66C23/70; B66C23/701; B66C23/705; B66D; B66D1/00; B66D1/02; B66D1/08; B66C2700/00; B66C2700/03; B66C2700/0392; B66C2700/06; B66C2700/062; B66D2700/00; B66D2700/01; B66D2700/0125; B66D2700/0133
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
108 words
A CRANE STRUCTURE COMPRISING, A LOWER BOOM AND AN UPPER BOOM IN WHICH THE UPPER BOOM IS ADAPTED TO BE EXTENDED AND RETRACTED RELATIVELY TO THE LOWER BOOM, POWER MEANS FOR EXTENDING AND RETRACTING SAID UPPER BOOM, SAID POWER MEANS INCLUDING A FIRST POWER UNIT AND A SECOND POWER UNIT ARRANGED IN TANDEM TO APPLY THE FORCE OF BOTH POWER UNITS TO EXTEND AND RETRACT THE UPPER BOOM, AND A FLEXIBLE JOINT CONNECTION LOCATED BETWEEN SAID POWER UNITS AND DISPOSED IN LINE WITH THE TANDEM ARRANGEMENT OF SAID POWER UNITS FOR CONNECTING SAID POWER UNITS TO EACH OTHER WHEREBY SAID POWER UNITS ARE YIELDABLE RELATIVELY TO EACH OTHER.
Claim 2
Dependent Claim
108 words
A CRANE STRUCTURE COMPRISING, A LOWER BOOM AND AN UPPER BOOM IN WHICH THE UPPER BOOM IS ADAPTED TO BE EXTENDED AND RETRACTED RELATIVELY TO THE LOWER BOOM, POWER MEANS FOR EXTENDING AND RETRACTING SAID UPPER BOOM, SAID POWER MEANS INCLUDING A FIRST POWER UNIT AND A SECOND POWER UNIT ARRANGED IN TANDEM TO APPLY THE FORCE OF BOTH POWER UNITS TO EXTEND AND RETRACT THE UPPER BOOM, AND A FLEXIBLE JOINT CONNECTION LOCATED BETWEEN SAID POWER UNITS AND DISPOSED IN LINE WITH THE TANDEM ARRANGEMENT OF SAID POWER UNITS FOR CONNECTING SAID POWER UNITS TO EACH OTHER WHEREBY SAID POWER UNITS ARE YIELDABLE RELATIVELY TO EACH OTHER.
References Cited (Backward Citations)
US2551246A
Cited
US2568228A
Cited
US2903142A
Cited
US2969042A
Cited
US3044635A
Cited
US3093248A
Cited
US3051323A
Cited
US3103281A
Cited
US3154199A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-07-04 | 1970-01-03 | 1970-07-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-07-04 | 1974-01-03 | 1974-07-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-07-04 | 1978-01-03 | 1978-07-05 | $7700.00 | Window Closed / Lapsed |