US3341029A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Extensible boom construction
Assignee: Individual
•
Filing: 1965-10-06
•
Granted: 1967-09-12
•
Expires: 1985-10-06
Abstract
No abstract record available.
Inventors
- 👤 Byron F Barkley
- 👤 William H Kibbie
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 15:00
CPC Classifications
B; B66; B66C; B66C23/00; B66C23/62; B66C23/64; B66C23/70; B66C23/701; B66C23/703
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
70 words
AN EXTENSIBLE BOOM FOR A CRANE OR THE LIKE, COMPRISING IN COMBINATION: A PLURALITY OF ELONGATE BOOM SECTIONS INTERFITTED FOR LONGITUDINAL EXTENSION AND EXTRACTION TO LENGTHEN AND SHORTEN THE BOOM; ROLLERS NORMALLY MOUNTING THE SEVERAL SECTIONS FOR ANTIFRICTION MOVEMENT RELATIVE TO ONE ANOTHER; SLIDE PLATES ARRANGED BETWEEN SAID SECTIONS TO PERMIT SLIDING MOVEMENT OF THE SEVERAL SECTIONS RELATIVE TO ONE ANOTHER UNDER CONDITIONS OF EXTREME LOADING OF THE BOOM; AND
Claim 2
Dependent Claim
70 words
AN EXTENSIBLE BOOM FOR A CRANE OR THE LIKE, COMPRISING IN COMBINATION: A PLURALITY OF ELONGATE BOOM SECTIONS INTERFITTED FOR LONGITUDINAL EXTENSION AND EXTRACTION TO LENGTHEN AND SHORTEN THE BOOM; ROLLERS NORMALLY MOUNTING THE SEVERAL SECTIONS FOR ANTIFRICTION MOVEMENT RELATIVE TO ONE ANOTHER; SLIDE PLATES ARRANGED BETWEEN SAID SECTIONS TO PERMIT SLIDING MOVEMENT OF THE SEVERAL SECTIONS RELATIVE TO ONE ANOTHER UNDER CONDITIONS OF EXTREME LOADING OF THE BOOM; AND
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) | 1970-09-11 | 1971-03-13 | 1971-09-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-09-11 | 1975-03-13 | 1975-09-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-09-11 | 1979-03-13 | 1979-09-12 | $7700.00 | Window Closed / Lapsed |