US3620379A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Telescopic jib with a telescopic inclinable end member for cranes
Assignee: Individual
•
Filing: 1969-12-29
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Granted: 1971-11-16
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Expires: 1989-12-29
Abstract
Abstract A telescopic jib for a crane, the jib being provided with an inclinable telescopic end element which is slidable in the internal element of the jib and can be fixed to this element in various positions when it is aligned therewith, by pinning or the like, and which when in a fully extended position can assume various inclinations relative to the jib, the said end element then being capable of pivoting around the fixing pin and of being fixed in the selected inclined position by means of another pin or the like.
Inventors
- 👤 Jean Fauchere
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 08:26
CPC Classifications
B; B66; B66C; B66C23/00; B66C23/62; B66C23/64; B66C23/70; B66C23/701
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
180 words
A telescopic jib for cranes, which comprises at least two telescopic elements, the internal element of said jib having a head portion projecting from the other jib element in its retracted position and carrying retractable pinning means; an inclinable telescopic end element which carries a head provided with a hoisting pulley and is slidable in said internal element of the jib, said end element being provided with a plurality of axially spaced hole means cooperating with the retractable pinning means of the internal element and serving 1. to secure said end element relatively to said internal element in various aligned positions corresponding to various degrees of extension of the end element relatively to the internal element of the jib, said internal element being provided with a plurality of holes radially spaced about said retractable pinning means and second pinning means cooperating with said radially spaced holes; 2. to incline said end element relatively to the internal element when said end element is pinned in its fully extended position; and means for securing said end element in a selected inclined position.
Claim 2
Dependent Claim
180 words
A telescopic jib for cranes, which comprises at least two telescopic elements, the internal element of said jib having a head portion projecting from the other jib element in its retracted position and carrying retractable pinning means; an inclinable telescopic end element which carries a head provided with a hoisting pulley and is slidable in said internal element of the jib, said end element being provided with a plurality of axially spaced hole means cooperating with the retractable pinning means of the internal element and serving 1. to secure said end element relatively to said internal element in various aligned positions corresponding to various degrees of extension of the end element relatively to the internal element of the jib, said internal element being provided with a plurality of holes radially spaced about said retractable pinning means and second pinning means cooperating with said radially spaced holes; 2. to incline said end element relatively to the internal element when said end element is pinned in its fully extended position; and means for securing said end element in a selected inclined position.
Claim 3
Dependent Claim
24 words
A telescopic jib as claimed in claim 1, wherein the means for securing the end element in a selected inclined position are pinning means.
Claim 4
Dependent Claim
33 words
to incline said end element relatively to the internal element when said end element is pinned in its fully extended position; and means for securing said end element in a selected inclined position.
Claim 5
Dependent Claim
33 words
to incline said end element relatively to the internal element when said end element is pinned in its fully extended position; and means for securing said end element in a selected inclined position.
Claim 6
Dependent Claim
24 words
A telescopic jib as claimed in claim 1, wherein the head portion of the internal element of the jib carries also a hoisting pulley.
References Cited (Backward Citations)
SU185476A1
Cited
US2575564A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-11-15 | 1975-05-17 | 1975-11-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-11-15 | 1979-05-17 | 1979-11-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-11-15 | 1983-05-17 | 1983-11-16 | $7700.00 | Window Closed / Lapsed |