US3715039A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Telescopic boom
Assignee: CNH Industrial Baumaschinen GmbH
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Filing: 1970-12-15
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Granted: 1973-02-06
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Expires: 1990-12-15
Abstract
Abstract A composite boom having a boom section pivotally connected to a supporting member and also having a boom means telescopically movable into and out of said boom section while hydraulically operable cylinder-piston means arranged in telescopically movable housing elements are operable to actuate said boom means through the intervention of at least one of said housing elements, said hydraulically operable cylinder-piston means including serially arranged cylinder and pistons.
Inventors
- 👤 W Kollmann
- 👤 D Schwappach
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 14:48
CPC Classifications
B; B66; B66C; B66C23/00; B66C23/62; B66C23/64; B66C23/70; B66C23/701; B66C23/705
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
173 words
In combination with a lifting device comprising a supporting means: a composite boom having a plurality of telescoping boom sections including a main boom section pivotally connected to said supporting means and successive telescoping boom sections including an end boom section telescoping into said main boom section, a plurality of pairs of telescoping elements, each pair having the end of one element fastened to one boom section and the opposite end of the other element connected to the next successive boom section and a plurality of hydraulically operated cylinder-piston means arranged in series and confined within each pair of telescoping elements with the end element of one cylinder-piston means connected to one end of one telescoping element and the end element of another cylinder-piston means connected to the opposite end of the other element, said cylinder-piston means including guide means engaging said telescoping elements to maintain said series of cylinders and pistons in substantial alignment, said series of cylinder-piston means having their cylinders connected to the pistons of the next successive cylinder-piston means.
Claim 2
Dependent Claim
173 words
In combination with a lifting device comprising a supporting means: a composite boom having a plurality of telescoping boom sections including a main boom section pivotally connected to said supporting means and successive telescoping boom sections including an end boom section telescoping into said main boom section, a plurality of pairs of telescoping elements, each pair having the end of one element fastened to one boom section and the opposite end of the other element connected to the next successive boom section and a plurality of hydraulically operated cylinder-piston means arranged in series and confined within each pair of telescoping elements with the end element of one cylinder-piston means connected to one end of one telescoping element and the end element of another cylinder-piston means connected to the opposite end of the other element, said cylinder-piston means including guide means engaging said telescoping elements to maintain said series of cylinders and pistons in substantial alignment, said series of cylinder-piston means having their cylinders connected to the pistons of the next successive cylinder-piston means.
Claim 3
Dependent Claim
173 words
In combination with a lifting device comprising a supporting means: a composite boom having a plurality of telescoping boom sections including a main boom section pivotally connected to said supporting means and successive telescoping boom sections including an end boom section telescoping into said main boom section, a plurality of pairs of telescoping elements, each pair having the end of one element fastened to one boom section and the opposite end of the other element connected to the next successive boom section and a plurality of hydraulically operated cylinder-piston means arranged in series and confined within each pair of telescoping elements with the end element of one cylinder-piston means connected to one end of one telescoping element and the end element of another cylinder-piston means connected to the opposite end of the other element, said cylinder-piston means including guide means engaging said telescoping elements to maintain said series of cylinders and pistons in substantial alignment, said series of cylinder-piston means having their cylinders connected to the pistons of the next successive cylinder-piston means.
Claim 4
Dependent Claim
173 words
In combination with a lifting device comprising a supporting means: a composite boom having a plurality of telescoping boom sections including a main boom section pivotally connected to said supporting means and successive telescoping boom sections including an end boom section telescoping into said main boom section, a plurality of pairs of telescoping elements, each pair having the end of one element fastened to one boom section and the opposite end of the other element connected to the next successive boom section and a plurality of hydraulically operated cylinder-piston means arranged in series and confined within each pair of telescoping elements with the end element of one cylinder-piston means connected to one end of one telescoping element and the end element of another cylinder-piston means connected to the opposite end of the other element, said cylinder-piston means including guide means engaging said telescoping elements to maintain said series of cylinders and pistons in substantial alignment, said series of cylinder-piston means having their cylinders connected to the pistons of the next successive cylinder-piston means.
Claim 5
Dependent Claim
41 words
In the combination claimed in claim 1, the opposite ends of each series of a plurality of cylinder-piston means being connected to the opposite ends of said telescoping elements by the Means connecting said telescoping elements to the corresponding boom sections.
Claim 6
Dependent Claim
29 words
In the combination in claim 1, the plurality of cylinder-piston means having said guide means carried by the connections between the respective cylinders and pistons engaging said telescoping elements.
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) | 1976-02-06 | 1976-08-07 | 1977-02-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-02-06 | 1980-08-07 | 1981-02-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-02-06 | 1984-08-07 | 1985-02-06 | $7700.00 | Window Closed / Lapsed |