Patent JPS4914633A successfully refreshed from Google Patents.
Patent US3797675A successfully refreshed from Google Patents.
US3797675A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Crane
Assignee: Individual
•
Filing: 1972-05-25
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Granted: 1974-03-19
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Expires: 1992-05-25
Abstract
Abstract A crane including a base that supports telescoping upright members. A boom is pivotally carried on the extendible upright member upwardly. A fluid motor is pivotally connected with the boom and is adapted to to be moved, as a unit, to various heights.
Inventors
- 👤 J Moore
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 13:38
CPC Classifications
B; B66; B66C; B66C23/00; B66C23/18; B66C23/36; B66C23/48
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
237 words
A crane comprising in combination: A. An element for forming an elongated base; B. Casters for supporting the base; C. An element forming a post carried adjacent one end of the base; D. A support for a fluid motor carried by the post above the base; E. A vertically movable upright member guided by the post; F. Means for locking the upright member with the post; G. A boom, said boom extending toward the opposite end of the base; H. A pivot for supporting the boom on said upright member; I. A fluid pump including a cylinder means and a ram means, one of said means being adapted to be pivotally supported by said support and adapted to be pivotally connected with one of said elements, the other of said means being pivotally connected with the boom intermediate the ends of the boom; J. A platform; K. A support for the platform; L. A pivot for supporting the support on the boom on an axis parallel with respect to the axis for the pivot for the boom; M. A roller pivotally connected with the support, said roller being threaded about an axis lying transversely to the axis of the last mentioned pivot; N. A threaded element forming a screw extending through and in threaded relationship with the threads in the roller, said threaded element being disposed upon turning thereof to move the roller relative to the boom.
Claim 2
Dependent Claim
237 words
A crane comprising in combination: A. An element for forming an elongated base; B. Casters for supporting the base; C. An element forming a post carried adjacent one end of the base; D. A support for a fluid motor carried by the post above the base; E. A vertically movable upright member guided by the post; F. Means for locking the upright member with the post; G. A boom, said boom extending toward the opposite end of the base; H. A pivot for supporting the boom on said upright member; I. A fluid pump including a cylinder means and a ram means, one of said means being adapted to be pivotally supported by said support and adapted to be pivotally connected with one of said elements, the other of said means being pivotally connected with the boom intermediate the ends of the boom; J. A platform; K. A support for the platform; L. A pivot for supporting the support on the boom on an axis parallel with respect to the axis for the pivot for the boom; M. A roller pivotally connected with the support, said roller being threaded about an axis lying transversely to the axis of the last mentioned pivot; N. A threaded element forming a screw extending through and in threaded relationship with the threads in the roller, said threaded element being disposed upon turning thereof to move the roller relative to the boom.
Claim 3
Dependent Claim
25 words
A crane as defined in claim 1 characterized to include: said threaded element extending beyond the end of said boom and terminating in a knob.
Claim 4
Dependent Claim
30 words
A crane as defined in claim 1 charActerized to include: means for adjustably inclining said platform about an axis transverse to the axis of said pivot for supporting the support.
Claim 5
Dependent Claim
75 words
A crane as defined in claim 1, characterized to include: O. an elongated member pivotally connected adjacent one end thereof with the upright member, said latter elongated member extending toward the opposite boom, said opposite end being threaded; and further characterized in that said element (N) is in threaded relationship with the threads on the elongated member (O), one of the threads on said element (N) being right handed and the other being left handed.
Claim 6
Dependent Claim
87 words
A crane as defined in claim 1, characterized to include: P. an elongated member; Q. a pivot for pivotally connecting the elongated member adjacent one end thereof with the upright member; R. a pivot for connecting the elongated member, adjacent the opposite end thereof, with the support (K), the axes of said pivots (H), (L) and (N) and the axis of the roller being disposed to cooperate to form a pantograph with the upright member (E), the boom (G), the elongated member (P) and the support (K).
Claim 7
Dependent Claim
56 words
A crane as defined in claim 5, characterized in that said opposite end of the elongated member is threaded; and further characterized in that said element (M) is in threaded relationship with the threads on the elongated member (Q), one of said threads on the element (P) being right handed and the other being left handed.
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) | 1977-03-18 | 1977-09-17 | 1978-03-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-03-18 | 1981-09-17 | 1982-03-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-03-18 | 1985-09-17 | 1986-03-19 | $7700.00 | Window Closed / Lapsed |