Patent US3584703A successfully refreshed from Google Patents.
US3584703A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hydraulic platforms
Assignee: Simon Engineering Dudley Ltd
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Filing: 1969-06-02
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Granted: 1971-06-15
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Expires: 1989-06-02
Abstract
Abstract A hydraulic platform comprising a boom assembly movable between substantially horizontal and vertical dispositions and mounting a platform cage at its free end, and a ladder extending alongside at least part of the boom assembly between the cage and a position above the boom-supporting surface, the ladder being extensible from said position into contact with the ground or other convenient surface which provides a landing area.
Inventors
- 👤 Kenneth Henry Lane
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 12:39
CPC Classifications
B; B66; B66F; B66F11/00; B66F11/04; B66F11/044; E; E06; E06C; E06C5/00; E06C5/02; E06C5/04
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
148 words
A hydraulic platform comprising a boom assembly movable between substantially horizontal and vertical dispositions and mounting a platform cage at its free end, and a ladder extending alongside at least part of the boom assembly between the cage and a position above the boom-supporting surface, said ladder being extensible from said position into contact with the ground or other convenient surface which provides a landing area, said boom assembly comprising a plurality of pivotally interconnected booms extensible by hydraulic rams between a stowed position wherein the booms are substantially parallel and horizontal and an extended position wherein the booms are in substantially end-toend alignment, and said ladder being comprised by a number of ladder sections associated with at least some of said booms, the lowermost ladder section being extensible downwardly of its supporting boom for contact with the ground or other convenient surface which provides a landing area.
Claim 2
Dependent Claim
148 words
A hydraulic platform comprising a boom assembly movable between substantially horizontal and vertical dispositions and mounting a platform cage at its free end, and a ladder extending alongside at least part of the boom assembly between the cage and a position above the boom-supporting surface, said ladder being extensible from said position into contact with the ground or other convenient surface which provides a landing area, said boom assembly comprising a plurality of pivotally interconnected booms extensible by hydraulic rams between a stowed position wherein the booms are substantially parallel and horizontal and an extended position wherein the booms are in substantially end-toend alignment, and said ladder being comprised by a number of ladder sections associated with at least some of said booms, the lowermost ladder section being extensible downwardly of its supporting boom for contact with the ground or other convenient surface which provides a landing area.
Claim 3
Dependent Claim
27 words
A hydraulic platform as claimed in claim 1, in which the lowermost ladder section carried at the side of a boom is pivotal relative to the latter.
Claim 4
Dependent Claim
39 words
A hydraulic platform according to claim 2 wherein said lowermost ladder section is adjustably secured to a boom adjacent its bottom by a rope or the like looped around a rod on the boom side and a securing means.
Claim 5
Dependent Claim
16 words
A hydraulic platform according to claim 3 wherein there are two booms and two ladder sections.
Claim 6
Dependent Claim
36 words
A hydraulic platform as claimed in claim 4 including a ladder at the cage location and extensible above the cage to provide a ladder extension of the boom reaching beyond the highest elevation of the cage.
Claim 7
Dependent Claim
20 words
A hydraulic platform as claimed in claim 4 in which the ladder or ladder sections are dismountable from the boom.
Claim 8
Dependent Claim
107 words
An access platform comprising a boom assembly mounted at one end upon elevated support means and having a platform cage at its free end, said boom assembly being moveable between a lowered stowed disposition and a raised working disposition supporting the platform cage at an elevated position a material distance above said support means, a ladder extending alongside at least part of the raised boom assembly between the cage and a region above said support means, and a movable lower section on said ladder having a section that is extensible from said region substantially into contact with the ground or other surface that provides a landing area.
Claim 9
Dependent Claim
107 words
An access platform comprising a boom assembly mounted at one end upon elevated support means and having a platform cage at its free end, said boom assembly being moveable between a lowered stowed disposition and a raised working disposition supporting the platform cage at an elevated position a material distance above said support means, a ladder extending alongside at least part of the raised boom assembly between the cage and a region above said support means, and a movable lower section on said ladder having a section that is extensible from said region substantially into contact with the ground or other surface that provides a landing area.
Claim 10
Dependent Claim
36 words
A hydraulic platform as claimed in claim 7 including a ladder at the cage location and extensible above the cage to provide a ladder extension of the boom reaching beyond the highest elevation of the cage.
Claim 11
Dependent Claim
20 words
A hydraulic platform as claimed in claim 7 in which the ladder or ladder sections are dismountable from the boom.
Claim 12
Dependent Claim
13 words
A hydraulic platform as claimed in claim 7 when mounted on a vehicle.
Claim 13
Dependent Claim
155 words
A boom assembly comprising a plurality of booms pivotally connected end to end, a turntable mounted on a vehicle at a location that is elevated relative to the ground and on which an end of one of the booms is mounted, a cage mounted on the free end of the outer boom, said boom assembly being movable between a folded lower position wherein the booms are generally side by side and a raised unfolded position wherein the booms extend upwardly from said turntable to dispose said cage in an elevated position, a ladder extending along said boom assembly and having an upper section mounted on the upper boom and a lower section pivotally connected at its upper end to the ladder section above it and to the upper end of said lower boom, said lower ladder section when said boom assembly is in raised position being extensible to substantially reach the ground adjacent the vehicle.
Claim 14
Dependent Claim
155 words
A boom assembly comprising a plurality of booms pivotally connected end to end, a turntable mounted on a vehicle at a location that is elevated relative to the ground and on which an end of one of the booms is mounted, a cage mounted on the free end of the outer boom, said boom assembly being movable between a folded lower position wherein the booms are generally side by side and a raised unfolded position wherein the booms extend upwardly from said turntable to dispose said cage in an elevated position, a ladder extending along said boom assembly and having an upper section mounted on the upper boom and a lower section pivotally connected at its upper end to the ladder section above it and to the upper end of said lower boom, said lower ladder section when said boom assembly is in raised position being extensible to substantially reach the ground adjacent the vehicle.
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) | 1974-06-14 | 1974-12-14 | 1975-06-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-06-14 | 1978-12-14 | 1979-06-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-06-14 | 1982-12-14 | 1983-06-15 | $7700.00 | Window Closed / Lapsed |