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US 6,182,788 B2Granted
Elevating work platform
AssigneeHolt Industries PTY Ltd.
InventorNeil James Senior
Life of this patent
Estimating the term…
Abstract
An elevating work platform unit is mountable on, and de-mountable from, a vehicle. A counter leverage arm assembly is connectable to the vehicle to provide vertical stability for the mast which supports a boom and platform for luffing and/or slewing movement.
Claims16
A work platform unit to be mounted to a vehicle comprising:
- a support frame;
- a base frame, supporting a substantially vertical mast body;
- a mast post rotatably supported by the mast body, the mast post supporting a boom for luffing or slewing movement relative to the base frame;
- coupling means for enabling releasable coupling of the base frame to the support frame;
- retractable stabilizing means positioned respectively adjacent each end of the base frame;
- and
- bracing means including diagonal braces between the base frame and an upper end of the mast body, and a counter leverage arm comprising a pair of L-shaped arms coupled to the base frame, each having a vertical leg extending along the mast body, a horizontal leg extending from the top of the vertical leg and extending away form the mast body and connected to a transversely extending cross-bar the base frame to the vehicle at a fixed point spaced along the longitudinal axis of the vehicle from the support frame, the bracing means providing vertical stability to the upper end of the mast body so that only vertical loads are applied by the work platform.
4 more elements
A vehicle fitted with a work platform unit said work platform unit comprising:
- a support frame;
- a base frame, supporting a substantially vertical mast body;
- a mast post rotatably supported by the mast body, the mast post supporting a boom for luffing or slewing movement relative to the base frame;
- coupling means for enabling releasable coupling of the base frame to the support frame;
- retractable stabilizing means positioned respectively adjacent each end of the base frame;
- and
- bracing means including diagonal braces between the base frame and an upper end of the mast body, and a counter leverage arm comprising a pair of L-shaped arms coupled to the base frame, each having a vertical leg extending along the mast body, a horizontal leg extending from the top of the vertical leg and extending away form the mast body and connected to a transversely extending cross-bar interconnecting the base frame to the vehicle at a fixed point spaced along the longitudinal axis of the vehicle from the support frame, the bracing means providing vertical stability to the upper end of the mast body so that only vertical loads are applied by the work platform.
4 more elements
Dependencies are inferred from the claim text.