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US 12,031,342 B2Granted
Hoist platform system for multi-floor building construction
AssigneeLink Lift IP Pty Ltd
InventorsSam Lazzari, Silas Warhurst, Richard Burchell
Life of this patent
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Abstract
A master hoisting platform, comprising: an outer frame removably installable inside a floor of a multi-floor building under construction; and an inner frame slidable in the outer frame between a retracted position inside the floor and an extended position outside the floor; wherein the inner frame comprises a framework structure to mount a hoist comprising a winch positioned rearwardly above the inner frame, and a sheave positioned forwardly above the inner frame.
Claims3
A hoisting apparatus, comprising:
- an outer frame comprising a pair of parallel spaced apart beams;
- an inner frame slidable in the outer frame between a retracted position inside the outer frame and an extended position outside the outer frame;
- wherein the inner frame has a portion that comprises a single unitary framework structure extending above the outer frame;
- wherein the single unitary framework structure comprises side and top frame members, and a single horizontal top sheave member;
- a single winch is horizontally fixed to the single unitary framework structure;
- and
- a single sheave is horizontally movable away from and towards the single winch inside the single unitary framework structure along and underneath the single horizontal top sheave member.
4 more elements
Dependencies are inferred from the claim text.