HOISTING DEVICE AND A COMPONENT MODULE FOR A HOISTING OR TRANSFERRING DEVICE
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United States of America Patent
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Issued Date -
Jul 4, 2013
app pub date -
Sep 13, 2011
filing date -
Sep 14, 2010
priority date (Note) -
Abandoned
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Abstract
A hoisting device, comprising a base structure; a work platform structure, and at least one cylinder coupled between the base structure and the work platform structure; at least one chamber with a variable volume, for pressurized medium, configured to elevate the work platform structure by utilizing the pressurized medium enclosed in the chamber; and at least one pulling device configured to pull down the work platform structure. In an example, the hoisting device further comprises at least one auxiliary chamber intended for the pressurized medium, connected to the chamber of the cylinder, and placed inside the base structure or the work platform structure, or in the structure of the cylinder. A component module for a hoisting or transferring device comprises a cylinder and a base structure. In the method, variation of the pressure in the chamber of the cylinder is allowed.
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