Method and apparatus for reaching from outside an upper level of a tall structure
AssigneeMarvin M. May
InventorMarvin M. May
Life of this patent
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Abstract
An embodiment of the invention is directed to a system having a pulley attached to a building. A closed loop of cable is installed around the pulley. The loop is of sufficient length so as to reach, when deployed outside of the building, below the pulley to where emergency personnel gather in an area next to a base of the building (when responding to a disaster situation in the building). A winch around which the loop is to be operatively installed is located in the area next to the base. Other embodiments are also described and claimed.
Claims21
A lifting system for raising a suspended load to an upper level of a tall structure, comprising:
- a top pulley attached to a structure;
- a closed loop of cable installed around the top pulley;
- a load attached to a near section of the loop, wherein a far section of the loop is positioned farther from a side of the structure than the near section;
- a traction winch around which the loop is installed, the traction winch being powered to rotate in one direction to pull in the far section of the loop and thereby raise the attached load, and to rotate under braking in an opposite direction to let out the far section of the loop and thereby lower the attached load;
- and
- a moveable pulley within the loop, the moveable pulley to be moved relative to the traction winch and the top pulley to thereby (i) increase tension in the loop so that the attached load moves away from a side of the structure and (ii) decrease tension in the loop so that the attached load moves towards the side of the structure.
A lifting system for raising a suspended load to an upper level of a tall structure, comprising:
- a top pulley attached to a structure;
- a loop of cable installed to a structure;
- a load attached to a near section of the loop, wherein a far section of the loop is positioned farther from a side of the structure than the near section;
- a traction winch around which the loop is installed, the traction winch being powered to rotate in one direction to pull in the far section of the loop and thereby raise the attached load, and to rotate under braking in an opposite direction to let out the far section of the loop and thereby lower the attached load, wherein the traction winch is breech loadable;
- and
- means for moving the attached load closer to and farther from the structure.
A lifting system for raising a suspended load to an upper level of a tall structure, comprising:
- a top pulley attached to a structure;
- a loop of cable installed around the top pulley;
- a container to carry equipment and personnel attached to a near section of the loop, wherein a far section of the loop is positioned farther from a side of the structure than the near section;
- a traction winch around which the loop is installed, the traction winch being powered to rotate in one direction to pull in the far section of the loop and thereby raise the attached container, and to rotate under braking in an opposite direction to let out the far section of the loop and thereby lower the attached container;
- and
- a moveable pulley within the loop and that is to be moved to push against the loop and thereby increase tension in the near portion of the loop.
Dependencies are inferred from the claim text.