Elevator Load Bearing Member Having A Jacket With At Least One Traction-Enhancing Exterior Surface
AssigneeOtis Elevator Company
InventorsMark S. Thompson, John P. Wesson, William A. Veronesi, Hugh J. O'Donnell, John Pitts, William C. Perron, Ary O. Mello, Kathryn Rauss
Life of this patent
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Abstract
An elevator load bearing member assembly includes at least one traction enhancing surface (46) on a jacket (44). In one example, a mechanical removal process is used to strip away at least some of an amide-rich layer from the surface (46) after the jacket has been extruded onto tension members (42). In another example, a chemical removal process is used. Another disclosed example includes disrupting the surface.
Claims23
1-20. (canceled)
A method of making a load bearing member for use in an elevator system, comprising:
- displacing at least some material on at least one surface of a polymer jacket that generally surrounds at least one tension member for achieving a desired traction characteristic of the jacket.
A load bearing member for use in an elevator system, made by the process, comprising:
- displacing at least some material on at least one surface of a polymer jacket that generally surrounds at least one tension member for achieving a desired traction characteristic of the jacket.
A load bearing member for use in an elevator system, comprising:
- at least one tension member;
- and
- a jacket generally surrounding the tension member, the jacket having at least one surface defining at least a portion of an outermost layer of the jacket, the one surface comprising exposed, pure polyurethane.
Dependencies are inferred from the claim text.