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US 6,493,910 B1Granted
Shoelace with enhanced knot retention and method of manufacture
AssigneeDelphi Oracle Corp.
InventorLouis Dischler
Life of this patent
Estimating the term…
Abstract
The present invention relates to a sheath/core shoelace having enhanced knot retention and to the method of manufacture.
Claims25
A method for manufacturing a lace having enhanced knot retention for an article of footwear, comprising:
- providing a cord having a length and a maximum cross-sectional dimension, wherein said length is at least 50 times greater than said maximum cross-sectional dimension;
- coating said cord with a powder;
- and
- constructing a sheath in close proximity around said cord, said sheath extending along said length of said cord, said sheath having an outer surface for self-contact within the knot, wherein said sheath is porous so that at least a portion of said powder is free to migrate through said sheath to said outer surface;
- whereby said cord provides a reservoir of said powder for said outer surface of said porous sheath.
2 more elements
A method for manufacturing a lace having enhanced knot retention for an article of footwear, comprising the steps:
- (a) providing a cord having a length and a maximum cross-sectional dimension, wherein said length is at least 50 times greater than said maximum cross-sectional dimension;
- (b) coating said cord with a powder dispersed in a solvent;
- (c) constructing a porous sheath in close proximity around said cord, said sheath extending along said length of said cord, said sheath having an outer surface for self-contact within the knot, wherein said sheath is porous so that at least a portion of said powder is free to migrate through said sheath to said outer surface;
- and
- (d) drying said solvent.
2 more elements
A lace having enhanced knot retention for an article of footwear, comprising:
- a cord having a length and a maximum cross-sectional dimension, wherein said length is at least 50 times greater than said maximum cross-sectional dimension;
- a powder coating said cord;
- and
- a porous sheath surrounding said cord and extending along said cord, said porous sheath having an outer surface for self-contact within the knot, wherein at least a portion of said powder is free to migrate through said porous sheath to said outer surface;
- whereby said cord provides a reservoir of said powder for migration to said surface.
2 more elements
Dependencies are inferred from the claim text.