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US 6,280,815 B1Granted
Custom-formable shoe insert
Assignee3M Innovative Properties Company
InventorsDean A. Ersfeld, Richard E. Anderson, Michael L. Ruegsegger, Kelly T. McGurran, Richard A. Mallo
Life of this patent
Estimating the term…
Abstract
A custom-formable shoe insert is disclosed that comprises (1) a conformable substrate layer, where at least a portion of the substrate layer is impregnated with a storage-stable, settable resin that set after exposure to an activator; and (2) an outer layer that is impervious to the settable resin but at least a portion of which is pervious to the activator.
Claims3
A custom-formable shoe insert, comprising:
- a conformable substrate layer having first and second portions, wherein the first portion is impregnated with a first settable resin and the second portion is impregnated with a second settable resin, wherein the first and second settable resins set after exposure to an activator and the first settable resin allows the substrate layer to be compressed from about 35 to 75% after setting and the second settable resin allows the substrate layer to be compressed from about 9 to 25% after setting;
- and
- an outer layer that is impervious to the first and second settable resins but at least a portion of which is pervious to the activator.
A custom-formable shoe insert, comprising:
- a conformable substrate layer, wherein at least a portion of the substrate layer is impregnated with a storage-stable, settable resin that set after exposure to an activator, the settable resin comprises microcapsules to achieve a cooling effect, and the microcapsules comprise urea formaldehyde containing octadecane;
- and
- an outer layer that is impervious to the settable resin but at least a portion of which is pervious to the activator.
Dependencies are inferred from the claim text.