Sport boot liner and method for making same
US5673448A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | May 4, 1995 |
| Grant date | Oct 7, 1997 |
| Priority date | — |
| Expiry date | May 4, 2015 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA43B19/00
- WIPO fieldOther consumer goods
- WIPO sectorOther fields
Abstract
A liner for a sport boot shell and a method for making a custom fitted liner for a sport boot, are disclosed. The liner is designed to be worn inside a boot shell. In a preferred embodiment the liner includes inner and outer of flaps which wrap in opposite directions across a wearer's shin and forms a compound curve in a region in front of the wearer's ankle. The liner including flaps may be made from a single piece of thermoplastic foam material of uniform thickness. The design of the liner prevents the cuff of the liner from loosening around the wearer's shin and calf when the wearer's leg is flexed forward at the ankle. The shell can therefore be worn more loosely than is necessary with a boot liner of conventional design. The liner may be made by making an unfitted liner from a sheet of thermoformable material. The unfitted liner has a forwardly facing opening and wings extending forwardly on either side of opening. The unfitted liner is then heated to above the thermoforming temperature of the material and simultaneously fitted to the shell and the wearer's foot and leg by the steps of: placing the wearer's foot into the unfitted liner; forming flaps by wrapping the wings acro…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.