Orthopaedic footwear
First Claim
1. An article of orthopedic footwear adapted to be selectively modified to conform to the foot of the wearer having a sole, an upper sheet of thermosoftening material secured to the sole, the upper sheet having two edges permanently joined at a seam, strip of thermosoftening material having edges that are welded to the outer surface of the upper sheet covering the seam, the article having means allowing trimming of the article to selectively modify the article to conform to the foot of the wearer and to retain the structural integrity and modified shape of the article when so modified.
0 Assignments
0 Petitions
Accused Products
Abstract
An article of orthopaedic footwear comprises an upper of thermosoftening plastics material, e.g. a vinyl polyer, having a lining of resilient expanded thermosoftening plastics material of closed cell construction, e.g. an expanded cross-linked polyethylene. The upper has an autogenously welded seam covered externally by a strip of thermosoftening plastics material, e.g. a vinyl polymer, autogenously welded to the upper on both sides of the seam, e.g. by longitudinal and/or transverse welds. The article can be shaped by forming and/or cutting the upper.
-
Citations
9 Claims
- 1. An article of orthopedic footwear adapted to be selectively modified to conform to the foot of the wearer having a sole, an upper sheet of thermosoftening material secured to the sole, the upper sheet having two edges permanently joined at a seam, strip of thermosoftening material having edges that are welded to the outer surface of the upper sheet covering the seam, the article having means allowing trimming of the article to selectively modify the article to conform to the foot of the wearer and to retain the structural integrity and modified shape of the article when so modified.
-
4. The article of claim 4 wherein the lining is made of an expanded cross-linked polyethylene.
-
9. An article of orthopedic footwear adapted to be selectively modified to conform to the foot of the individual wearer comprising a sole;
- an upper of vinyl polymer plastic material secured to the sole and formed with an autogenously welded seam at the heel of the article;
a backing of thermosoftening textile material bonded to the upper;
a liner of expanded cross-linked plastic material bonded to the backing;
a strip of vinyl polymer plastic material autogenously welded to the outer surface of the upper and covering the seam;
the weld including a longitudinal weld along each longitudinal edge of the strip and a plurality of transverse welds spaced along the strip forming a plurality of cavities between the upper sheet and the strip between the transverse welds and forming a plurality of transverse ridges along the inner surface of the heel area of the article to grip the foot of the wearer, the transverse welds forming means to allow selective modification of the article by trimming along a weld and retaining the structural integrity of the trimmed article;
a removable insole having a top layer of low density expanded cross-linked plastic material, and a bottom layer of high density plastic material; and
means defining a slit in the instep area of the upper to aid in putting on and removing the footwear and means for securing the slit in a closed condition during wearing of the footwear.
- an upper of vinyl polymer plastic material secured to the sole and formed with an autogenously welded seam at the heel of the article;
Specification