The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Nov. 12, 1991
Filed:
Nov. 07, 1988
Max Naeder, Duderstadt, DE;
Abstract
An artificial jointless foot comprises an incompressible core, preferably made of wood, the underside of which slopes upwards from the front to the rear and forms an upper connecting surface in the ankle region and which extends into the instep region of the foot with an extension decreasing in height towards the front, a heel wedge connected to the underside of the core and made of a soft plastic foam, with a skin-forming layer composed of a plastic foam and completely surrounding the arrangement comprising the core and heel wedge, with the exception of an upper connecting surface. The foot has good movement properties, while at the same time being of simple design and having desirable flexibility in the instep region. The core, beginning from its front edge on the connecting surface, extending into the instep region by an amount corresponding to less than half its length on the connecting surface. A flexible inner foot made of plastic foam extends into the toe region and is likewise enclosed by the skin-forming layer. The inner foot adjoins the front surface of the core and the front side of the heel wedge. The skin-forming layer is a soft, easily deformable plastic foam layer, the restoring forces of which are less than the restoring forces of the inner foot.