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:
Jun. 08, 1993
Filed:
May. 07, 1990
Applicant:
Inventors:
Malcolm G Blissett, Grand Rapids, MI (US);
Raymond M Fredericksen, Okemos, MI (US);
Assignee:
Wolverine World Wide, Inc., Rockford, MI (US);
Primary Examiner:
Int. Cl.
CPC ...
A43B / ;
U.S. Cl.
CPC ...
36 28 ; 36 2 / ; 36 3 / ;
Abstract
A walking shoe and walking shoe sole with the sole heel portion and forefoot portion having integral resilient flexible compression protrusions having maximum extension at the rear edge of the protrusion, curving upwardly forwardly therefrom, and bounded by a groove that extends along both side edges and across the rear vertically offset edge of the protrusion, the groove increasing in depth toward the rear of the protrusion. The rear of at least the forefoot protrusion is undercut. The upper surface of the sole has at least one transverse cavity just forwardly of the rear edge of the protrusion.