Slip-resistant sole
Patent 4777738 Issued on October 18, 1988. Estimated Expiration Date: 
August 12, 2006. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
August 12, 2006. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent ReferencesInventorsAssigneeApplicationNo. 06/894751 filed on 08/12/1986US Classes:36/32R, Rubber36/116, For walking or sliding on shifting media36/59CModified tread surfaceExaminersPrimary: Meyers, Steven N.International ClassesA43B 13/14 (20060101)A43B 13/22 (20060101) A43B 5/00 (20060101) A43B 5/08 (20060101) AbstractA slip-resistant shoe sole comprising an outsole layer having a bottom surface defining a region of contact between the sole and the ground, the outsole layer bearing a plurality of channels opening onto the bottom surface to define a pattern of elongated gaps across the contact region, the ratio of the area of the gaps to the surface area of the contact region and the configuration of the gaps being arranged to effectively cause liquid between the contact region and the ground to be conducted away while enhancing the slip resistance produced by the contact region engaging the ground. | |
