Apparatus and methods for imbedded rubber outer
View Patent ↗The present invention provides apparatus and methods for imbedding a durable outer layer of rubber in a second layer of rubber, polyurethane, or like material for use in various applications, including but not limited to shoe soles and tires. As depicted in FIG., the durable outer layer, which in the case of FIG. 4 is a shoe outsole, may comprise a plurality of lugs ( 2 ) connected with integral support bridges ( 3 ) imbedded in another rubber or rubber-like material ( 17 ). Alternatively, the durable outer layer may comprise a plurality of lugs anchored in the second layer of rubber, polyurethane or the like, using anchors, such as ribs or flanges, radiating from the perimeter of each lug.
1. A shoe sole, said shoe sole comprising:
a midsole comprising a first surface adapted for attaching to a bottom of a shoe upper and an exposed surface, wherein the exposed surface opposes the first surface of the midsole;
at least one outsole lug, wherein the at least one outsole lug comprises an imbedded end and an exposed end, wherein the imbedded end comprises a perimeter and further comprises an anchor extending radially from the perimeter, wherein at least a portion of the anchor underlies the exposed surface of the midsole; and
a plurality of ribs extending radially from the perimeter of the imbedded end of the at least one outsole lug, wherein at least a portion of an at least a first rib of the plurality of ribs underlies the exposed surface of the midsole.
2. The shoe sole of claim 1 , wherein an at least one rib of the plurality of ribs comprises a distal end, wherein the distal end of the at least one rib comprises a knob, and wherein the distal end is imbedded underneath the exposed surface of the midsole.
3. The shoe sole of claim 1 , wherein the anchor further comprises:
a flange extending from the perimeter of the imbedded end of the at least one outsole lug, wherein the flange is imbedded underneath the exposed surface of the midsole.
4. The shoe sole of claim 3 , wherein the flange further comprises:
a raised ridge.
5. The shoe sole of claim 3 , wherein the flange is perforated.
6. A shoe sole, said shoe sole comprising:
a midsole comprising a first surface adapted for attaching to a bottom of a shoe upper and an exposed surface, wherein the exposed surface opposes the first surface of the midsole; and
at least one outsole lug, wherein the at least one outsole lug comprises an imbedded end and an exposed end, wherein the imbedded end comprises a perimeter and further comprises an anchor extending from the perimeter, wherein the anchor underlies the exposed surface of the midsole, wherein the anchor further comprises a plurality of ribs extending radially from the perimeter of the imbedded end of the at least one outsole lug, and wherein an at least one rib of the plurality of ribs comprises a distal end, and wherein the distal end of the at least one rib comprises a knob.