All-weather tire

A tire, comprising:

• an inner shell having a hollow interior space;
• an outer shell disposed radially outward from the inner shell;
• at least three pump assemblies disposed circumferentially around the inner shell and spaced apart relative to each other, wherein each pump assembly has a tube portion and is selectively actuatable between an expanded state in which the tube portion extends radially outward beyond the outer shell and a compressed state in which the tube portion does not extend radially outward beyond the outer shell;
• and
• at least three valve assemblies disposed circumferentially around the inner shell and spaced apart relative to each other, wherein each valve assembly is coupled to a respective pump assembly by an inlet line and an outlet line and to the interior space of the inner shell, and wherein the at least three valve assemblies are configured to selectively direct fluid from the tube portions of the at least three pump assemblies to the interior space of the inner shell and from the interior space of the inner shell to the tube portions of the at least three pump assemblies and to selectively actuate the at least three pump assemblies between the expanded state and the compressed state, wherein the inlet line includes a first one-way check valve configured to direct the fluid from the tube portion of the respective pump assembly to the valve assembly, and wherein the outlet line includes a second one-way check valve configured to direct the fluid from the valve assembly to the tube portion of the respective pump assembly.

A self-inflating tire assembly, comprising:

• a tire having:
• an inner shell defining a hollow interior space,
• an outer shell disposed radially outward from the inner shell,
• at least one pump assembly having a tube portion, wherein the at least one pump assembly is selectively actuatable between an expanded state in which the tube portion extends radially outward beyond the outer shell and a compressed state in which the tube portion does not extend radially outward beyond the outer shell, and
• at least one valve assembly coupled to the at least one pump assembly by a plurality of conduits, wherein the at least one valve assembly is configured to selectively direct fluid from the at least one pump assembly, through a first conduit, and to the interior space of the inner shell and from the interior space of the inner shell, through a second conduit, and to the at least one pump assembly and to selectively actuate the at least one pump assembly between the expanded state and the compressed state,
• wherein the tube portion includes a pinch point such that when the at least one valve assembly is actuated, the tire's engagement with a road surface compresses the tube portion and forces the fluid out of a forward outlet of the tube portion ahead of the pinch point and causes a compressed portion of the tube portion rearward of the pinch point to expand and create a vacuum that draws the fluid into the tube portion through the at least one valve assembly.