Abstract:
A method of assembling an air pump in a tire is provided including: opening an axial air passageway of an elongate flexible air tube at one end; inserting one by one a plurality of one-way check valves into the air passageway from the one end to form an axial array of spaced apart check valves along the air passageway, each check valve having an external nominal width greater than a nominal width of the air tube passageway; establishing a press fit engagement between each check valve and air tube internal sidewalls defining the air passageway to place each check valve at a respective preferred position within the air passageway; retaining the check valves in the respective preferred positions within the air passageway by radial pressure from the air tube internal sidewalls and closing the one end of the flexible air tube.
Abstract:
A method of assembling an air pump in a tire is provided including: opening an axial air passageway of an elongate flexible air tube at one end; inserting one by one a plurality of one-way check valves into the air passageway from the one end to form an axial array of spaced apart check valves along the air passageway, each check valve having an external nominal width greater than a nominal width of the air tube passageway; establishing a press fit engagement between each check valve and air tube internal sidewalls defining the air passageway to place each check valve at a respective preferred position within the air passageway; retaining the check valves in the respective preferred positions within the air passageway by radial pressure from the air tube internal sidewalls and closing the one end of the flexible air tube.
Abstract:
An elongate air tube is positioned within a tire sidewall cavity in contacting internal engagement with the tire sidewall to form an assembly. The air tube includes an internal elongate air passageway and wing projections projecting in opposite directions at an axially inward body portion. The wing projections seat within cavity pockets to retain the air tube within the cavity. The air tube body operatively compresses responsive to impinging stress forces from the tire sidewall against the air tube body, whereby the air tube body reconfiguring from an expanded unstressed configuration into a compressed configuration to constrict the air passageway. The air tube body decompresses into the expanded configuration upon reduction of the impinging stress forces against the air tube body.
Abstract:
An air maintenance tire and air pump assembly is provided including a tire and an elongate tubular air passageway enclosed within a flexing region of a tire sidewall. A plurality of check valve devices are spaced apart and positioned along the air passageway into multiple air passageway segments. A check valve membrane opens to allow pressurized air to directionally pass through the check valve device from an upstream passageway segment to a downstream passageway segment and closes to prevent air from passing in an opposite direction through the check valve from the downstream segment to the upstream segment.
Abstract:
An elongate air tube is positioned within a tire sidewall cavity in contacting internal engagement with the tire sidewall to form an assembly. The air tube includes an internal elongate air passageway and wing projections projecting in opposite directions at an axially inward body portion. The wing projections seat within cavity pockets to retain the air tube within the cavity. The air tube body operatively compresses responsive to impinging stress forces from the tire sidewall against the air tube body, whereby the air tube body reconfiguring from an expanded unstressed configuration into a compressed configuration to constrict the air passageway. The air tube body decompresses into the expanded configuration upon reduction of the impinging stress forces against the air tube body.