A fluid and power provision apparatus (10) is provided. The apparatus (10) includes a power provision device (90) and a pump assembly (100). The pump assembly (100) includes a motor (150), a transmission system (200), a piston assembly (300), and a collar ...

An air maintenance tire and pump assembly is disclosed. The assembly comprises a tire having a tire cavity, first and second sidewalls extending from first and second tire bead regions, respectively, to a tire tread region; an elongate substantially annula...

The present invention provides a cylindrical lock that is capable of being changed between a locked state and an unlocked state. The lock comprises: a hollow cylindrical collar (2) that has an axis (100) and bears a plurality of inwardly facing projections...

A self-inflating tire assembly (10) is disclosed. It comprises a tire (12) having a tire cavity (30), first and second sidewalls (32) extending respectively from first and second tire bead regions (34) to a tire tread region (38), a passageway (43) in the ...

A tire system comprising a tire having a tire carcass (12), a tire cavity (30) and compression actuator means (19) mounted to the tire carcass (12) for compressing air for delivery to the tire cavity (30) is disclosed. The compression actuator means (19) c...

A self-inflating tire includes a tire cavity (40), first and second sidewalls (30, 32) extending respectively from first and second tire bead regions (34, 36) to a tire tread region (38), and an air tube (42) connected to the tire (12) and defining an air ...

A self-inflating pneumatic tire has a cavity (40), first and second sidewalls (30, 32) extending respectively from first and second tire bead regions (34, 36) to a tire tread region (38). The first sidewall (30) has at least one bending region (196, 198) o...

To provide an automatic air supply mechanism for a pneumatic tire which can automatically supply air to a pneumatic tire by rotation of the pneumatic tire with respect to an axle when the air pressure in the pneumatic tire becomes a prescribed value or low...