Patent ID: 8328454

Claim:
An adjustable assembly for a bicycle, comprising: a first tubular support having an interior surface; a second tubular support slidably positioned longitudinally within the first tubular support, said second tubular support being adjacent to at least a portion of the interior surface of the first support; wherein one of the first support and the second support is adapted to attach to a first bicycle portion, and wherein the other of the first support and the second support is adapted to attach to a second bicycle portion; wherein the second support comprises a radially flexible expansion portion disposed proximate a lower end thereof, wherein the expansion portion is radially expandable relative to a longitudinal axis of the second support, said expansion portion being movable between a radially expanded position and a radially retracted position; wherein an outer surface of the expansion portion engages at least a portion of the interior surface of the first support when the expansion portion is in the radially expanded position; and wherein when said outer surface of said expansion portion is moved to the radially retracted position, the first support is longitudinally movable relative to the second support; and a retention assembly coupled to the second support, said retention assembly being longitudinally movable between a locked position, in which the retention assembly is at least partially within an interior space of the expansion portion and the retention assembly blocks the expansion portion from moving to the radially retracted position, and an unlocked position, in which the expansion portion may selectively move to the radially retracted position; and a biasing assembly operatively coupled within the first support, said biasing assembly exerting an upwardly directed force on the expansion portion such that when the retention assembly is in the unlocked position, the expansion portion is permitted to move to the radially retracted position and the second support can be raised relative to the first support; a resilient member coupled to the retention member, said resilient member biasing the retention assembly downwardly in a direction that is generally opposite of the upwardly directed force of the biasing assembly, such that the retention assembly is normally biased into the locked position; and a connector operatively coupled to the retention assembly, whereby movement of the connector by a user moves the retention assembly between the locked and unlocked positions.