Adjustable bicycle seat assemblies and methods of use

An adjustable height bicycle seat mounting assembly, comprising:

• an outer tube having a closed end;
• an inner tube having a closed end, the inner tube in telescoping arrangement with the outer tube;
• a bulkhead disposed in the inner tube having an orifice therethrough;
• an orifice seal adapted to open and close the orifice;
• a substantially incompressible fluid disposed within at least a portion of the outer tube and within at least a portion of the inner tube, the substantially incompressible fluid adapted to pass through the orifice when the orifice is in an open position;
• and
• a compressible gas disposed in at least one of the outer tube closed end and inner tube closed end, the compressible gas adapted to provide a biasing effect on the fluid when the orifice is in the open position to bias the inner and outer tubes towards an extended positioned.

A bicycle, comprising

• a frame;
• at least one wheel coupled to the frame to permit rotational movement of the wheel relative to the frame;
• and
• a seat coupled to the frame with an adjustable height seat mounting assembly, the seat mounting assembly comprising:
• first and second tubes in telescoping arrangement, the first tube coupled to the bicycle frame and the second tube coupled to the seat;
• a bulkhead disposed in an inner one of the first and second tubes, the bulkhead having an orifice therethrough;
• a sealing device adapted to seal the orifice when in a first position, and adapted to open the orifice when in a second position;
• and
• a sealing device controller having at least a portion disposed outside the first and second tubes, the sealing device controller adapted to control the sealing device position between at least the first and second positions;
• wherein the first and second tubes are axially adjustable relative to one another by regulating a flow of a fluid disposed in the first and second tubes through the orifice.

A method of adjusting a bicycle seat height, the method comprising:

• providing a bicycle having an adjustable height bicycle seat mounting assembly, the seat mounting assembly comprising;
• first and second tubes in telescoping arrangement, the first tube coupled to a bicycle frame and the second tube coupled to a bicycle seat;
• a bulkhead disposed in one of the first and second tubes, the bulkhead having an orifice therethrough;
• a rod extending through the orifice and coupled to a movement device disposed near an end of the second tube;
• a fluid disposed in a portion of the first and second tubes and adapted to flow through the orifice when the rod is in an open position;
• and
• a gas disposed in a closed end portion of at least one of the first and second tubes, the gas adapted to create a biasing effect on the fluid when the orifice is in the open position to bias the first and second tubes towards an extended position;
• moving the movement device to position the rod in the open position;
• releasing the movement device to seal the orifice when the seat is at a desired location.