Adjustable seatpost
First Claim
1. A seat post assembly for a bicycle, the seat post assembly comprising:
- a first tube having a first distal end;
a second tube having a second distal end, the first tube and second tube movable relative to one another to establish a distance between the first distal end and the second distal end along a tube axis;
a first pressure chamber having a loaded pressure proportional to a load applied along the tube axis;
a second pressure chamber having a second pressure not proportional to the load;
a flow path connecting the first pressure chamber and the second pressure chamber; and
a valve having an isolator disposed along the flow path and configured to move between a closed position closing the flow path and an open position opening the flow path between the first pressure chamber and the second pressure chamber,wherein the isolator is configured to nullify any resultant force produced by the loaded pressure of the first pressure chamber acting on the isolator.
1 Assignment
0 Petitions
Accused Products
Abstract
A seat post assembly for a bicycle has a first tube with a first distal end and a second tube with a second distal end. The first and second tubes are movable relative to one another to establish a distance between the first and second distal ends. A first pressure chamber has a loaded pressure proportional to a load applied along the tube axis. A second pressure chamber has a second pressure not proportional to the load. A flow path connects the first and second pressure chambers. A valve is disposed along the flow path and is configured to move between a closed position closing the flow path and an open position opening the flow path between the first and second pressure chambers. An isolator of the valve is configured to nullify any resultant force produced by the loaded pressure of the first pressure chamber acting on the isolator.
251 Citations
27 Claims
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1. A seat post assembly for a bicycle, the seat post assembly comprising:
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a first tube having a first distal end; a second tube having a second distal end, the first tube and second tube movable relative to one another to establish a distance between the first distal end and the second distal end along a tube axis; a first pressure chamber having a loaded pressure proportional to a load applied along the tube axis; a second pressure chamber having a second pressure not proportional to the load; a flow path connecting the first pressure chamber and the second pressure chamber; and a valve having an isolator disposed along the flow path and configured to move between a closed position closing the flow path and an open position opening the flow path between the first pressure chamber and the second pressure chamber, wherein the isolator is configured to nullify any resultant force produced by the loaded pressure of the first pressure chamber acting on the isolator. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16)
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17. A seat post for a bicycle, the seat post comprising:
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a first tube having a first distal end; a second tube having a second distal end, the first tube and second tube movable relative to one another along a tube axis to establish a height of an attachment portion of a seat post head for attaching a bicycle seat, the attachment portion carried on the second distal end; and a battery pack including a battery and a battery housing, the battery housing configured for removable attachment of the battery pack to the attachment portion and configured to provide power to operate a height adjustment system of the seat post. - View Dependent Claims (18, 19, 20, 21, 22, 23, 24, 25, 26, 27)
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Specification