Manually height adjustable and rotatable steering assembly for bicycles
First Claim
1. A steering assembly for a bicycle comprising;
- a front wheel fork having an integral upwardly extending steerer tube, headset bearings coaxial with said steerer tube, a handlebar assembly, a primary locking system and a secondary retention system coupling said handlebar assembly to said steerer tube, wherein relative movement between the handlebar assembly and the steerer tube can only be accomplished after said primary locking system is first unlocked and then the secondary retention system is held manually disengaged during said relative movement between said handlebar assembly and said steerer tube.
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Accused Products
Abstract
An apparatus and method of securing a bicycle handlebar stem to the front wheel fork steerer tube with handlebar height adjustability and rotation of the handlebar and stem for easy storage. A steering assembly is provided where the handlebar stem is moveably fastened to the front fork steerer tube using a manually operated primary locking device and requiring a secondary action to allow for movement in the form of either height adjustment, or rotation, or both. The connection between the handlebar stem and the front fork steerer tube can be on the interior or the exterior of the front fork steerer tube. With the interior connection, the steerer tube can be elongated to extend above the top of the headset bearings where it is fitted with a collar for clamping onto the internally mounted stem. The handlebar stem and fork steerer tube are fitted with corresponding octagonal or other cross sectional shapes, or a safety tracking system. For bicycles equipped with handlebar stems which clamp to the outside of the fork steerer tube, the handlebar stem is equipped with a safety lock and can be rotated for storage with no height adjustability.
41 Citations
16 Claims
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1. A steering assembly for a bicycle comprising;
- a front wheel fork having an integral upwardly extending steerer tube, headset bearings coaxial with said steerer tube, a handlebar assembly, a primary locking system and a secondary retention system coupling said handlebar assembly to said steerer tube, wherein relative movement between the handlebar assembly and the steerer tube can only be accomplished after said primary locking system is first unlocked and then the secondary retention system is held manually disengaged during said relative movement between said handlebar assembly and said steerer tube.
- View Dependent Claims (2, 3, 4, 5)
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6. A steering assembly for a bicycle comprising;
- a front wheel fork having an integral upwardly extending, non folding steerer tube, headset bearings coaxial with said steerer tube, a stem for mounting a handlebar assembly, a primary locking assembly of said handlebar assembly to said non folding steerer tube and comprising a shaped inner surface of an outer member adapted to be clamped to a shaped outer surface of said stem mounted concentrically inside, wherein both of said shaped surfaces are not round, and could not be made round by the removal of a notch or protrusion.
- View Dependent Claims (7, 8, 9, 10, 11, 12, 13, 14, 15, 16)
Specification