Bicycle seat attachment assembly

A seat attaching assembly for attaching a bicycle seat to a seat post, the seat attaching assembly comprising:

• a) a lower seat clamp being selectably moveable relative to a post head member about a pivot axis to change an orientation of the lower seat clamp, the lower seat clamp comprising:
• i. a mounting portion having a bearing surface configured to engage a corresponding cradle portion of the post head member, the bearing surface defining a rotation perimeter centered about the pivot axis;
• ii. a first channel configured to receive a first seat rail of a bicycle seat and extending along a first channel axis;
• iii. a second channel configured to receive a second seat rail of a bicycle seat and extending along a second channel axis;
• b) an upper seat clamp comprising:
• i. a central portion overlying the mounting portion;
• ii. a first extension portion disposed on a first side of the central portion and having a first retainer surface overlying and facing the first channel to retain the first seat rail within the first channel and having a first apex;
• iii. a second extension portion disposed on a second side of the central portion and having a second retainer surface overlying and facing the second channel to retain the second seat rail within the second channel and having a second apex;
• c) an upper plane containing both the first apex and second apex and being substantially parallel to and offset below the pivot axis;
• d) at least a first fastener for securing the upper seat clamp to the post head member and inhibiting movement of the lower seat clamp relative to the post head member, the first fastener extending along a first fastener axis, the first fastener axis being outside the rotation perimeter;
• and
• e) a channel plane containing both the first channel axis and the second channel axis, the channel plane either intersecting or being disposed below the bearing surface.