Angular position transforming device for a bicycle saddle

An angular position transforming device for shifting angular position of a bicycle saddle relative to a seat post, the saddle having a front portion and a rear portion that extends from the front portion in a longitudinal direction, the seat post having opposite front and rear upright portions, and an anchoring head portion disposed above and interconnected upper parts of the front and rear upright portions, the head portion having opposite right and left anchoring walls that face in directions transverse to the front and rear upright portions, and a sliding wall transversely joining the right and left anchoring walls, the seat post further having an insert portion that extends downwardly and that is adapted to be inserted into a seat tube of the bicycle, said angular position transforming device comprising:

• a support frame including
• opposite right and left lug portions that extend rearwardly in said longitudinal direction and that are spaced apart from each other, said right and left lug portions being adapted to be mounted fixedly to the rear portion of the saddle and being adapted to be mounted pivotally on the anchoring head portion around a first pivot axis with the right and left anchoring walls disposed inboard to said right and left lug portions, respectively;
• and
• a front seat portion extending forwardly from said right and left lug portions in said longitudinal direction, and having an upper support wall that faces upwardly in a direction transverse to direction of said first pivot axis;
• means for releasably retaining angular positions of said right and left lug portions relative to the anchoring head portion between a position of use, where said releasable retaining means is adapted to engage the sliding wall at an uppermost position on the sliding wall, and a lifted up position, where said releasable retaining means is adapted to engage the sliding wall at a position lower than the uppermost position and opposite to the front upright portion relative to said first pivot axis;
• a detent lever having a fulcrum portion pivoted under said upper support wall around a second pivot axis parallel to said first pivot axis, an actuating arm extending longitudinally and outwardly of said upper support wall so as to be operated manually, and a catch arm disposed at an opposite side of said actuating arm relative to said fulcrum portion and adapted to releasebly engage holding means on the front upright portion when said right and left lug portions are in the position of use;
• and
• means for biasing said catch arm to engage the holding means on the front upright portion.