Articulated rear fender for bicycles

An articulated rear fender for a bicycle comprising:

• a clamp releasably mountable to a seat post of said bicycle,
• a fender body mountable to said clamp,
• said clamp having opposed facing first and second halves releasably tightenable by a releasable tightener into opposed facing cooperation so that a semicircular first recess in a first end of said first half matches a semicircular first recess in a first end of said second half so as to form a cylindrical collar mountable around said seat post, and so that a generally cylindrical second recess in an opposite second end of said first half matches a generally cylindrical second recess in an opposite second end of said second half,
• said second recesses when mounted in said opposed facing relation forming a cylindrical receiving cavity having a longitudinal axis perpendicular to a longitudinal axis of said seat post, each said second recess having splines formed in a wall thereof, said splines parallel to said longitudinal axis of said receiving cavity, each said second recess having a notch in its wall, said notch opening from said second recess outwardly from said second end of each said first and second halves, said notches forming a receiving aperture into said receiving cavity when said second recesses are in said opposed facing relation,
• said fender body having mounted at a first end a cylindrical member cantilevered on a rigid arm from said fender body, said cylindrical member having teeth around said cylindrical member for releasably lockable mating of said teeth with said splines when
• said cylindrical member is mated into said receiving cavity and said arm is journalled through said receiving aperture,
• said fender body elongate and non-planar along its length so that a first portion of said fender body closest to said arm extends from said arm and angles downwardly relative to a line perpendicular to said longitudinal axis of said seat post when said fender body is mounted to said clamp and said clamp mounted to said seat post, and wherein a second portion of said fender body contiguous to said first portion extends from said first portion and is angled upwardly relative to said first portion,
• wherein said fender body is rotatably articulatable in a generally vertical plane between an angularly lowered position and an angularly elevated position about said longitudinal axis of said receiving cavity by selective rotation of said cylindrical member relative to said receiving cavity when mounting said cylindrical member in said receiving cavity.