Patent ID: 7393125
Filing Date: 2008-07-01
Classification: B62K,B62M

Abstract:
1. A bicycle frame comprising: (a) a head tube attached to a proximal end of a top tube, said top tube having an opening, and said top tube having a recess; (b) said recess defined by two sidewalls of the top tube, a down tube, and a seat tube; (c) said top tube sidewalls so configured to define a top sidewall edge including a low-cut top edge so as to form two inclined upward edges at or near the proximal and distal ends of the top tube; (d) said down tube having a proximal end and a distal end, and is further attached at the proximal end to the head tube; (e) said seat tube having a proximal end and a distal end, wherein the seat tube is connected to the distal end of top tube and the distal end of the down tube; (f) power supply unit comprising an engaging frame having a proximal end and a distal end and so configured to cooperatively engage the top tube opening, wherein said opening provides access to the recess in the top tube, further, said engaging frame possess a plurality of engaging frame sidewalls, wherein said engaging frame side walls define a main space; (g) the main space further includes an end plate extending from the distal end of the engaging frame, and a U-shaped portion, extending from the proximal end of the engaging frame, each of the end plates and the U-shaped portions include an inclined lower edge which is matched with and supported by the inclined upward edge of the top tube sidewall edge defining the recess; (h) the engaging frame includes a chamber defined in said proximal end or said distal end thereof and a control box received in the chamber; (i) a battery is removably engaged with said main space defined in the engaging frame, further, the battery is electrically connected with the control box.