Patent ID: 8070175
Filing Date: 2011-12-06
Classification: B62K

Abstract:
1. A method of manufacture of a bicycle frame with a top tube with a front end and a rear end, a head tube with a top end and a lower end, a down tube with a front end and a rear end, a seat tube with a top end and lower end, the front end of the top tube connected to the top end of the head tube, the front end of the down tube connected to the lower end of the head tube, the top tube and down tube diverging away from each another as they extend rearwardly from the head tube, the rear end of the down tube coupled to the lower end of the seat tube, the rear end of the top tube top connected to the top end of the seat tube, the top tube, head tube, down tube and seat tube substantially forming a closed main frame loop, the frame comprises a sub assembly molded simultaneously as a single piece comprising the top tube, the head tube and the down tube with the rear end of the top tube open providing access through the top tube to the top end of the head tube and with the rear end of the down tube open providing access through the down tube to the lower end of the head tube, the method comprising: molding the sub assembly, manufacturing the remainder of the elements of the frame, and assembling the sub assembly and the remainder of the elements.