Bicycle frame
Patent 5054802 Issued on October 8, 1991. Estimated Expiration Date: 
September 26, 2010. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
September 26, 2010. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent References 2495859 2827306 3030124 Heavy duty dirt bicycle and frame therefor Foldable bicycle Internal cable arrangement for bicycle frame Patent #: 4768798 InventorAssigneeApplicationNo. 588148 filed on 09/26/1990US Classes:280/279, Front forks and heads280/281.1, Frames and running gear280/288.3Hollow shell framesExaminersPrimary: Marmor, Charles A.Assistant: Bompey, Mitchell Attorney, Agent or FirmForeign Patent References
International ClassB62K 019/18AbstractA rugged but inexpensive bicycle frame comprises a tubular head post welded to the flattened forward end of a relatively large diameter tubular crossbar. The rear end of the crossbar is flattened laterally and provided with a concave rear edge. A tubular rear fork has a rounded bridge portion which is fitted to the crossbar rear edge so that the nominal plane of the rear fork is perpendicular to the headpost. Welds permanently connect the front and rear ends of the crossbar to the headpost and rear fork bridge portion respectively. There are openings in the top and bottom walls of the crossbar just forward of the rear end thereof for receiving a tubular seat post so that the lower end of set seat post extends appreciably below the crossbar. Welds permanently connect the seat post to the crossbar. A short tube is welded to the lower end of the seat post to support the pedal crank. | |
