Bicycle
US9090302B2 · kind B2 · utility
Inventor
Key dates
| Filing date | Nov 18, 2013 |
| Grant date | Jul 28, 2015 |
| Priority date | — |
| Expiry date | Jan 30, 2034 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB62B2206/006
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
A four wheeled cycle including a frame, a load carrying base, two front wheels, two rear wheels, a steering mechanism, a brake mechanism, a pedal mechanism, a chain drive mechanism, and a saddle unit. The frame is a retractable frame, including a rear support frame, a down tube, a transverse tube, and at least two telescopic casing tube assemblies that are arranged side by side. Each of the telescopic casing tube assemblies includes a front casing tube, a middle rod, and a rear casing tube. The load carrying base includes a cross bar, a front connecting rod, a left connecting rod, a right connecting rod, a rear connecting rod and internally hinged bars for linking the connecting rods. The two front wheels are respectively connected to two ends of the cross bar through a bearing at the top ends of a front fork.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.