Foldable stroller frame having three sections joined to and foldable around a common hub structure
US8517412B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 22, 2011 |
| Grant date | Aug 27, 2013 |
| Priority date | — |
| Expiry date | Sep 22, 2031 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB62B2205/22
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
A foldable stroller frame has three sections (a lower-front section, a lower-rear section, and an upper-rear section) joined to and foldable around a common hub structure. The hub structure includes two hubs located on the left and right sides of the stroller frame. In at least one of the hubs, a bracket structure is mounted to the lower-rear section and holds two gears which are attached to the lower-front section and upper-rear section, respectively. The two gears are engaged with each other, so that the lower-front section and upper-rear section rotate in synchrony with respect to the lower-rear section when the stroller frame is being folded. The hub also includes a releasable locking mechanism, which is controlled by a pull trigger located on the upper-rear section of the stroller near the push handles, for locking the stroller frame in the unfolded state.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.