Folding ball trolley having minimized volume
US9168938B2 · kind B2 · utility
Inventor
Key dates
| Filing date | May 7, 2013 |
| Grant date | Oct 27, 2015 |
| Priority date | — |
| Expiry date | Feb 11, 2034 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB62B2205/06
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
A folding ball trolley having a minimized volume has a frame, a bag and multiple resilient elements. The frame has four stand rods, four top seats, four sliding seats, four wheels, four connecting rod assemblies and four mounting rods. The bag connects to the mounting rods, and the mounting rods pivotally connect to the stand rods. Accordingly, the mounting rods can be rotated relative to the stand rods, such that the mounting rods do not protrude upward to occupy too much space when the ball trolley is folded. Besides, the frame is braced by the resilient elements so a user does not have to stretch his hands between the rods when folding the ball trolley, thereby preventing the hands from being clamped.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.