Push-pull cart collection device and conversion assembly
US7571914B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 17, 2006 |
| Grant date | Aug 11, 2009 |
| Priority date | — |
| Expiry date | May 18, 2027 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S280/04
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
The present invention is a shopping cart collection device adapted to engage to first and second shopping carts and capable of pulling a first train of shopping carts extending from the first shopping cart and pushing a second train of shopping carts extending from the second shopping cart. The device comprises a motorized unit comprising a drive wheel, a first hitch and a second hitch. The first hitch is proximate a first side of the motorized unit and is adapted to engage the first shopping cart. The second hitch is proximate a second side of the motorized unit opposite the first side and is adapted to engage the second shopping cart.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.