Cart puller with retaining cord mechanism
US6260643A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Oct 19, 1999 |
| Grant date | Jul 17, 2001 |
| Priority date | — |
| Expiry date | Oct 19, 2019 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB62B3/1404
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
A cart pulling system for pulling a line of nested carts including a reelable retaining cord mechanism and a hitch to engage the line of nested carts. The reelable retaining cord mechanism is a dual spindle system which is attached to a motorized cart-puller. Attached to the spindles is a retaining cord which extends around and engages the line of nested carts. The retaining cord is preferably slidable with respect to the nested carts to prevent the line of nested carts from binding when they turn. A hitch is also attached to the motorized cart-puller and has a set of stationary jaws and set of movable jaws which slidably engage the line of nested carts.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.