Transporting loads
US8006985B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 8, 2007 |
| Grant date | Aug 30, 2011 |
| Priority date | — |
| Expiry date | Jul 30, 2028 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB65D2519/0099
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
A load-carrying dolly having four wheels (6, 7) adjacent the corners of its platform (1) is rendered immobile by conversion to a pallet-like condition by lowering bearers (9, 10, 11) into contact with the floor or ground (24) and then raising the platform (1) slightly to raise the wheels (6, 7) clear of the floor or ground by means of either of two pedals (25, 32), one below each end of the platform (1), with linkage (of either of two forms, not shown) to bars (23) connecting in “slave” pairs of toggle links (20, 21) by means of which the bearers are suspended through beams (33) connecting upward extensions (12, 13, 14) at the ends of the bearers (9, 10, 11), the toggle links in each pair becoming locked by mating abutments (28) coming together when the links have passed slightly beyond in-line position, the mechanical advantage of the depressed pedal (25 or 32) being amplified by that of the pairs of toggle links when passing through in-line positions.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.