Adjustable lift assembly for hand trucks
US8840121B2 · kind B2 · utility
Inventor
Key dates
| Filing date | Oct 4, 2012 |
| Grant date | Sep 23, 2014 |
| Priority date | — |
| Expiry date | Oct 4, 2032 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB62B2203/10
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
A system is provided for temporarily converting a conventional hand truck to provide an adjustable platform. The system may comprise a shelving unit and a control unit, where the control unit is configured to raise and lower the shelving unit on the frame of the transporting device. The shelving unit may comprise a platform for supporting removable items thereon, and a back plate configured to engage a portion of the transporting device frame, where the back plate comprises a plurality of rollers that minimize lateral movement of the shelving unit when it is being raised or lowered during operation. The control unit may comprise a drive unit and a cable system configured to permit the drive unit to direct movement of the shelving unit, the cable system comprising at least one cable, at least one pulley, and a winch upon which a portion of the cable may be radially wound.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.