Repositionable hand truck
US4762333A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jan 5, 1987 |
| Grant date | Aug 9, 1988 |
| Priority date | — |
| Expiry date | Jan 5, 2007 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB62B2301/10
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
A two-wheeled hand truck incorporates an elongate upright frame, mounted by a pair of wheel support brackets to supporting wheels. Handles or other graspable surfaces are provided at the upper end of the frame. The wheel-supporting brackets are pivotally connected to the frame in a manner to permit movement of the wheels from a first load-supporting position in which the wheels are adjacent the lower end of the frame for supporting loads with a relatively lower center of gravity, to a second load-supporting position in which the wheels and axle are moved materially rearward for supporting loads with a relatively higher center of gravity. Yieldable, pressure-exerting mechanism operating through moment arms on opposite sides of the brackets pivots releasably lock the wheel structure in each of its positions.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.