Gantry crane
US4378072A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jun 16, 1980 |
| Grant date | Mar 29, 1983 |
| Priority date | — |
| Expiry date | Jun 16, 2000 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB66C19/005
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
A gantry crane comprising a pair of spaced, parallel rectangular side frames each having top and bottom members and front and rear vertical members connected to the top and bottom members, a front cross beam rigidly connected to each of the side frames at the upper front corners thereof, and a rear cross beam pivotally connected to each of the side frames at the upper rear corners thereof, each of the side frames further including diagonal braces, ground engaging drive wheels mounted on the side frames at the lower corners thereof so that as the gantry crane traverses uneven ground, the wheels maintain ground contact as the rear cross beam pivots with respect to the side frames and the front cross beam absorbs the torsional stress.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.