Tools
US4223935A · kind A · utility
7Cited by
2References
5Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 17, 1979 |
| Grant date | Sep 23, 1980 |
| Priority date | — |
| Expiry date | Jan 17, 1999 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE04G21/162
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
The invention relates to a tool for lifting a component such as a building block and comprises a support having a contiguous lower abutment surface, a plurality of engaging members extending beneath the support and adapted to be entered into a recess in the component, at least one of the members being movable and a handle means movable with respect to the support and operatively connected with the movable engaging member, so that on lifting the handle the engaging members engage the adjacent wall of the recess with a force proportional to the weight of the component.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.