Ladder base plate apparatus
US5078231A · kind A · utility
Inventor
Key dates
| Filing date | May 14, 1991 |
| Grant date | Jan 7, 1992 |
| Priority date | — |
| Expiry date | May 14, 2011 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE06C7/42
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A base plate includes a plurality of plate members, each formed with abutting flanges that are in turn orthogonally oriented relative to one another to provide a continuous abutment surface for a plurality of ladder legs of an associated ladder. The structure includes pins directed through each corner of the free ends of the base plates, and may further be provided with tether lines, with a plurality of the tether lines utilizing adjusting means for fixedly anchoring the ladder to the plate structure. Further refinement of the organization includes the flanges in hingedly intercommunicating relationship relative to one another to permit interfolding of the structure for ease of transport and storage.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.