Flex post fence
US5299781A · kind A · utility
35Cited by
4References
11Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 10, 1991 |
| Grant date | Apr 5, 1994 |
| Priority date | — |
| Expiry date | Jul 10, 2011 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE01F7/045
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A boulder rolling down a slope is caught with an energy absorbing device to dissipate a portion of its kinetic energy and to redirect the boulder downwardly into the ground to absorb the rest of the kinetic energy and to stop it. This is accomplished by temporary deformation of joints in the energy absorbing device to dissipate the kinetic energy and redirect the boulder downwardly into the ground. The energy absorbing device will return substantially to its undeformed state for intercepting additional boulders which may roll down the slope.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.