Yieldable prop
US7334968B2 · kind B2 · utility
4Cited by
22References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 21, 2003 |
| Grant date | Feb 26, 2008 |
| Priority date | — |
| Expiry date | Feb 21, 2023 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21D15/325
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A yieldable prop having a first end and a second end including a first hollow conduit, a second conduit slidably received in the first hollow conduit, a clamp assembly positioned adjacent to the first hollow conduit and the second conduit, and at least one handle connected to the first hollow conduit and the clamp assembly. The prop further includes a bearing plate positioned at the first end of the yieldable prop, wherein the bearing plate is selected from a shape comprising planar and volcano.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.