Shaped inserts with increased retention force
US7416035B2 · kind B2 · utility
1Cited by
21References
30Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 12, 2004 |
| Grant date | Aug 26, 2008 |
| Priority date | — |
| Expiry date | Apr 2, 2025 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B10/16
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A shaped insert that includes a top portion, and a grip length, wherein the grip length is modified to have a non-uniform cross sectional area is disclosed. In another case, a shaped insert includes a top portion, and a grip length, wherein the grip length is modified such that the insert is non-cylindrical. In another case, a shaped insert includes a top portion, and a grip length, wherein the grip length is coated in a non-uniform manner.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.