Retention system

US7946656B2 · kind B2 · utility

Assignee

• SCHLUMBERGER TECHNOLOGY CORPORATION · US

Inventors

• David R. Hall · Provo, US
• Scott Dahlgren · Alpine, US
• Jonathan Marshall · Provo, US
• Italo Elqueta · Lehi, US
• Tyson J. Wilde · Provo, US
• Christopher Durrand · Provo, US

Key dates

• Filing date: Jun 9, 2008
• Grant date: May 24, 2011
• Expiry date: Jun 2, 2029

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10T29/49826
• WIPO field: Civil engineering
• WIPO sector: Other fields

Abstract

A retention assembly, comprises a carbide bolster comprising a cavity formed in its base end. A shaft comprises an inserted end disposed within the cavity. The shaft is disposed within a hollow shank which comprises a first end contacting the bolster and a loaded end in mechanical communication with the shaft. Wherein, the inserted end is brazed to an inner surface of the cavity.