Patent · US Active

Attack tool

US7445294B2 · kind B2 · utility

59Cited by

118References

20Claims

0Family size

Inventors

David R. Hall · Provo, US
Ronald B. Crockett · Payson, US
Jeff Jepson · Spanish Fork, US

Key dates

Filing date	Aug 11, 2006
Grant date	Nov 4, 2008
Priority date	—
Expiry date	Aug 11, 2026

Classification

Technology area (CPC E)Fixed Constructions
CPC primaryE21C35/1837
WIPO fieldCivil engineering
WIPO sectorOther fields

Abstract

In one aspect of the invention, an attack tool is disclosed which comprises a wear-resistant base suitable for attachment to a driving mechanism. The wear resistant base has a shank and metal segment. A cemented metal carbide segment is bonded to the metal segment opposite the shank. At least one hard insert is bonded to the metal segment proximate the shank, wherein the insert has a hardness greater than 60 HRc.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.