Patent · US Active

Pick assembly, bit assembly and degradation tool

US9551217B2 · kind B2 · utility

3Cited by

19References

20Claims

0Family size

Assignees

Element Six Limited · IE
ELEMENT SIX ABRASIVES S.A. · LU

Inventors

Bernd Heinrich Ries · Hünfeld, DE
Frank Friedrich Lachmann · Hünfeld, DE
Robert Fries · Rosebank, ZA

Key dates

Filing date	Aug 29, 2013
Grant date	Jan 24, 2017
Priority date	—
Expiry date	Aug 29, 2033

Classification

Technology area (CPC E)Fixed Constructions
CPC primaryE21C35/191
WIPO fieldCivil engineering
WIPO sectorOther fields

Abstract

A pick assembly is provided, comprising a bit assembly and a holder assembly; the bit assembly comprising a bit support body, a fastener mechanism and a deflectable member, cooperatively configured such the deflectable member can be deflected responsive to the progressive coupling of the bit support body to the fastener mechanism. The holder assembly comprises a holder body and is configured for accommodating and retaining the bit assembly by interference means. The holder assembly and bit assembly are cooperatively configured such that the retention of the bit assembly by the holder assembly by interference means can be progressively increased responsive to the progressive coupling of the bit support body with the fastener mechanism when the bit assembly is accommodated by the holder assembly, operative to prevent substantial movement of the bit support body relative to the holder body in use.

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