Patent · US Active

Core barrel restraint

US8662204B2 · kind B2 · utility

0Cited by

11References

20Claims

0Family size

Assignee

Longyear TM, Inc. · US

Inventors

Emil Kolev · McLaren Vale, AU
Nathan Kaesler · Parramatta, AU

Key dates

Filing date	May 25, 2011
Grant date	Mar 4, 2014
Priority date	—
Expiry date	Apr 13, 2032

Classification

Technology area (CPC E)Fixed Constructions
CPC primaryE21B25/005
WIPO fieldCivil engineering
WIPO sectorOther fields

Abstract

A core barrel restraint adapted to prevent inadvertent dropping of a core barrel assembly during retrieval of a core sample can include a cup adapted to fit over an overshot and a brace adapted to be coupled to a core barrel assembly. A cable can connect the cup and brace and prevent the core barrel from falling if the overshot latch mechanism holding the core barrel assembly and overshot together fails.

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