THE UNITED STATES OF AMERICAS AS REPRESENTED BY THE UNITED STATES DEPARTMENT OF ENERGY
发明人:
JORGENSEN, DOUGLAS K.,KUHNS, DOUGLASS J.,WIERSHOLM, OTTO,MILLER, TIMOTHY A.
申请号：
US19920868143
公开号：
US5191156(A)
申请日:
1992.04.14
申请国别(地区):
美国
年份:
1993
代理人:
摘要：
The drill string enclosure consists of six component parts, including; a top bracket, an upper acrylic cylinder, an acrylic drill casing guide, a lower acrylic cylinder, a bottom bracket, and three flexible ducts. The upper acrylic cylinder is optional based upon the drill string length. The drill string enclosure allows for an efficient drill and sight operation at a hazardous waste site.
