Patent · US Expired

Suction and discharge apparatus for drilling fluid

US6126822A · kind A · utility

4Cited by

8References

7Claims

0Family size

Assignee

Hilti Aktiengesellschaft · LI

Inventors

Peter Ostermeier · Dießen, DE
Wolfgang Erdt · Martinsried, DE
Peter Roth · Grabs, CH

Key dates

Filing date	Mar 10, 1999
Grant date	Oct 3, 2000
Priority date	—
Expiry date	Mar 10, 2019

Classification

Technology area (CPC B)Performing Operations; Transporting
CPC primaryB28D7/02
WIPO fieldOther special machines
WIPO sectorMechanical engineering

Abstract

The present invention relates to a suction and discharge apparatus for a drilling fluid, which is used in material removing treatment of hard constructional components formed of concrete, stone, break work, and the like, and including at least two air- and liquid-tight reservoirs (1,2), with the first reservoir being connected with a vacuum-producing device (6) and a suction conduit (3), with the second reservoir (2) being connected with an overpressure-producing device (4) and a discharge conduit (4), and with both reservoirs (1, 2) being connected by a conduit (5).

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