Piston pump

Details Piston pump Piston pump

2002-09-04

2004-06-15

Koczo, Michael (Department: 3746)

Pumps

Motor driven

Electric or magnetic motor

C417S534000, C092S136000

Reexamination Certificate

active

06749408

ABSTRACT:

BACKGROUND OF THE INVENTION
1. Field of the Invention
The present invention relates to a piston pump as disclosed in the preamble of claim
1
.
2. Description of the Related Art
The invention has been especially developed as a drilling fluid pump. The standard drilling fluid pumps are connecting rod operated piston pumps. These are relatively heavy structures, and their service life is also comparatively short.
Therefore there is a need for a new type of drilling fluid pump that is lighter in weight and has a longer service life.
SUMMARY OF THE INVENTION
This need is met by means of a piston pump as disclosed in claim
1
.


REFERENCES:
patent: 545032 (1895-08-01), Wood
patent: 2027877 (1936-01-01), Pescara
patent: 2734353 (1956-02-01), Hill
patent: 3444784 (1969-05-01), Wengerd
patent: 3501088 (1970-03-01), Braun
patent: 98/36192 (1998-08-01), None
Derwent's Abstract, No. 94-331434*41, week 9441, Abstract of SU 1820028-A1 (Potapov N P), Jun. 7, 1993.

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