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Title:
GEAR PUMP
Document Type and Number:
Japanese Patent JPS62186081
Kind Code:
A
Abstract:

PURPOSE: To improve the measuring performance by employing such components as having the surface hardness higher than 700 in a gear pump and confining the top, side and axial clearances within specific range.

CONSTITUTION: At least a part of the components of a gear pump has the surface hardness higher than 700. Furthermore, the top clearance 12, the side clearance 13 and the axial clearance 14 are confined respectively in the ranges of 100W500μ, 75W300μ and 50W200μ. Consequently, excellent measuring performance is provided and even such liquid as having low lubricity never cause the burning.


Inventors:
TAKEDA MASASHI
FURUKO MAMORU
TANIGUCHI KIROKU
Application Number:
JP2573886A
Publication Date:
August 14, 1987
Filing Date:
February 10, 1986
Export Citation:
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Assignee:
TORAY INDUSTRIES
International Classes:
F04C2/12; F04C2/14; F04C2/18; F04C13/00; (IPC1-7): F04C2/14; F04C13/00
Domestic Patent References:
JPS54179505U1979-12-19
JP31001043A
JPS6085284A1985-05-14
JPS52109605A1977-09-14
JPS5465806A1979-05-26



 
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