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Patent Searching and Data


Title:
HAND PUMP
Document Type and Number:
Japanese Patent JPS5264003
Kind Code:
A
Abstract:

PURPOSE: A piston is fitted to the lower end of a piston rod, being pressed downward by means of a spring and the control efficiency of a driven valve is improved by automatically changing the discharge according to load.


Inventors:
HASEGAWA AKIRA
Application Number:
JP1975000140885
Publication Date:
May 27, 1977
Filing Date:
November 25, 1975
Export Citation:
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Assignee:
JAPAN STEEL WORKS LTD
International Classes:
F04B9/14; (IPC1-7): F04B9/14
Domestic Patent References:
JPS4024593Y1
JPS451785Y11970-01-26