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:
JP14088575A
Publication Date:
May 27, 1977
Filing Date:
November 25, 1975
Export Citation:
Assignee:
JAPAN STEEL WORKS LTD
International Classes:
F04B9/14; (IPC1-7): F04B9/14
Domestic Patent References:
| JPS4024593Y1 | ||||
| JPS451785Y1 | 1970-01-26 |