Title:
DUPLEX TYPE PLUNGER PUMP
Document Type and Number:
Japanese Patent JPH04287875
Kind Code:
A
Abstract:
PURPOSE: To change the liquid feed quantity of a duplex type plunger pump for actuating a pair of plungers alternately.
CONSTITUTION: A pair of small stroke cams 21a, 21b for actuating a pair of plungers 12a, 12b respectively are fixed facing symmetrically to one driving shaft 20, and a pair of large stroke cams 22a, 22b for actuating these plungers 12a, 12b are rotatably supported on the driving shaft 20. A one-way clutch 25 for transmitting only one-way rotation of the driving shaft 20 is further interposed between the driving shaft 20 and the large stroke cams 22a, 22b.
Inventors:
SANUKI SANNOSUKE
Application Number:
JP7582891A
Publication Date:
October 13, 1992
Filing Date:
March 15, 1991
Export Citation:
Assignee:
SANUKI KOGYO KK
International Classes:
F04B11/00; F04B13/00; F04B9/04; (IPC1-7): F04B9/04; F04B13/00
Attorney, Agent or Firm:
Masao Tanaka