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Patent Searching and Data


Title:
PLUNGER PUMP
Document Type and Number:
Japanese Patent JPH01167469
Kind Code:
A
Abstract:

PURPOSE: To eliminate suction valve and to shorten the axial length of pump by forming a suction path opening to a working chamber in a cylinder and arranging a delivery valve at the bottom of the cylinder.

CONSTITUTION: A suction path 12 communicated with a conduit 11 is formed in the drum section 10 of a cylinder 3. The suction path 12 is opened to a working chamber 9 in the vicinity of bottom dead center of a plunger 6 thus communicating the conduit 11 with the working chamber 9 and leading brake liquid into the working chamber 9. A delivery hole 13 for communicating the working chamber 9 with the outside of the cylinder 3 is made through the bottom 8 of the cylinder 3. When the liquid pressure in the cylinder 3 exceeds over a predetermined level, the delivery valve 15 opens to communicate the working chamber 9 with an accumulator through a delivery chamber 16 and a conduit 17.


Inventors:
KURABA KATSUMI
Application Number:
JP1987000326050
Publication Date:
July 03, 1989
Filing Date:
December 23, 1987
Export Citation:
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Assignee:
ATSUGI MOTOR PARTS CO LTD
International Classes:
F04B1/04; F04B1/047; F04B1/053; (IPC1-7): F04B1/04
Attorney, Agent or Firm:
西川 惠清 (外1名)