Title:
CONCRETE PUMP
Document Type and Number:
Japanese Patent JP2988299
Kind Code:
B2
Abstract:
PURPOSE: To reduce pulsation without bringing about cost-up or dropping the efficiency.
CONSTITUTION: A hopper 1 is equipped with a pair of concrete cylinders 2L, 2R which are furnished with suction/discharge ports 3L, 3R, and a swing valve 31 having an opening formed in a size as capable of enclosing the ports simultaneously is supported swingably. When the connection of the swing valve 31 with the concrete cylinders 2L, 2R is to be switched, the cylinders 2L, 2R are put in the discharge stroke, wherefrom ready mixed-concrete is fed to the swing valve 31 which is swung and enclose the suction/discharge ports 3L, 3R.
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| WO/1998/011344 | PULSELESS, REVERSIBLE PRECISION PISTON-ARRAY PUMP |
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Inventors:
MATOBA MASATOSHI
SENDA SHINTARO
SENDA SHINTARO
Application Number:
JP449995A
Publication Date:
December 13, 1999
Filing Date:
January 13, 1995
Export Citation:
Assignee:
NIIGATA TETSUKOSHO KK
International Classes:
F04B11/00; F04B15/02; (IPC1-7): F04B15/02
Domestic Patent References:
| JP62147054A | ||||
| JP57135276A | ||||
| JP5845969U |
Attorney, Agent or Firm:
Masatake Shiga (1 person outside)
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