Title:
SUCTION PUMP
Document Type and Number:
WIPO Patent Application WO/2007/010912
Kind Code:
A1
Abstract:
A suction pump capable of pumping up a liquid to a high position even if used manually
by increasing a pump discharge efficiency for pumping up the liquid. The suction
pump (10) comprises a hollow outer tube (20) having a suction port (23) and a discharge
port (24) and a hollow reciprocating rod (30) reciprocatingly inserted into
the outer tube. A clearance for passing water therein is formed between the inner
surface of the outer tube and the outer surface of the reciprocating rod. Where
the inner diameter of the outer tube (20) is D and the outer diameter of the reciprocating
rod (30) is d, the suction pump is set to fulfill the requirement of 0.95D ≥
d ≥ 0.3D. Furthermore, the reciprocating rod (30) of the suction pump
(10) is set to have a specific gravity as small as within the range of 0.9 to 0.3 so
that a buoyancy can be added to the reciprocating rod (30) by the liquid flowing
into the clearance for passing water therein.
Inventors:
YAMADA MASAO (JP)
Application Number:
PCT/JP2006/314219
Publication Date:
January 25, 2007
Filing Date:
July 19, 2006
Export Citation:
Assignee:
YUGEN KAISHA ASAHIKOUMUTEN (JP)
MIYAIRI KENICHIRO (JP)
YAMADA MASAO (JP)
MIYAIRI KENICHIRO (JP)
YAMADA MASAO (JP)
International Classes:
F04B9/14; F04B47/00; F04B53/12
Foreign References:
| JP3457301B2 | 2003-10-14 | |||
| JP2005155343A | 2005-06-16 | |||
| JP3400654B2 | 2003-04-28 | |||
| JPH04224280A | 1992-08-13 | |||
| JPS4215007Y1 | 1967-08-28 | |||
| JPH11504408A | 1999-04-20 |
Attorney, Agent or Firm:
KOBAYASHI, Tsunenori (Oaza Nakano Nakano-sh, Nagano 13, JP)
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